找不出来毛病

#include<bits/stdc++.h>
using namespace std;
int a,b,c,d,m;
char h;
int gcd(int a,int b){
	if(b==0) return b;
	return gcd(b,a%b);
}
int main()
{
    cin>>a;
    cin>>h;
    cin>>b>>c;
    cin>>h;
    cin>>d;
    a*=c;
    b*=d;
    m=gcd(a,b);
    a/=m;
    b/=m;
    cout<<a<<" "<<b;
    return 0;
}