View Compilation Error

0_0_24960664_10509.cpp: In function 'int main()':
0_0_24960664_10509.cpp:4:5: error: 'dp' was not declared in this scope
     dp[2][1][1]=dp[2][1][2]=dp[2][1][3]=1;  
     ^
0_0_24960664_10509.cpp:19:18: error: 'scanf' was not declared in this scope
     scanf("%d",&s);  
                  ^
0_0_24960664_10509.cpp:24:31: error: 'printf' was not declared in this scope
         if(n==0) {printf("0\n");continue;}  
                               ^
0_0_24960664_10509.cpp:25:37: error: 'printf' was not declared in this scope
         else if(n==1)  {printf("3\n");continue;}  
                                     ^
0_0_24960664_10509.cpp:29:26: error: 'printf' was not declared in this scope
         printf("%d\n",ans);  
                          ^