oj.uz

Submission #973111

# Submission time Handle Problem Language Result Execution time Memory
973111 2024-05-01T13:50:18 Z njoop Mobile (BOI12_mobile) C++17
0 / 100
 1000 ms 33984 KB 
#include <bits/stdc++.h>
#define pi pair<double, double>
using namespace std;

double x, y, L, l=0, r=1e9, mid, de, cov;
pi arr[1000010];
vector<pi> in;
int n;

bool solve(double rad) {
    in.clear();
    cov = 0;
    for(int i=1; i<=n; i++) {
        de = pow(rad, 2) - pow(abs(arr[i].second), 2);
        de = sqrt(de);
        if(de < 0) continue;
        in.push_back({arr[i].first-de, arr[i].first+de});
    }
    sort(in.begin(), in.end());
    for(auto i: in) {
        if(i.first > cov) return 0;
        cov = max(cov, i.second);
        if(cov >= L) return 1;
    }
    return 0;
}

int main() {
    cin.tie(0)->sync_with_stdio(0);
    cin >> n >> L;
    for(int i=1; i<=n; i++) {
        cin >> arr[i].first >> arr[i].second;
    }
    while(l+0.0001 < r) {
        mid = (l+r)/2;
        if(solve(mid)) {
            r = mid;
        } else {
            l = mid + 0.0001;
        }
    }
    cout << fixed << setprecision(6) << l;
    return 0;
}

Subtask #1
0 / 4.0

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

Subtask #2
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 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 6 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 13 ms 604 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 600 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 604 KB Output is correct
2 Correct 7 ms 756 KB Output is correct
3 Correct 9 ms 604 KB Output is correct
4 Incorrect 12 ms 604 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #7
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 175 ms 4816 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 201 ms 4824 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 117 ms 4820 KB Output is correct
2 Correct 204 ms 4824 KB Output is correct
3 Correct 182 ms 4856 KB Output is correct
4 Incorrect 331 ms 4816 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #10
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 212 ms 4812 KB Output is correct
2 Correct 270 ms 4812 KB Output is correct
3 Correct 220 ms 4816 KB Output is correct
4 Incorrect 333 ms 4812 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #11
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 146 ms 4812 KB Output is correct
2 Correct 275 ms 5068 KB Output is correct
3 Correct 222 ms 4816 KB Output is correct
4 Incorrect 268 ms 4812 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #12
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 773 ms 18424 KB Output is correct
2 Execution timed out 1022 ms 17132 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #13
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1020 ms 17168 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #14
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 866 ms 29416 KB Output is correct
2 Execution timed out 1016 ms 29120 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #15
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1066 ms 29168 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 1062 ms 30184 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 1004 ms 29892 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 1022 ms 32448 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 1060 ms 33020 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 1016 ms 33272 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 1028 ms 33984 KB Time limit exceeded
2 Halted 0 ms 0 KB -