1022.txt

#include <cstdlib>
#include <iostream>

using namespace std;

long i,j,k=1,n,cem,a[10000000], b[10000000];

int main(int argc, char *argv[])
{
    for(i=1; i<=4000; i++)
    {
        cem=i+1;

        for(j=i; j>=1; j--)
        {
            a[k]=j;
            b[k]=cem-j;
            k++;
        }
    }

    while(scanf("%ld",&n)!=EOF)
    printf("%ld/%ld\n",a[n],b[n]);



    system("PAUSE");
    return EXIT_SUCCESS;
}