제출 #714524

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
714524		stevancv	Balloons (CEOI11_bal)	C++14	100 / 100	215 ms	5508 KiB

bal

#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define sp ' '
#define en '\n'
#define smin(a, b) a = min(a, b)
#define smax(a, b) a = max(a, b)
using namespace std;
const int N = 1e5 + 2;
const int M = 1e6 + 2;
const ll linf = 1e18;
ld F(ld xi, ld xj, ld rj) {
    ld c = (xi - xj) * (xi - xj);
    c /= 4 * rj;
    return c;
}
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int n; cin >> n;
    stack<pair<ld, ld>> s;
    for (int i = 0; i < n; i++) {
        ld x, y;
        cin >> x >> y;
        while (!s.empty()) {
            smin(y, F(x, s.top().first, s.top().second));
            if (y >= s.top().second) s.pop();
            else break;
        }
        cout << fixed << showpoint << setprecision(3) << y << en;
        s.push({x, y});
    }
    return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 10 / 10