Submission #470624

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Source Code Expand

#include <iostream>
#include <algorithm>
#include <cstdio>

typedef long long ll;

int n, a, b;
int max = 0, min = 1000000001;
double avg;

int main(){
	std::cin >> n >> a >> b;
	ll sum = 0;
	for(int i = 0; i < n; i++){
		int s;
		std::cin >> s;
		max = std::max(max, s);
		min = std::min(min, s);
		sum += s;
	}
	avg = sum / (double)n;

	double p = (max - min) / (double)b;
	if(p == 0){
		std::cout << -1 << std::endl;
		return 0;
	}
	p = 1 / p;
	double q = a - avg * p;
	printf("%.10f %.10f\n", p, q);

	return 0;
}

Submission Info

Judge Result