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Submission #872449

# Submission time Handle Problem Language Result Execution time Memory
872449 2023-11-13T06:39:07 Z sleepntsheep Balloons (CEOI11_bal) C++17
40 / 100
 2000 ms 3352 KB 
#include <iostream>
#include <iomanip> 
#include <cmath>
#include <cstring>
#include <vector>
#include <algorithm>
#include <deque>
#include <set>
#include <utility>
#include <array>

using i64 = long long;
using u64 = unsigned long long;
using f64 = double;
using f80 = long double;

using namespace std;
#define ALL(x) x.begin(), x.end()
#define ShinLena cin.tie(nullptr)->sync_with_stdio(false);
#define N 200005

int n, x[N], r[N];
f80 rr[N];

int main()
{
    ShinLena;
    cin >> n;
    for (int i = 0; i < n; ++i) cin >> x[i] >> r[i];

    rr[0] = r[0];
    for (int i = 1; i < n; ++i)
    {
        f80 l = 0, r = ::r[i], iter = 100;
        for (; iter--;)
        {
            f80 m = (l+r)/2, ok = 1;
            for (int j = 0; ok && j < i; ++j)
            {
                f80 A = 1L * x[i] * x[i] + 1L * x[j] * x[j] - 2L * x[i] * x[j] - 4L * rr[j] * m;
                if (A < 0) ok = 0;
            }
            if (ok) l = m;
            else r = m;
        }

        rr[i] = r;
    }

    cout << fixed << setprecision(3);
    for (int i = 0; i < n; ++i)
        cout << rr[i] << '\n';

    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB 10 numbers

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2396 KB 2 numbers

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 2516 KB 505 numbers

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 515 ms 2396 KB 2000 numbers

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2019 ms 2768 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2086 ms 2784 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2009 ms 2568 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2051 ms 3108 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2028 ms 2992 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2063 ms 3352 KB Time limit exceeded
2 Halted 0 ms 0 KB -