oj.uz

Submission #698062

# Submission time Handle Problem Language Result Execution time Memory
698062 2023-02-12T07:39:43 Z caganyanmaz Mobile (BOI12_mobile) C++14
0 / 100
 1000 ms 78544 KB 
#include <bits/stdc++.h>
#define int int64_t
#define f first
#define s second
#define mp make_pair
using namespace std;

bool check(int r, int L, const vector<array<int, 2>>& stations)
{
    set<pair<int, int>> intervals;
    for (const array<int, 2>& station : stations)
    {
        int diff_sqrd = r * r - station[1] * station[1];
        if (diff_sqrd < 0)
            continue;
        int diff = sqrt(diff_sqrd);
        int _l = station[0] - diff, _r = station[0] + diff;
        if (_l > L || _r < 0)
            continue;
        intervals.insert(mp(_l, _r));
    }
    if (intervals.begin()->f > 0)
        return false;
    int last = (*intervals.begin()).s;
    for (auto it = intervals.begin(); it != intervals.end() && last < L && it->f <= last; it++)
    {
        last = max(last, it->s);
    }
    return last >= L;
}

constexpr static int PRECISION = 1e5;

int32_t main()
{
    
    int N, L;
    cin >> N >> L;
    vector<array<int, 2>> stations(N);
    for (int i = 0; i < N; i++)
    {
        for (int j = 0; j < 2; j++)
        {
            cin >> stations[i][j];
            stations[i][j] *= PRECISION;
        }
    }
    L *= PRECISION;
    int l = 0, r = 4e9 * PRECISION;
    while (r - l > 1)
    {
        int m = (l+r)>>1;
        if (check(m, L, stations))
            r = m;
        else
            l = m;
    }
    cout << (static_cast<double>(r) / PRECISION) << "\n";
}

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 8 ms 504 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 10 ms 596 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 12 ms 684 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 8 ms 596 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 124 ms 4012 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 245 ms 6384 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 353 ms 7044 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #10
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 613 ms 5488 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #11
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 213 ms 4288 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 1096 ms 39348 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 1085 ms 24384 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 1080 ms 47260 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 1090 ms 29052 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 1092 ms 55016 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 1078 ms 33340 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 1075 ms 62804 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 1096 ms 38044 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 1087 ms 78544 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 1045 ms 46532 KB Time limit exceeded
2 Halted 0 ms 0 KB -