#include <bits/stdc++.h>
using namespace std;


int main()
{
	int a,b,c;
	cin>>a>>b>>c;
	
	int x=min(a,(b,c));
	int y=max(a,(b,c));
	
	int z=__gcd(x,y);

	cout<<x/z<<"/"<<y/z<<endl;
	


	return 0;
}```