제출 #1121363

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1121363		Leyna	Balloons (CEOI11_bal)	C++17	0 / 100	474 ms	6988 KiB

bal

#include <bits/stdc++.h>

using namespace std;

int main(){
    int n; cin >> n;
    vector<int> x(n), r(n);
    for (int i=0; i<n; i++){
        cin >> x[i] >> r[i];
    }
    vector<float> res(n);
    res[0] = r[0];
    int last_idx = 0;
    for (int i=1; i<n; i++){
        float r1 = float((x[i]-x[i-1]) * (x[i]-x[i-1])) / float(4 * res[i-1]);
        float r_last = float((x[i]-x[last_idx]) * (x[i]-x[last_idx])) / float(4 * res[last_idx]);
        res[i] = min(float(r[i]), min(r1, r_last));
        if(r1 < r_last){
            last_idx = i;
        }
    }
    for (float a : res) cout << fixed << setprecision(3) << a << endl;
}

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