View Compilation Error

0_0_17697834_24829.cpp: In function 'int main()':
0_0_17697834_24829.cpp:22:2: error: 'cin' was not declared in this scope
  cin >> n >> m >> t;
  ^
0_0_17697834_24829.cpp:37:4: error: 'cout' was not declared in this scope
    cout << "YES" << endl;
    ^
0_0_17697834_24829.cpp:37:21: error: 'endl' was not declared in this scope
    cout << "YES" << endl;
                     ^
0_0_17697834_24829.cpp:39:4: error: 'cout' was not declared in this scope
    cout << "NO" << endl;
    ^
0_0_17697834_24829.cpp:39:20: error: 'endl' was not declared in this scope
    cout << "NO" << endl;
                    ^