Submission #1198786

#	Time	Username	Problem	Language	Result	Execution time	Memory
1198786		Hamed_Ghaffari	Balloons (CEOI11_bal)	C++20	100 / 100	127 ms	8080 KiB

bal

#include<bits/stdc++.h>
using namespace std;

using ll = long long;
using ld = long double;

const int MXN = 2e5+5;
const ld eps = 1e-6;

int n;
ld x[MXN], ans[MXN];

int32_t main() {
    cin.tie(0); cout.tie(0); ios_base::sync_with_stdio(0);
    cout << fixed << setprecision(3);
    cin >> n;
    vector<int> stk;
    for(int i=1; i<=n; i++) {
        cin >> x[i] >> ans[i];
        while(!stk.empty()) {
            ans[i] = min(ans[i], (x[stk.back()]-x[i])*(x[stk.back()]-x[i]) / (4 * ans[stk.back()]));
            if(ans[i] > ans[stk.back()]-eps) stk.pop_back();
            else break;
        }
        stk.push_back(i);
        cout << ans[i] << '\n';
    }
    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