View Compilation Error

0_0_18321176_21425.cpp: In function 'int main()':
0_0_18321176_21425.cpp:60:20: error: 'ans' was not declared in this scope
         if( m == 1)ans = n;
                    ^
0_0_18321176_21425.cpp:62:26: error: 'ans' was not declared in this scope
         printf("%I64d\n",ans);
                          ^