#include<iostream> using namespace std; int main() { int N,i,x,y,n; cout <<"Please input number:"<<endl; cin >> N; for(i=1;N>i;i++){ N=N-i; } n=N; if(i%2==0) y=n,x=i+1-n ; else x=n,y=i+1-n; cout<<y<<"/"<<x<<endl; return 0; }