• rtm匹 转


    转化的

    rtspjni的后要弄上

    1218 ok

    #define TAG "zj"
    
    #define LOGV(...) __android_log_print(ANDROID_LOG_VERBOSE, TAG, __VA_ARGS__)
    #define LOGD(...) __android_log_print(ANDROID_LOG_DEBUG, TAG, __VA_ARGS__)
    #define LOGI(...) __android_log_print(ANDROID_LOG_INFO, TAG, __VA_ARGS__)
    #define LOGW(...) __android_log_print(ANDROID_LOG_WARN, TAG, __VA_ARGS__)
    #define LOGE(...) __android_log_print(ANDROID_LOG_ERROR, TAG, __VA_ARGS__)
    
    
    
    #define   GBUFF_MAX_SIZE 10*1024 * 1024
    #define   ONE_READ_SIZE 1024*1024
    
    char gbuf[GBUFF_MAX_SIZE] = { 0 };
    int  gbufDatasize = 0;
    int  gBytesRead = 0;
    
    int TestRtmpPublisher(xop::EventLoop *event_loop);
    char * sdPath = "data/data/com.example.testrtsp/1218.h264";
    
    void WriteGbufToFile(){
        FILE *m_file = NULL;
        m_file = fopen(sdPath, "wb");
        if (m_file == NULL)
        {
            LOGE("Open %s error %d!",sdPath,errno);
            return ;
        }    
        int ret = fwrite(gbuf,gbufDatasize,1,m_file);
        LOGE("ret %d --->!",ret);
          fclose(m_file);
        return;
    
    }
    
    
    int rtmpMain()
    {
        LOGE("rtmpMain---->");
    
        //WriteGbufToFile();
        //return 0;
    
        int count = 1; 
    #if TEST_MULTI_THREAD
        count = std::thread::hardware_concurrency();
    #endif
        xop::EventLoop event_loop(count);
    
        /* rtmp server example */
        auto rtmp_server = xop::RtmpServer::Create(&event_loop);
        rtmp_server->SetChunkSize(60000);
        //rtmp_server->SetGopCache(); /* enable gop cache */
        rtmp_server->SetEventCallback([](std::string type, std::string stream_path) {
            LOGE("[Event] %s, stream path: %s\n\n", type.c_str(), stream_path.c_str());
        });
        if (!rtmp_server->Start("0.0.0.0", 1935)) {
            LOGE("RTMP Server listen on 1935 failed.\n");
        }
    
        /* http-flv server example */
        /*
        xop::HttpFlvServer http_flv_server; 
        http_flv_server.Attach(rtmp_server);
        if (!http_flv_server.Start("0.0.0.0", 8080)) {
            printf("HTTP FLV Server listen on 8080 failed.\n");
        }*/
    
    #if TEST_RTMP_PUSHER
        /* rtmp pusher example */
        std::thread t([&event_loop] () {
            TestRtmpPublisher(&event_loop);
        });
        t.detach();
    #endif 
    /*
    #if    TEST_RTMP_CLIENT
        auto rtmp_client = xop::RtmpClient::Create(&event_loop);
        rtmp_client->SetFrameCB([](uint8_t* payload, uint32_t length, uint8_t codecId, uint32_t timestamp) {
            printf("recv frame, type:%u, size:%u,\n", codecId, length);
        });
    
        std::string status;
        if (rtmp_client->OpenUrl(RTMP_URL, 3000, status) != 0) {
            printf("Open url %s failed, status: %s\n", RTMP_URL, status.c_str());
        }
    #endif
    */
    
        while (1) {
            std::this_thread::sleep_for(std::chrono::milliseconds(100));
        }
        
        rtmp_server->Stop();
        //http_flv_server.Stop();
        return 0;
    }
    
    
    class H264File
    {
    public:
        H264File(int bufSize = 5000000);
        ~H264File();
    
        bool open(const char *path);
        void Close();
    
        bool isOpened() const
        {
            return (m_file != NULL);
        }
    
        int readFrame(char *inBuf, int inBufSize, bool *bEndOfFrame);
        int readFrameFromGbuf(char* inBuf, int inBufSize, bool* bEndOfFrame);
        int readfileToGBbuf();
    private:
        FILE *m_file = NULL;
        char *m_buf = NULL;
        int m_bufSize = 0;
        int m_bytesUsed = 0;
        int m_count = 0;
    };
    
