View Compilation Error

0_0_21944592_8310.cpp:1:1: error: 'include' does not name a type
 include<bits/stdc++.h>
 ^
0_0_21944592_8310.cpp: In function 'int main()':
0_0_21944592_8310.cpp:90:32: error: 'scanf' was not declared in this scope
  while(~scanf("%d%d%d",&n,&m,&p))
                                ^
0_0_21944592_8310.cpp:91:3: error: 'cout' was not declared in this scope
   cout<< f(ans(n,m),p)<<endl; 
   ^
0_0_21944592_8310.cpp:91:25: error: 'endl' was not declared in this scope
   cout<< f(ans(n,m),p)<<endl; 
                         ^