运行 ID: 55987

Main.cc: In function ‘int main()’:
Main.cc:7:11: error: ‘gcd’ was not declared in this scope
     int m=gcd(a,b);
           ^~~
Main.cc:7:11: note: suggested alternative: ‘gcvt’
     int m=gcd(a,b);
           ^~~
           gcvt