1049.txt

#include <iostream>
#include <math.h>
#include <stdio.h>
using namespace std;

int l,p,ans;

int gcd(int a,int b){
    while(b != 0){
        a %= b;
        swap(a,b);
    }

    return a;
}

int main()
{
    while(scanf("%d",&l)!=EOF){
        ans=0;
        int x = sqrt(l / 2);

        for(int n=1;n<=x;n++){
            for(int m=1;m<n;m++){
                if(gcd(n,m) == 1 && (n-m) %2 == 1){
                    p = 2*n*(n+m);
                    ans += (l/p);
                }
            }
        }

        printf("%d\n",ans);
    }

    return 0;
}