rt

code:

#include <bits/stdc++.h>
using namespace std; 
int main() {
	int a,b=1;
	cin>>n;
	while (a>b) {
		a=a-b;
		b++;
	}
	if(b%2==0) cout<<n<<"/"<<(b+1-a);
	else cout<<b+1-a<<"/"<<a;
	return 0;
}