oj.uz

Submission #698058

# Submission time Handle Problem Language Result Execution time Memory
698058 2023-02-12T07:31:33 Z vjudge1 Mobile (BOI12_mobile) C++17
0 / 100
 1000 ms 87236 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;
}


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] *= 1e4;
        }
    }
    L *= 1e4;
    int l = 0, r = 4e13;
    while (r - l > 1)
    {
        int m = l+r>>1;
        if (check(m, L, stations))
            r = m;
        else
            l = m;
    }
    cout << (static_cast<double>(r) / 1e4) << "\n";
}

Compilation message

mobile.cpp: In function 'int32_t main()':
mobile.cpp:51:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   51 |         int m = l+r>>1;
      |                 ~^~

Subtask #1
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 #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 9 ms 528 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 16 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 17 ms 696 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 20 ms 724 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 275 ms 6836 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 384 ms 7132 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 593 ms 7756 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #10
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 718 ms 9660 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #11
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 257 ms 5836 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 1076 ms 43588 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 1064 ms 39336 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 1071 ms 52332 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 1089 ms 43716 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 1084 ms 61020 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 1084 ms 51424 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 1078 ms 69712 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 1086 ms 58496 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 1094 ms 87236 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 1087 ms 70976 KB Time limit exceeded
2 Halted 0 ms 0 KB -