Submission #1164275

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Source Code Expand

#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <cmath>
#include <cassert>
#define FOR(i,a,b) for(int i=(a);i<(b);i++)
#define REP(i,n) FOR(i,0,n)
#define rep(i,n) FOR(i,0,n)
#define DEBUG(x) cout<<#x<<": "<<x<<endl
#define vint vector<int>
#define vdouble vector<double>
#define vstring vector<string>
using namespace std;

#include<map>
#include<set>
#include<queue>

typedef long long ll;
typedef unsigned long long ull;

const int MAX_N = 1000000;
int N; double A, B;

int main() {

    cin >> N >> A >> B;
    double AVG = 0.0;
    double MN = INT64_MAX;
    double MX = INT64_MIN;
    rep(i, N){
        double s; cin >> s;
        AVG += s;
        MN = min(MN, s);
        MX = max(MX, s);
        fprintf(stderr, "%f %f %f\n", MN, MX, s);
    }
    AVG /= N;

    if(MN == MX) {
        cout << -1 << endl;
        return 0;
    }

    double S = B /(MX - MN) ;
    double Q = A - AVG * S;

    printf("%.10f %.10f\n", S, Q);
}

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