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Submission #916408

# Submission time Handle Problem Language Result Execution time Memory
916408 2024-01-25T19:57:25 Z codefox Mobile (BOI12_mobile) C++14
4 / 100
 277 ms 15964 KB 
#include<bits/stdc++.h>
 
using namespace std;
 
#define ll long long
#define pii pair<ll, ll>
#define pdd pair<double, double>
 
double prec = 1e6;
 
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
 
    //freopen("input.txt", "r", stdin);
    //freopen("output.txt", "w", stdout);
    
    cout << setprecision(5);
    int n, l;
    cin >> n >> l;
    vector<pii> stations(n);
    for (int i = 0; i < n; i++)
    {
        int a, b;
        cin >> a >> b;
        stations[i] = {a, b};
    }
    double dist = 0;
    ll one = 1;
    for (int i = 50; i >= 0; i--)
    {
        dist += (one<<i)/prec;
        double highest = 0;
 
        for (pii ele:stations)
        {
            double dy = ele.second*ele.second;
            double diff = dist*dist-dy;
            if (diff <= 0) continue;
            double dx = sqrt(diff);
            double f = ele.first-dx;
            double s = ele.first+dx;
            if (f < highest) highest = max(highest, s);
        }
        if (highest < l) continue;
        dist -= (one<<i)/prec; 
    }
    cout << dist << "\n";
    return 0;
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 540 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct

Subtask #2
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Incorrect 0 ms 348 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 424 KB Output is correct
4 Incorrect 1 ms 348 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #4
0 / 4.0

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

Subtask #5
0 / 4.0

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

Subtask #6
0 / 5.0

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

Subtask #7
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 26 ms 1628 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 1628 KB Output is correct
2 Incorrect 16 ms 1372 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #9
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 1628 KB Output is correct
2 Incorrect 24 ms 1628 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #10
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 28 ms 1884 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #11
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 28 ms 1884 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #12
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 122 ms 8284 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #13
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 139 ms 8280 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #14
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 148 ms 9820 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #15
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 166 ms 9820 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #16
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 172 ms 11352 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #17
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 192 ms 11352 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #18
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 195 ms 12892 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #19
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 228 ms 12888 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #20
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 244 ms 15964 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #21
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 277 ms 15964 KB Output isn't correct
2 Halted 0 ms 0 KB -