#include <iostream>

using namespace std;
int vm;
int vd;
int a;
int b;
int main()
{
   a=5;
   b=10;
   vd=a-b;
   vm=10;
    cout << vd <<","<< vm <<endl;
        if(vd<0)
            {vm=vm-1;
            vd=vd-2*vd;}
    cout << vd <<","<< vm <<endl;
    return 0;
}