View Compilation Error

0_0_39373670_16641.cpp: In function 'int main()':
0_0_39373670_16641.cpp:41:33: error: 'ans' was not declared in this scope; did you mean 'abs'?
   41 |                                 ans += m1.fi * m2.fi * m1.se;
      |                                 ^~~
      |                                 abs
0_0_39373670_16641.cpp:46:30: error: 'ans' was not declared in this scope; did you mean 'abs'?
   46 |                 else cout << ans << endl;
      |                              ^~~
      |                              abs