View Compilation Error

0_0_26416550_19018.cpp: In function 'int main()':
0_0_26416550_19018.cpp:38:18: error: 'scanf' was not declared in this scope
     scanf("%d",&t);
                  ^
0_0_26416550_19018.cpp:73:39: error: 'printf' was not declared in this scope
         printf("%lld\n",(ans+temp)%MOD);
                                       ^