foo.cc: In function 'int main()':
foo.cc:19:34: error: 'n' was not declared in this scope
   19 |                 if(a*b%i==0&&g(i,n*m/i==n))
      |                                  ^
foo.cc:19:36: error: 'm' was not declared in this scope
   19 |                 if(a*b%i==0&&g(i,n*m/i==n))
      |                                    ^

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