http://codeforces.com/problemset/problem/185/B

prob.cpp

#include<iostream>
#include<cstdio>
#include<vector>
#include<algorithm>
#include<set>
#include<cstring>
#include<queue>
#include<map>
#include<stack>
#include<climits>
#include<cmath>
#include<sstream>
using namespace std;

int main(){

	int s, a, b, c;
	cin >> s >> a >> b >> c;

	if((a+b+c) == 0) {
		printf("0 0 0\n");
		return 0;
	}

	double x = (double)s*a/(a+b+c);
	double y = (double)s*b/(a+b+c);
	double z = (double)s*c/(a+b+c);

	printf("%.10lf %.10lf %.10lf\n", x, y, z);
}