foo.cc: In function 'int main()':
foo.cc:7:17: error: redeclaration of 'int m'
    7 |     int n,m,i,j,m,q;
      |                 ^
foo.cc:7:11: note: 'int m' previously declared here
    7 |     int n,m,i,j,m,q;
      |           ^
foo.cc:8:6: error: redeclaration of 'int m'
    8 |  int m;
      |      ^
foo.cc:7:11: note: 'int m' previously declared here
    7 |     int n,m,i,j,m,q;
      |           ^
foo.cc:18:7: error: 'min' was not declared in this scope; did you mean 'std::min'?
   18 |  side=min(n,m);
      |       ^~~
      |       std::min
In file included from /usr/include/c++/9/algorithm:62,
                 from foo.cc:3:
/usr/include/c++/9/bits/stl_algo.h:3450:5: note: 'std::min' declared here
 3450 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
foo.cc:36:7: error: 'k' was not declared in this scope
   36 |   for(k=0;k<=n-side;k++)
      |       ^

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