View Compilation Error

0_0_39508996_8160.cpp: In function 'void run()':
0_0_39508996_8160.cpp:13:5: error: 'in' was not declared in this scope; did you mean 'sin'?
   13 |     in >> n >> m; allsum = 0;
      |     ^~
      |     sin
0_0_39508996_8160.cpp:53:5: error: 'out' was not declared in this scope
   53 |     out << ans << "\n";
      |     ^~~
0_0_39508996_8160.cpp: In function 'int main()':
0_0_39508996_8160.cpp:58:5: error: 'in' was not declared in this scope; did you mean 'sin'?
   58 |     in >> t;
      |     ^~
      |     sin