View Compilation Error

0_0_25870804_27372.cpp: In function 'int main()':
0_0_25870804_27372.cpp:25:18: error: 'scanf' was not declared in this scope
     scanf("%d",&t);
                  ^
0_0_25870804_27372.cpp:30:31: error: 'memset' was not declared in this scope
         memset(ma,0,sizeof(ma));
                               ^
0_0_25870804_27372.cpp:49:27: error: 'printf' was not declared in this scope
             printf("YES\n");
                           ^
0_0_25870804_27372.cpp:51:26: error: 'printf' was not declared in this scope
             printf("NO\n");
                          ^