View Compilation Error

0_0_39157886_22879.cpp: In function 'void solve()':
0_0_39157886_22879.cpp:30:27: error: 'f1' was not declared in this scope
   30 |         if(vis1[a[i]]==0) f1++;
      |                           ^~
0_0_39157886_22879.cpp:31:27: error: 'f2' was not declared in this scope
   31 |         if(vis2[b[i]]==0) f2++;
      |                           ^~
0_0_39157886_22879.cpp:35:8: error: 'f1' was not declared in this scope
   35 |     if(f1==n&&f2==n) cout<<"Just a game of chance.\n";
      |        ^~
0_0_39157886_22879.cpp:35:15: error: 'f2' was not declared in this scope
   35 |     if(f1==n&&f2==n) cout<<"Just a game of chance.\n";
      |               ^~