    H264File::H264File(int bufSize)
        : m_bufSize(bufSize)
    {
        m_buf = new char[m_bufSize];
    }
    
    H264File::~H264File()
    {
        delete m_buf;
    }
    
    bool H264File::open(const char *path)
    {
        m_file = fopen(path, "rb");
        if (m_file == NULL)
        {
            return false;
        }
    
        return true;
    }
    
    void H264File::Close()
    {
        if (m_file)
        {
            fclose(m_file);
            m_file = NULL;
            m_count = 0;
            m_bytesUsed = 0;
        }
    }
    
    /*
    int H264File::readfileToGBbuf() {
        fseek(m_file, 0, SEEK_SET);
        //fseek(m_file, 31, SEEK_SET);
        int bytesRead = (int)fread(gbuf, 1, GBUFF_MAX_SIZE, m_file);
        gbufDatasize = bytesRead;
        fclose(m_file);
        printf("readfileToGBbuf ----->\n");
        return 0;
    }*/
    
     int   pushOneFrame(char* inBuf, int inBufSize){
         if(gbufDatasize+inBufSize > 5*1024*1024) {
             LOGE("pushOneFrame out---- %d--->\n",gbufDatasize);
             return -1;
         }
          memcpy(gbuf+ gbufDatasize, inBuf, inBufSize);
          gbufDatasize += inBufSize;
          return 1;
     }
    
    int H264File::readFrameFromGbuf(char* inBuf, int inBufSize, bool* bEndOfFrame) {
        /*
        if (m_file == NULL)
        {
            return -1;
        }    
        */
        LOGE("readFrameFromGbuf %d",inBufSize);
        int tmpOneStepRead = ONE_READ_SIZE;
        if (gBytesRead >= gbufDatasize) gBytesRead = 0;
        if (gbufDatasize - gBytesRead < ONE_READ_SIZE)
            tmpOneStepRead = gbufDatasize - gBytesRead;
    
        memcpy(m_buf, gbuf+ gBytesRead, tmpOneStepRead);
        /*
        int bytesRead = (int)fread(m_buf, 1, m_bufSize, m_file);
        if (bytesRead == 0)
        {
            fseek(m_file, 0, SEEK_SET);
            m_count = 0;
            m_bytesUsed = 0;
            bytesRead = (int)fread(m_buf, 1, m_bufSize, m_file);
            if (bytesRead == 0)
            {
                this->Close();
                return -1;
            }
        }*/
        int bytesRead = tmpOneStepRead;
        bool bFindStart = false, bFindEnd = false;
    
        int i = 0, startCode = 3;
        *bEndOfFrame = false;
        for (i = 0; i < bytesRead - 5; i++)
        {
            if (m_buf[i] == 0 && m_buf[i + 1] == 0 && m_buf[i + 2] == 1)
            {
                startCode = 3;
            }
            else if (m_buf[i] == 0 && m_buf[i + 1] == 0 && m_buf[i + 2] == 0 && m_buf[i + 3] == 1)
            {
                startCode = 4;
            }
            else
            {
                continue;
            }
    
            if (((m_buf[i + startCode] & 0x1F) == 0x5 || (m_buf[i + startCode] & 0x1F) == 0x1) &&
                ((m_buf[i + startCode + 1] & 0x80) == 0x80))
            {
                bFindStart = true;
                i += 4;
                break;
            }
        }
    
        for (; i < bytesRead - 5; i++)
        {
            if (m_buf[i] == 0 && m_buf[i + 1] == 0 && m_buf[i + 2] == 1)
            {
                startCode = 3;
            }
            else if (m_buf[i] == 0 && m_buf[i + 1] == 0 && m_buf[i + 2] == 0 && m_buf[i + 3] == 1)
            {
                startCode = 4;
            }
            else
            {
                continue;
            }
    
            if (((m_buf[i + startCode] & 0x1F) == 0x7) || ((m_buf[i + startCode] & 0x1F) == 0x8)
                || ((m_buf[i + startCode] & 0x1F) == 0x6) || (((m_buf[i + startCode] & 0x1F) == 0x5
                    || (m_buf[i + startCode] & 0x1F) == 0x1) && ((m_buf[i + startCode + 1] & 0x80) == 0x80)))
            {
                bFindEnd = true;
                break;
            }
        }
    
        bool flag = false;
        if (bFindStart && !bFindEnd && m_count > 0)
        {
            flag = bFindEnd = true;
            i = bytesRead;
            *bEndOfFrame = true;
        }
    
        if (!bFindStart || !bFindEnd)
        {
            this->Close();
            return -1;
        }
    
        int size = (i <= inBufSize ? i : inBufSize);
        memcpy(inBuf, m_buf, size);
    
        if (!flag)
        {
            m_count += 1;
            m_bytesUsed += i;
        }
        else
        {
            m_count = 0;
            m_bytesUsed = 0;
        }
    
