View Compilation Error

0_0_25815096_7088.cpp: In function 'int main()':
0_0_25815096_7088.cpp:73:9: error: 'cout' was not declared in this scope
         cout<<(ans%mod+mod)%mod<<endl;
         ^
0_0_25815096_7088.cpp:73:34: error: 'endl' was not declared in this scope
         cout<<(ans%mod+mod)%mod<<endl;
                                  ^