恶心的模拟题，考场上犯了一堆错误，多组数据清空没清完、数组开小。。。民间都是50分，结果CCF90。。
考完后随便改改就过了，还好只少了10分，如果真的是50，我估计会疯掉。
因为考场的时候没写好，所以最终的代码也很难看。
1 #include<bits/stdc++.h> 2 using namespace std; 3 int T,n,stk[100],p[100],fnum,stack_num,sck[110],sck_num; 4 char s[20],ch[2],res[100]; 5 inline void init() 6 { 7 memset(p,0,sizeof(p)); 8 memset(res,0,sizeof(res)); 9 memset(sck,0,sizeof(sck)); 10 memset(stk,0,sizeof(stk)); 11 sck_num=0; 12 stack_num=0; 13 fnum=0; 14 } 15 inline void Dealwith() 16 { 17 init(); 18 int ans=0,mark=0,nxt=1,nnum=0,las=0,done=0; 19 for(register int i=1;i<=n;++i) 20 { 21 scanf("%s",ch); 22 if(ch[0]=='F') 23 { 24 if(done) 25 { 26 scanf("%s",ch); 27 scanf("%s",ch); 28 scanf("%s",ch); 29 continue; 30 } 31 fnum++; 32 scanf("%s",ch); 33 if(p[ch[0]-'a']) 34 { 35 printf("ERR "); 36 done=1; 37 } 38 p[ch[0]-'a']=1; 39 stk[++stack_num]=ch[0]-'a'; 40 int fl1,num1=0,fl2,num2=0; 41 42 scanf("%s",ch); 43 if(ch[0]>='0'&&ch[0]<='9') 44 { 45 fl1=0; 46 for(register int j=0;j<strlen(ch);++j)num1=(num1<<3)+(num1<<1)+(ch[j]^'0'); 47 } 48 else fl1=1; 49 50 scanf("%s",ch); 51 if(ch[0]>='0'&&ch[0]<='9') 52 { 53 fl2=0; 54 for(register int j=0;j<strlen(ch);++j)num2=(num2<<3)+(num2<<1)+(ch[j]^'0'); 55 } 56 else fl2=1; 57 58 if(fnum!=nxt)continue; 59 60 if(fl1==1&&fl2==0)nxt=fnum; 61 else if(fl1==0&&fl2==0) 62 { 63 if(num1>num2)nxt=fnum; 64 else nxt=fnum+1,sck[++sck_num]=1; 65 } 66 else if(fl1==0&&fl2==1) 67 { 68 mark=1; 69 nnum++; 70 if(ans<nnum)ans++; 71 nxt=fnum+1; 72 sck[++sck_num]=2; 73 } 74 else sck[++sck_num]=1,nxt=fnum+1; 75 } 76 else 77 { 78 if(done)continue; 79 if(!fnum) 80 { 81 printf("ERR "); 82 done=1; 83 } 84 if(done)continue; 85 if(nxt==fnum+1) 86 { 87 fnum--,nxt--; 88 if(sck[sck_num--]==2)nnum--; 89 } 90 else fnum--; 91 p[stk[stack_num--]]=0; 92 } 93 } 94 if(done)return ; 95 if(fnum) 96 { 97 printf("ERR "); 98 return ; 99 } 100 if(mark) 101 { 102 res[0]='O',res[1]='(',res[2]='n',res[3]='^'; 103 int respos=3,tmppos=0; 104 char tmp[10]; 105 while(ans)tmp[++tmppos]=ans%10+'0',ans/=10; 106 while(tmppos)res[++respos]=tmp[tmppos--]; 107 res[++respos]=')';res[++respos]=' '; 108 } 109 else res[0]='O',res[1]='(',res[2]='1',res[3]=')',res[4]=' '; 110 111 if(!strcmp(s,res))printf("Yes "); 112 else printf("No "); 113 } 114 int main() 115 { 116 freopen("complexity.in","r",stdin); 117 freopen("complexity.out","w",stdout); 118 scanf("%d",&T); 119 while(T--) 120 { 121 scanf("%d",&n);scanf("%s",s); 122 Dealwith(); 123 } 124 return 0; 125 }