foo.cc: In function 'int main()':
foo.cc:7:22: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
  cout << n=n/m*m+n%m << endl;
            ~~~~~~~~~~^~~~~~~
foo.cc:7:17: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
  cout << n=n/m*m+n%m << endl;
            ~~~~~^~~~

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