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Submission #956310

# Submission time Handle Problem Language Result Execution time Memory
956310 2024-04-01T14:34:49 Z codefox Balloons (CEOI11_bal) C++14
20 / 100
 438 ms 4736 KB 
#include<bits/stdc++.h>

using namespace std;

#define pii pair<int, double>
#define ll long long

int main()
{
    //freopen("input.txt", "r", stdin);
    //freopen("output.txt", "w", stdout);

    cout << fixed;
    cout << setprecision(3);

    int n;
    cin >> n;
    stack<pii> balloons;
    for (int i = 0; i < n; i++)
    {
        int a, b;
        cin >> a >> b;
        double sol = b;
        while (balloons.size())
        {
            ll dn = a-balloons.top().first;
            double r = balloons.top().second;
            if ((r+b)*(r+b) >= dn*dn+(r-b)*(r-b)) 
            {
                sol = (dn*dn)/(4*r);
            }
            if (r>sol)break;
            balloons.pop();
        }
        balloons.push({a, sol});
        cout << sol << "\n";
    }
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 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 2 ms 344 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 5 ms 348 KB 79th numbers differ - expected: '36.0070000000', found: '2269.3920000000', error = '2233.3850000000'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 43 ms 972 KB 137th numbers differ - expected: '67.1010000000', found: '2333.0760000000', error = '2265.9750000000'
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 111 ms 1580 KB 8577th numbers differ - expected: '5928.9960000000', found: '23676.0340000000', error = '17747.0380000000'
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 216 ms 2844 KB 3839th numbers differ - expected: '3727.0020000000', found: '14896.0010000000', error = '11168.9990000000'
2 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 258 ms 3152 KB 1580th numbers differ - expected: '3316.0000000000', found: '13260.0010000000', error = '9944.0010000000'
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 335 ms 3952 KB 326th numbers differ - expected: '1528.0010000000', found: '6104.0030000000', error = '4576.0020000000'
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 438 ms 4736 KB 474th numbers differ - expected: '2445.0010000000', found: '9772.0010000000', error = '7327.0000000000'
2 Halted 0 ms 0 KB -