        //fseek(m_file, m_bytesUsed, SEEK_SET);
        gBytesRead = m_bytesUsed;
        return size;
    }
    
    
    
    int TestRtmpPublisher(xop::EventLoop *event_loop)
    {
        H264File h264_file;
        /*
        if (!h264_file.open(PUSH_FILE)) {
            LOGE("Open %s failed.\n", PUSH_FILE);
            return -1;
        }
        */
        /* push stream to local rtmp server */
        xop::MediaInfo media_info;
        auto publisher = xop::RtmpPublisher::Create(event_loop);
        publisher->SetChunkSize(60000);
    
        std::string status;
        if (publisher->OpenUrl(RTMP_URL, 3000, status) < 0) {
            LOGE("Open url %s failed, status: %s\n", RTMP_URL, status.c_str());
            return -1;
        }
    
        int buf_size = 500000;
        bool end_of_frame = false;
        bool has_sps_pps = false;
        uint8_t *frame_buf = new uint8_t[buf_size];
        //h264_file.readfileToGBbuf();
    
    
        while (publisher->IsConnected()) 
        {
            //int frameSize = h264_file.readFrame((char*)frame_buf, buf_size, &end_of_frame);
            int frameSize = h264_file.readFrameFromGbuf((char*)frame_buf, buf_size, &end_of_frame);
            if (frameSize > 0) {
                if (!has_sps_pps) {
                    if (frame_buf[3] == 0x67 || frame_buf[4] == 0x67) {
                        xop::Nal sps = xop::H264Parser::findNal(frame_buf, frameSize);
                        if (sps.first != nullptr && sps.second != nullptr && *sps.first == 0x67) {
                            media_info.sps_size = (uint32_t)(sps.second - sps.first + 1);
                            media_info.sps.reset(new uint8_t[media_info.sps_size], std::default_delete<uint8_t[]>());
                            memcpy(media_info.sps.get(), sps.first, media_info.sps_size);
    
                            xop::Nal pps = xop::H264Parser::findNal(sps.second, frameSize - (int)(sps.second - frame_buf));
                            if (pps.first != nullptr && pps.second != nullptr && *pps.first == 0x68) {
                                media_info.pps_size = (uint32_t)(pps.second - pps.first + 1);
                                media_info.pps.reset(new uint8_t[media_info.pps_size], std::default_delete<uint8_t[]>());
                                memcpy(media_info.pps.get(), pps.first, media_info.pps_size);
    
                                has_sps_pps = true;
                                publisher->SetMediaInfo(media_info); /* set sps pps */                            
                                LOGE("Start rtmp pusher, rtmp url: %s , http-flv url: %s \n\n", RTMP_URL, HTTP_URL);
                            }
                        }
                    }
                }
                
                if (has_sps_pps) {
                    publisher->PushVideoFrame(frame_buf, frameSize); /* send h.264 frame */
                }
            }
    
            std::this_thread::sleep_for(std::chrono::milliseconds(40));
        }
        
        delete frame_buf;
        return 0;
    }
     

    做成jni易于调用的

    std::shared_ptr<xop::RtmpPublisher> publisher;
    xop::MediaInfo media_info;
    bool has_sps_pps = false;
    int InitPub() {
        if (NULL == g_event_loop) return -1;
        printf("[%s %s] %s: %s: %d\n", __DATE__, __TIME__, __FILE__, __func__, __LINE__);
        H264File h264_file;
        if (!h264_file.open(PUSH_FILE)) {
            printf("Open %s failed.\n", PUSH_FILE);
            return -1;
        }
    
