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답안 #838864

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
838864 2023-08-28T02:00:45 Z SnowRaven52 Mobile (BOI12_mobile) C++17
100 / 100
 397 ms 35208 KB 
#include<bits/stdc++.h>
using namespace std;

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n, len;
    cin >> n >> len;
    vector<pair<long long, long long>> v(n);
    for (int i = 0; i < n; ++i) {
        int a, b;
        cin >> a >> b;
        v[i] = {a, b};
    }
    double l = 0.0, r = 2e9;
    while (r - l > 1e-3) {
        double radius = (l + r) / 2.0;
        double mx = 0;
        for (int j = 0; j < n; j++) {
            long long x = v[j].first;
            long long y = v[j].second;
            double a = sqrt( radius * radius - y * y);
            if (x - a < mx) {
                mx = max(x + a, mx);
            }
        }
        if (mx >= len) {
            r = radius;
        } else {
            l = radius;
        }
    }
    cout << setprecision(20) << r;
    return 0;
}

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 320 KB Output is correct
4 Correct 1 ms 212 KB Output is correct

Subtask #2
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 316 KB Output is correct
3 Correct 1 ms 320 KB Output is correct
4 Correct 0 ms 212 KB Output is correct

Subtask #3
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct

Subtask #4
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 340 KB Output is correct
2 Correct 2 ms 468 KB Output is correct
3 Correct 2 ms 436 KB Output is correct
4 Correct 2 ms 468 KB Output is correct

Subtask #5
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 340 KB Output is correct
2 Correct 2 ms 584 KB Output is correct
3 Correct 2 ms 340 KB Output is correct
4 Correct 3 ms 456 KB Output is correct

Subtask #6
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 340 KB Output is correct
2 Correct 2 ms 340 KB Output is correct
3 Correct 2 ms 340 KB Output is correct
4 Correct 2 ms 460 KB Output is correct
5 Correct 2 ms 436 KB Output is correct

Subtask #7
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 27 ms 1492 KB Output is correct
2 Correct 20 ms 1556 KB Output is correct
3 Correct 14 ms 1748 KB Output is correct
4 Correct 25 ms 2644 KB Output is correct
5 Correct 13 ms 1480 KB Output is correct

Subtask #8
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 1492 KB Output is correct
2 Correct 26 ms 1492 KB Output is correct
3 Correct 26 ms 1704 KB Output is correct
4 Correct 26 ms 2704 KB Output is correct
5 Correct 36 ms 3072 KB Output is correct

Subtask #9
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 19 ms 1620 KB Output is correct
2 Correct 24 ms 1620 KB Output is correct
3 Correct 24 ms 2528 KB Output is correct
4 Correct 36 ms 3796 KB Output is correct
5 Correct 25 ms 2644 KB Output is correct

Subtask #10
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 31 ms 1876 KB Output is correct
2 Correct 25 ms 3280 KB Output is correct
3 Correct 26 ms 2908 KB Output is correct
4 Correct 36 ms 3800 KB Output is correct
5 Correct 30 ms 3028 KB Output is correct

Subtask #11
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 27 ms 1876 KB Output is correct
2 Correct 28 ms 3268 KB Output is correct
3 Correct 24 ms 2904 KB Output is correct
4 Correct 36 ms 3796 KB Output is correct
5 Correct 30 ms 3156 KB Output is correct

Subtask #12
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 105 ms 8148 KB Output is correct
2 Correct 131 ms 15804 KB Output is correct
3 Correct 125 ms 15296 KB Output is correct
4 Correct 174 ms 17600 KB Output is correct
5 Correct 156 ms 14928 KB Output is correct

Subtask #13
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 128 ms 8148 KB Output is correct
2 Correct 198 ms 14660 KB Output is correct
3 Correct 120 ms 13764 KB Output is correct
4 Correct 174 ms 17356 KB Output is correct
5 Correct 175 ms 15424 KB Output is correct

Subtask #14
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 151 ms 9684 KB Output is correct
2 Correct 153 ms 18912 KB Output is correct
3 Correct 170 ms 18380 KB Output is correct
4 Correct 219 ms 21472 KB Output is correct
5 Correct 197 ms 17624 KB Output is correct

Subtask #15
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 152 ms 9684 KB Output is correct
2 Correct 238 ms 17496 KB Output is correct
3 Correct 151 ms 16476 KB Output is correct
4 Correct 211 ms 21340 KB Output is correct
5 Correct 186 ms 18356 KB Output is correct

Subtask #16
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 148 ms 11220 KB Output is correct
2 Correct 181 ms 22028 KB Output is correct
3 Correct 172 ms 21364 KB Output is correct
4 Correct 245 ms 24700 KB Output is correct
5 Correct 209 ms 20224 KB Output is correct

Subtask #17
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 174 ms 11220 KB Output is correct
2 Correct 275 ms 20472 KB Output is correct
3 Correct 178 ms 19584 KB Output is correct
4 Correct 250 ms 24568 KB Output is correct
5 Correct 219 ms 21384 KB Output is correct

Subtask #18
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 191 ms 12756 KB Output is correct
2 Correct 203 ms 25112 KB Output is correct
3 Correct 206 ms 24356 KB Output is correct
4 Correct 296 ms 28436 KB Output is correct
5 Correct 262 ms 23960 KB Output is correct

Subtask #19
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 199 ms 12756 KB Output is correct
2 Correct 304 ms 23316 KB Output is correct
3 Correct 214 ms 22296 KB Output is correct
4 Correct 285 ms 28180 KB Output is correct
5 Correct 248 ms 24352 KB Output is correct

Subtask #20
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 220 ms 15956 KB Output is correct
2 Correct 265 ms 31436 KB Output is correct
3 Correct 254 ms 30420 KB Output is correct
4 Correct 397 ms 35048 KB Output is correct
5 Correct 334 ms 29524 KB Output is correct

Subtask #21
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 249 ms 15936 KB Output is correct
2 Correct 385 ms 29140 KB Output is correct
3 Correct 250 ms 28240 KB Output is correct
4 Correct 359 ms 35208 KB Output is correct
5 Correct 319 ms 30632 KB Output is correct