View Compilation Error

0_0_38894819_21916.cpp: In function 'int main()':
0_0_38894819_21916.cpp:4:5: error: 'cin' was not declared in this scope
    4 |     cin>>N;
      |     ^~~
0_0_38894819_21916.cpp:14:9: error: 'cout' was not declared in this scope
   14 |         cout<< sum;
      |         ^~~~