        /* push stream to local rtmp server */
        xop::MediaInfo media_info;
        //auto publisher 
        publisher    = xop::RtmpPublisher::Create(g_event_loop);
        publisher->SetChunkSize(60000);
    
        std::string status;
        if (publisher->OpenUrl(RTMP_URL, 3000, status) < 0) {
            printf("Open url %s failed, status: %s\n", RTMP_URL, status.c_str());
            return -1;
        }
    
        return 0;
    }
    
    void  procFrame(char* inBuf, int inBufSize, bool* bEndOfFrame) {
    
        //int buf_size = 500000;
        //uint8_t* frame_buf = new uint8_t[buf_size];
    
        uint8_t* frame_buf = (uint8_t*)inBuf;
    
        bool end_of_frame = *bEndOfFrame;
        
        if (!publisher->IsConnected()) {
            printf("return\n");
            return;
        }
        //printf("[%s %s] %s: %s: %d\n", __DATE__, __TIME__, __FILE__, __func__, __LINE__);
        int frameSize = inBufSize;//h264_file.readFrame((char*)frame_buf, buf_size, &end_of_frame);
        if (frameSize > 0) {
            if (!has_sps_pps) {
                if (frame_buf[3] == 0x67 || frame_buf[4] == 0x67) {
                    xop::Nal sps = xop::H264Parser::findNal(frame_buf, frameSize);
                    if (sps.first != nullptr && sps.second != nullptr && *sps.first == 0x67) {
                        media_info.sps_size = (uint32_t)(sps.second - sps.first + 1);
                        media_info.sps.reset(new uint8_t[media_info.sps_size], std::default_delete<uint8_t[]>());
                        memcpy(media_info.sps.get(), sps.first, media_info.sps_size);
    
                        xop::Nal pps = xop::H264Parser::findNal(sps.second, frameSize - (int)(sps.second - frame_buf));
                        if (pps.first != nullptr && pps.second != nullptr && *pps.first == 0x68) {
                            media_info.pps_size = (uint32_t)(pps.second - pps.first + 1);
                            media_info.pps.reset(new uint8_t[media_info.pps_size], std::default_delete<uint8_t[]>());
                            memcpy(media_info.pps.get(), pps.first, media_info.pps_size);
    
                            has_sps_pps = true;
                            publisher->SetMediaInfo(media_info); /* set sps pps */
                            //printf("Start rtmp pusher, rtmp url: %s , http-flv url: %s \n\n", RTMP_URL, HTTP_URL);
                            printf("Start rtmp pusher, rtmp url: %s  \n\n", RTMP_URL);
                        }
                    }
                }
            }
    
            if (has_sps_pps) {
                publisher->PushVideoFrame(frame_buf, frameSize); /* send h.264 frame */
            }
        }
        else {
            printf("[%s %s] %s: %s: %d\n", __DATE__, __TIME__, __FILE__, __func__, __LINE__);
            printf("push end!");
            //break;
        }
    
        std::this_thread::sleep_for(std::chrono::milliseconds(40));
    }
    
    
    void TestMyRtmpPublisher() {
        int ret = InitPub();
        if (ret < 0) return;    
        int buf_size = 500000;
        bool end_of_frame = false;
        bool has_sps_pps = false;
        uint8_t* frame_buf = new uint8_t[buf_size];
        H264File h264_file;
        if (!h264_file.open(PUSH_FILE)) {
            printf("Open %s failed.\n", PUSH_FILE);
            return ;
        }
    
    
        while (1) {
            //printf("[%s %s] %s: %s: %d\n", __DATE__, __TIME__, __FILE__, __func__, __LINE__);
            int frameSize = h264_file.readFrame((char*)frame_buf, buf_size, &end_of_frame);
    
            procFrame((char*)frame_buf, frameSize, &end_of_frame);
        }
        
    }
    #define  GBUFF_SIZE 10*1024 * 1024
    #define  ONEREAD_MAXSIZE 1024*1024
    char gbuf[GBUFF_SIZE] = { 0 };
    int  gbufDatasize = 0;
    int  gBytesRead = 0;
    int H264File::readfileToGBbuf() {
        fseek(m_file, 0, SEEK_SET);
        //fseek(m_file, 31, SEEK_SET);
        int bytesRead = (int)fread(gbuf, 1, GBUFF_SIZE, m_file);
        gbufDatasize = bytesRead;
        fclose(m_file);
        return 0;
    }
    
    int H264File::readFrameFromGbuf(char* inBuf, int inBufSize, bool* bEndOfFrame) {
    
        if (gBytesRead >= gbufDatasize) {
            gBytesRead = 0;
        }
    
        int oneReadSize = ONEREAD_MAXSIZE;
        if (gbufDatasize - gBytesRead - ONEREAD_MAXSIZE < 0&& gbufDatasize - gBytesRead - ONEREAD_MAXSIZE>0)
            oneReadSize = gbufDatasize - gBytesRead;
         
