View Compilation Error

0_0_29606899_23969.cpp: In function 'int main()':
0_0_29606899_23969.cpp:10:26: error: 'n' was not declared in this scope
         for(int i = 1;i<=n;i++)
                          ^
0_0_29606899_23969.cpp:12:26: error: 'm' was not declared in this scope
         for(int i = 1;i<=m;i++)
                          ^