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Submission #973312

# Submission time Handle Problem Language Result Execution time Memory
973312 2024-05-01T18:02:30 Z IdanRosen Mobile (BOI12_mobile) C++
0 / 100
 1000 ms 62580 KB 
#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
typedef pair<ll, ll> pll;
typedef long double ld;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);

    ll n, l;
    cin >> n >> l;

    vector<pll> arr(n);
    for (auto &ref: arr) cin >> ref.first >> ref.second;

    ld start = 0;
    ld end = 1e12;
    while (end - start > 1e-4) {
        ld mid = start + (end - start) / 2;

        bool check = false;
        {
            vector<pair<ld, ld>> ranges(n);
            for (int i = 0; i < n; i++) {
                if (mid < arr[i].second) continue;

                ll center = arr[i].first;
                ld delta = sqrt(pow(mid, 2) - pow(arr[i].second, 2));
                ranges[i] = {center - delta, center + delta};
            }

            std::sort(ranges.begin(), ranges.end());

            pair<ld,ld> combined = ranges[0];
            for (int i = 1; i < n; i++) {
                pair<ld,ld>& curr = ranges[i];
                if (combined.second < curr.first) {
                    break;
                }

                combined.second = curr.second;
            }

            if (combined.first <= 0 && l <= combined.second)
                check = true;
            else
                check = false;
        }

        if (check)
            end = mid;
        else
            start = mid;
    }

    cout << setprecision(6) << start << endl;
}

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 500 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 13 ms 600 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 25 ms 696 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 34 ms 720 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 700 KB Output is correct
2 Incorrect 15 ms 700 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #7
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 308 ms 4696 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 514 ms 4856 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 295 ms 5268 KB Output is correct
2 Incorrect 424 ms 5468 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #10
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 417 ms 6696 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #11
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 351 ms 6488 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #12
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1006 ms 28108 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #13
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1045 ms 31868 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #14
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1048 ms 33772 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #15
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1055 ms 38228 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #16
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1057 ms 39312 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #17
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1018 ms 44256 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #18
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1025 ms 44884 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #19
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1097 ms 50720 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #20
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1006 ms 55632 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #21
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1036 ms 62580 KB Time limit exceeded
2 Halted 0 ms 0 KB -