View Compilation Error

0_0_21385636_22387.cpp: In function 'int main()':
0_0_21385636_22387.cpp:59:16: error: 'n' was not declared in this scope
         cin >> n >> m;
                ^
0_0_21385636_22387.cpp:59:21: error: 'm' was not declared in this scope
         cin >> n >> m;
                     ^