        //int bytesRead = (int)fread(m_buf, 1, m_bufSize, m_file);
    
        memcpy(m_buf,gbuf, oneReadSize);
        int bytesRead = oneReadSize;
        /*
        if (bytesRead == 0)
        {
            //--
            printf("[%s %s] %s: %s: %d\n", __DATE__, __TIME__, __FILE__, __func__, __LINE__);
            //return -2;
            //--
    
            fseek(m_file, 0, SEEK_SET);
            //fseek(m_file, 31, SEEK_SET);
            m_count = 0;
            m_bytesUsed = 0;
            bytesRead = (int)fread(m_buf, 1, m_bufSize, m_file);
            if (bytesRead == 0)
            {
                this->Close();
                return -1;
            }
        }
    */
        bool bFindStart = false, bFindEnd = false;
    
        int i = 0, startCode = 3;
        *bEndOfFrame = false;
        for (i = 0; i < bytesRead - 5; i++)
        {
            if (m_buf[i] == 0 && m_buf[i + 1] == 0 && m_buf[i + 2] == 1)
            {
                startCode = 3;
            }
            else if (m_buf[i] == 0 && m_buf[i + 1] == 0 && m_buf[i + 2] == 0 && m_buf[i + 3] == 1)
            {
                startCode = 4;
            }
            else
            {
                continue;
            }
    
            if (((m_buf[i + startCode] & 0x1F) == 0x5 || (m_buf[i + startCode] & 0x1F) == 0x1) &&
                ((m_buf[i + startCode + 1] & 0x80) == 0x80))
            {
                bFindStart = true;
                i += 4;
                break;
            }
        }
    
        for (; i < bytesRead - 5; i++)
        {
            if (m_buf[i] == 0 && m_buf[i + 1] == 0 && m_buf[i + 2] == 1)
            {
                startCode = 3;
            }
            else if (m_buf[i] == 0 && m_buf[i + 1] == 0 && m_buf[i + 2] == 0 && m_buf[i + 3] == 1)
            {
                startCode = 4;
            }
            else
            {
                continue;
            }
    
            if (((m_buf[i + startCode] & 0x1F) == 0x7) || ((m_buf[i + startCode] & 0x1F) == 0x8)
                || ((m_buf[i + startCode] & 0x1F) == 0x6) || (((m_buf[i + startCode] & 0x1F) == 0x5
                    || (m_buf[i + startCode] & 0x1F) == 0x1) && ((m_buf[i + startCode + 1] & 0x80) == 0x80)))
            {
                bFindEnd = true;
                break;
            }
        }
    
        bool flag = false;
        if (bFindStart && !bFindEnd && m_count > 0)
        {
            flag = bFindEnd = true;
            i = bytesRead;
            *bEndOfFrame = true;
        }
    
        if (!bFindStart || !bFindEnd)
        {
            //this->Close();
            return -1;
        }
    
        int size = (i <= inBufSize ? i : inBufSize);
        memcpy(inBuf, m_buf, size);
    
        if (!flag)
        {
            m_count += 1;
            m_bytesUsed += i;
            gBytesRead += i;
        }
        else
        {
            m_count = 0;
            m_bytesUsed = 0;
            gBytesRead = 0;
        }
    
        //fseek(m_file, m_bytesUsed, SEEK_SET);
        return size;
    
    
    }
    
    
    std::shared_ptr<xop::RtmpPublisher> publisher;
    xop::MediaInfo media_info;
    bool has_sps_pps = false;
    int InitPub() {
        if (NULL == g_event_loop) return -1;
        printf("[%s %s] %s: %s: %d\n", __DATE__, __TIME__, __FILE__, __func__, __LINE__);
        H264File h264_file;
        if (!h264_file.open(PUSH_FILE)) {
            printf("Open %s failed.\n", PUSH_FILE);
            return -1;
        }
    
