oj.uz

Submission #919091

# Submission time Handle Problem Language Result Execution time Memory
919091 2024-01-31T08:37:12 Z Em1L Balloons (CEOI11_bal) C++14
20 / 100
 149 ms 6480 KB 
#include <bits/stdc++.h>
using namespace std;

using ll = long long;
using pii = pair<int, double>;

int main() {
    ios_base::sync_with_stdio(0); cin.tie(0);
    cout << setprecision(3) << fixed;

    int n; cin >> n;

    stack < pii > st;

    auto GetR = [&](pii A, int x) {
        auto [x_, r_] = A;

        return (x_ - x) * (x_ - x) / (4 * r_);
    };

    for (int i = 0, x, r; i < n; i++) {
        cin >> x >> r;

        double R = r;

        while (!st.empty()) {
            double curR = GetR(st.top(), x);

            R = min(R, curR);

            if (R >= st.top().second) {
                st.pop();
            } else {
                break;
            }
        }

        cout << R << "\n";

        st.push(make_pair(x, R));
    }
}

Compilation message

bal.cpp: In lambda function:
bal.cpp:16:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   16 |         auto [x_, r_] = A;
      |              ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB 10 numbers

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 344 KB 2nd numbers differ - expected: '252735385.4379999936', found: '0.9330000000', error = '252735384.5049999952'
2 Halted 0 ms 0 KB -

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB 505 numbers

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 348 KB 506th numbers differ - expected: '365.0000000000', found: '-2481854.0649999999', error = '2482219.0649999999'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 16 ms 1112 KB 655th numbers differ - expected: '591.0000000000', found: '-2402336.3029999998', error = '2402927.3029999998'
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 37 ms 1616 KB 4th numbers differ - expected: '15396.0000000000', found: '-8148.5510000000', error = '23544.5510000000'
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 83 ms 3408 KB 7234th numbers differ - expected: '7160.0000000000', found: '-2398141.9989999998', error = '2405301.9989999998'
2 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 84 ms 3880 KB 4643rd numbers differ - expected: '2427.0000000000', found: '-2355611.7020000000', error = '2358038.7020000000'
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 127 ms 4944 KB 1734th numbers differ - expected: '1856.0220000000', found: '-2324667.3859999999', error = '2326523.4079999998'
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 149 ms 6480 KB 2723rd numbers differ - expected: '859.0470000000', found: '-2333711.4849999999', error = '2334570.5319999997'
2 Halted 0 ms 0 KB -