2020牛客多校 第八场 G

思路：

预处理所有牌，对已有的牌标记。枚举可以组成一组的两张牌（此时第三张牌已被固定），判断手上是否有第三张牌

Code:

#pragma GCC optimize(3)
#pragma GCC optimize(2)
#include <map>
#include <set>
// #include <array>
#include <queue>
#include <stack>
#include <vector>
#include <cstdio>
#include <cstring>
#include <sstream>
#include <iostream>
#include <stdlib.h>
#include <algorithm>
// #include <unordered_map>

using namespace std;

typedef long long ll;
typedef pair<int, int> PII;

#define Time (double)clock() / CLOCKS_PER_SEC

#define sd(a) scanf("%d", &a)
#define sdd(a, b) scanf("%d%d", &a, &b)
#define slld(a) scanf("%lld", &a)
#define slldd(a, b) scanf("%lld%lld", &a, &b)

const int N = 300 + 20;
const int M = 1e6 + 20;
const int mod = 1e9 + 7;

struct node
{
    int a, b, c, d;
} s[N];

int n;
char t[N], p[10];
map<int, int> mp;

void save(int j)
{
    int i = 0, cnt = 0;
    int m = strlen(t);
    while (t[i] != ']')
    {
        if (t[i] == '[')
        {
            i++;
            continue;
        }
        p[cnt++] = t[i];
        i++;
    }
    // p[cnt] = '';
    // cout << p << endl;
    if (p[0] == 'o')
        s[j].a = 1;
    else if (p[0] == 't' && p[1] == 'w')
        s[j].a = 2;
    else if (p[0] == '*')
        s[j].a = 4;
    else
        s[j].a = 3;

    i++;
    cnt = 0;
    while (t[i] != ']')
    {
        if (t[i] == '[')
        {
            i++;
            continue;
        }
        p[cnt++] = t[i];
        i++;
    }
    // p[cnt] = '';
    // cout << p << endl;
    if (p[0] == 'd')
        s[j].b = 1;
    else if (p[0] == 's')
        s[j].b = 2;
    else if (p[0] == '*')
        s[j].b = 4;
    else
        s[j].b = 3;

    i++;
    cnt = 0;
    while (t[i] != ']')
    {
        if (t[i] == '[')
        {
            i++;
            continue;
        }
        p[cnt++] = t[i];
        i++;
    }
    // p[cnt] = '';
    // cout << p << endl;
    if (p[0] == 's' && p[1] == 'o')
        s[j].c = 1;
    else if (p[0] == 's' && p[1] == 't')
        s[j].c = 2;
    else if (p[0] == '*')
        s[j].c = 4;
    else
        s[j].c = 3;
    i++;
    cnt = 0;
    while (t[i] != ']')
    {
        if (t[i] == '[')
        {
            i++;
            continue;
        }
        p[cnt++] = t[i];
        i++;
    }
    // p[cnt] = '';
    // cout << p << endl;
    if (p[0] == 'r')
        s[j].d = 1;
    else if (p[0] == 'g')
        s[j].d = 2;
    else if (p[0] == '*')
        s[j].d = 4;
    else
        s[j].d = 3;
}

void solve()
{
    sd(n);
    mp.clear();
    for (int i = 0; i < n; i++)
    {
        scanf("%s", t);
        save(i);
        vector<int> aa, bb, cc, dd;
        if (s[i].a == 4)
        {
            for (int j = 1; j <= 3; j++)
            {
                aa.push_back(j);
            }
        }
        else
        {
            aa.push_back(s[i].a);
        }
        if (s[i].b == 4)
        {
            for (int j = 1; j <= 3; j++)
            {
                bb.push_back(j);
            }
        }
        else
        {
            bb.push_back(s[i].b);
        }
        if (s[i].c == 4)
        {
            for (int j = 1; j <= 3; j++)
            {
                cc.push_back(j);
            }
        }
        else
        {
            cc.push_back(s[i].c);
        }
        if (s[i].d == 4)
        {
            for (int j = 1; j <= 3; j++)
            {
                dd.push_back(j);
            }
        }
        else
        {
            dd.push_back(s[i].d);
        }

        for (auto A : aa)
        {
            for (auto B : bb)
            {
                for (auto C : cc)
                {
                    for (auto D : dd)
                    {
                        mp[A * 1000 + B * 100 + C * 10 + D] = i + 1;
                    }
                }
            }
        }
    }
    int k;
    vector<int> success;
    for (int i = 0; i < n; i++)
    {
        for (int j = i + 1; j < n; j++)
        {
            k = 0;
            vector<int> aa, bb, cc, dd;
            if (s[i].a == 4 || s[j].a == 4)
            {
                aa.push_back(1);
                aa.push_back(2);
                aa.push_back(3);
            }
            else if (s[i].a == s[j].a)
            {
                aa.push_back(s[i].a);
            }
            else
            {
                aa.push_back(6 - s[i].a - s[j].a);
            }
            if (s[i].b == 4 || s[j].b == 4)
            {
                bb.push_back(1);
                bb.push_back(2);
                bb.push_back(3);
            }
            else if (s[i].b == s[j].b)
            {
                bb.push_back(s[i].b);
            }
            else
            {
                bb.push_back(6 - s[i].b - s[j].b);
            }
            if (s[i].c == 4 || s[j].c == 4)
            {
                cc.push_back(1);
                cc.push_back(2);
                cc.push_back(3);
            }
            else if (s[i].c == s[j].c)
            {
                cc.push_back(s[i].c);
            }
            else
            {
                cc.push_back(6 - s[i].c - s[j].c);
            }
            if (s[i].d == 4 || s[j].d == 4)
            {
                dd.push_back(1);
                dd.push_back(2);
                dd.push_back(3);
            }
            else if (s[i].d == s[j].d)
            {
                dd.push_back(s[i].d);
            }
            else
            {
                dd.push_back(6 - s[i].d - s[j].d);
            }
            for (auto A : aa)
            {
                for (auto B : bb)
                {
                    for (auto C : cc)
                    {
                        for (auto D : dd)
                        {
                            k = A * 1000 + B * 100 + C * 10 + D;
                            if (mp[k] && mp[k] != i + 1 && mp[k] != j + 1)
                            {
                                success.push_back(i + 1);
                                success.push_back(j + 1);
                                success.push_back(mp[k]);
                                break;
                            }
                        }
                        if (success.size())
                            break;
                    }
                    if (success.size())
                        break;
                }
                if (success.size())
                    break;
            }
            if (success.size())
                break;
        }
        if (success.size())
            break;
    }
    if (success.empty())
    {
        printf(" -1
");
    }
    else
    {
        for (auto x : success)
        {
            printf(" %d", x);
        }
        printf("
");
        // success.clear();
    }
}

int main()
{
#ifdef ONLINE_JUDGE
#else
    freopen("/home/jungu/code/in.txt", "r", stdin);
    // freopen("/home/jungu/code/out.txt", "w", stdout);
    // freopen("/home/jungu/code/out.txt","w",stdout);
#endif
    // ios::sync_with_stdio(false);
    cin.tie(0), cout.tie(0);

    int T = 1;
    sd(T);
    int cas = 1;
    while (T--)
    {
        printf("Case #%d:", cas++);
        solve();
    }

    return 0;
}