        /* push stream to local rtmp server */
        xop::MediaInfo media_info;
        //auto publisher 
        publisher    = xop::RtmpPublisher::Create(g_event_loop);
        publisher->SetChunkSize(60000);
    
        std::string status;
        if (publisher->OpenUrl(RTMP_URL, 3000, status) < 0) {
            printf("Open url %s failed, status: %s\n", RTMP_URL, status.c_str());
            return -1;
        }
    
        return 0;
    }
    
    void  procFrame(char* inBuf, int inBufSize, bool* bEndOfFrame) {
    
        //int buf_size = 500000;
        //uint8_t* frame_buf = new uint8_t[buf_size];
    
        uint8_t* frame_buf = (uint8_t*)inBuf;
    
        bool end_of_frame = *bEndOfFrame;
        
        if (!publisher->IsConnected()) {
            printf("return\n");
            return;
        }
        //printf("[%s %s] %s: %s: %d\n", __DATE__, __TIME__, __FILE__, __func__, __LINE__);
        int frameSize = inBufSize;//h264_file.readFrame((char*)frame_buf, buf_size, &end_of_frame);
        if (frameSize > 0) {
            if (!has_sps_pps) {
                if (frame_buf[3] == 0x67 || frame_buf[4] == 0x67) {
                    xop::Nal sps = xop::H264Parser::findNal(frame_buf, frameSize);
                    if (sps.first != nullptr && sps.second != nullptr && *sps.first == 0x67) {
                        media_info.sps_size = (uint32_t)(sps.second - sps.first + 1);
                        media_info.sps.reset(new uint8_t[media_info.sps_size], std::default_delete<uint8_t[]>());
                        memcpy(media_info.sps.get(), sps.first, media_info.sps_size);
    
                        xop::Nal pps = xop::H264Parser::findNal(sps.second, frameSize - (int)(sps.second - frame_buf));
                        if (pps.first != nullptr && pps.second != nullptr && *pps.first == 0x68) {
                            media_info.pps_size = (uint32_t)(pps.second - pps.first + 1);
                            media_info.pps.reset(new uint8_t[media_info.pps_size], std::default_delete<uint8_t[]>());
                            memcpy(media_info.pps.get(), pps.first, media_info.pps_size);
    
                            has_sps_pps = true;
                            publisher->SetMediaInfo(media_info); /* set sps pps */
                            //printf("Start rtmp pusher, rtmp url: %s , http-flv url: %s \n\n", RTMP_URL, HTTP_URL);
                            printf("Start rtmp pusher, rtmp url: %s  \n\n", RTMP_URL);
                        }
                    }
                }
            }
    
            if (has_sps_pps) {
                publisher->PushVideoFrame(frame_buf, frameSize); /* send h.264 frame */
            }
        }
        else {
            printf("[%s %s] %s: %s: %d\n", __DATE__, __TIME__, __FILE__, __func__, __LINE__);
            printf("push end!");
            //break;
        }
    
        std::this_thread::sleep_for(std::chrono::milliseconds(40));
    }
    
    
    void TestMyRtmpPublisher() {
        int ret = InitPub();
        if (ret < 0) return;    
        int buf_size = 500000;
        bool end_of_frame = false;
        bool has_sps_pps = false;
        uint8_t* frame_buf = new uint8_t[buf_size];
        H264File h264_file;
        if (!h264_file.open(PUSH_FILE)) {
            printf("Open %s failed.\n", PUSH_FILE);
            return ;
        }
        h264_file.readfileToGBbuf();
        
        while (1) {
            //printf("[%s %s] %s: %s: %d\n", __DATE__, __TIME__, __FILE__, __func__, __LINE__);
            int frameSize = h264_file.readFrameFromGbuf((char*)frame_buf, buf_size, &end_of_frame);
            //int frameSize = h264_file.readOneFrameFile((char*)frame_buf, buf_size, &end_of_frame);
            
            procFrame((char*)frame_buf, frameSize, &end_of_frame);
    
            gi++ ;
        }
        
    }
  • 相关阅读:
    梯度下降算法 (转)
    机器学习
    杭电1097-A hard puzzle
    动态规划初步习题(紫书)
    4.21考试题解
    【bzoj4445 scoi2015】小凸想跑步
    【bzoj4444 scoi2015】国旗计划
    【bzoj4443 scoi2015】小凸玩矩阵
    【luogu P4007 清华集训2017】小Y和恐怖奴隶主
    【luoguP4006 清华集训2017】小Y和二叉树
  • 原文地址:https://www.cnblogs.com/cnchengv/p/15699860.html
Copyright © 2020-2023  润新知