fl.cpp

#include <iostream>
#include <cmath>
#include <cstdio>
#include <cstdlib>
 
using namespace std;
 
int main(int argc, char** argv) {
    int num = 0;
 
    while(scanf("1/%d\n", &num) == 1) {
 
        int res = 0;
//        double n = 1.0 / num;
        double subSum = 0;
//        int subSumInt = 0;
        double EPS = 1e-10;
 
        for (double i = num+1; i <= 2*num; i++) {     
            subSum = (num*i)/(i-num);
//            cout << "Subsum: " << subSum << "(int) " << (int)subSum<<endl;
 
            if(subSum - (int)subSum <= EPS) {
                res++;
            }
 
 
//            subSum = 1.0/(n - 1.0/i);
//            cout << subSum << endl;
//            subSumInt = subSum;
 
            /*if(fabs((subSum * i)/(subSum+i) - num) <= EPS) {
                res++;
            } */           
//            if(subSum - subSumInt == 0) {
//                res++;
//            }            
        }
 
        cout << res << endl;
//        break;
    }
 
 
    return (EXIT_SUCCESS);
}