View Compilation Error

0_0_14753500_12554.cpp: In function 'int main(int, char**)':
0_0_14753500_12554.cpp:22:12: error: 'cin' was not declared in this scope
     while (cin >> N >> M) {
            ^
0_0_14753500_12554.cpp:40:13: error: 'cout' was not declared in this scope
             cout << res[j] << ' ';
             ^
0_0_14753500_12554.cpp:41:9: error: 'cout' was not declared in this scope
         cout << res[0] << endl;
         ^
0_0_14753500_12554.cpp:41:27: error: 'endl' was not declared in this scope
         cout << res[0] << endl;
                           ^