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Submission #869627

# Submission time Handle Problem Language Result Execution time Memory
869627 2023-11-05T04:46:58 Z theghostking Balloons (CEOI11_bal) C++17
20 / 100
 235 ms 11348 KB 
#include <bits/stdc++.h>
using namespace std;

long double ck(long double posi, long double posj, long double ri){
    long double on = ((posj - posi) * (posj - posi));
    return (on) / (4.0L * ri);
}

int main() {
    int n;
    cin >> n;
    pair<long double, long double> bal[n];
    for (int i = 0; i < n; i++) {
        cin >> bal[i].first >> bal[i].second;
    }
    stack<pair<int, long double>> s;
    vector<long double> ans(n);
    ans[0] = bal[0].second;
    s.push({0, bal[0].second});
    for (int i = 1; i < n; i++) {
        ans[i] = bal[i].second;
        if (!s.empty()) {
            pair<int, long double> a = s.top();
            while (!s.empty()) {
                long double v = ck(bal[a.first].first, bal[i].first, a.second);
                ans[i] = min(ans[i], v);
                if (v > ans[a.first]) {
                    s.pop();
                    if (!s.empty()) {
                        a = s.top();
                    }
                }
                else {
                    break;
                }
            }
        }
        if (!s.empty()) {
            pair<int, long double> a = s.top();
            ans[i] = min(ck(bal[a.first].first, bal[i].first, a.second), bal[i].second);
        }
        s.push({i, ans[i]});
    }
    for (auto x : ans) {
        cout << fixed << setprecision(3) << x << '\n';
    }
    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB 10 numbers

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB 2 numbers

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB 14th numbers differ - expected: '2.6090000000', found: '7.1410000000', error = '4.5320000000'
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 348 KB 504th numbers differ - expected: '160.9360000000', found: '163.0000000000', error = '2.0640000000'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 23 ms 1372 KB 653rd numbers differ - expected: '96.2810000000', found: '123.0000000000', error = '26.7190000000'
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 63 ms 3176 KB 14171st numbers differ - expected: '0.7300000000', found: '0.7430000000', error = '0.0130000000'
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 120 ms 5848 KB 7445th numbers differ - expected: '0.7860000000', found: '0.8060000000', error = '0.0200000000'
2 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 139 ms 6736 KB 4791st numbers differ - expected: '0.8470000000', found: '0.8730000000', error = '0.0260000000'
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 192 ms 9168 KB 1732nd numbers differ - expected: '2.0480000000', found: '2.8120000000', error = '0.7640000000'
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 235 ms 11348 KB 2732nd numbers differ - expected: '2.5370000000', found: '2.7380000000', error = '0.2010000000'
2 Halted 0 ms 0 KB -