View Compilation Error

0_0_20910863_28524.cpp:3:1: error: 'LL' does not name a type
 LL cnt[N];
 ^
0_0_20910863_28524.cpp: In function 'void gao(int, int)':
0_0_20910863_28524.cpp:10:17: error: 'cnt' was not declared in this scope
                 cnt[i] += p;
                 ^
0_0_20910863_28524.cpp:15:12: error: 'cnt' was not declared in this scope
     if(n>1)cnt[n] += p;
            ^
0_0_20910863_28524.cpp: In function 'int main()':
0_0_20910863_28524.cpp:19:18: error: 'scanf' was not declared in this scope
     scanf("%d",&t);
                  ^
0_0_20910863_28524.cpp:26:16: error: 'cnt' was not declared in this scope
         memset(cnt,0,sizeof(cnt));
                ^
0_0_20910863_28524.cpp:26:33: error: 'memset' was not declared in this scope
         memset(cnt,0,sizeof(cnt));
                                 ^
0_0_20910863_28524.cpp:50:46: error: 'printf' was not declared in this scope
         printf("Case #%d: %d / %d\n",ca++,x,y);
                                              ^