Submission #633268

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
633268	2022-08-22T02:55:19 Z	afatpotato	Mobile (BOI12_mobile)	C++14	100 / 100	429 ms	16032 KB

mobile

#include <bits/stdc++.h>

using namespace std;



pair<long long, long long> tower[1000000];
long long n, l;

int main() {
    ios_base::sync_with_stdio(0);
	cin.tie(0);
    cin >> n >> l;
    for (int i = 0; i < n; i++) {
        cin >> tower[i].first >> tower[i].second;
    }

    double low = 0;
    double high = 1.5e9;

    while (high - low > 1e-3) {
        double mid = (low + high) / 2;
        double cur = 0;
        for (int i = 0; i < n; i++) {
            double delta = sqrt(mid * mid - tower[i].second * tower[i].second);
            double a = tower[i].first - delta;
            double b = tower[i].first + delta;
            if (a <= cur) {
                cur = max(cur, b);
            }
        }
        if (cur > l) {
            high = mid;
        } else {
            low = mid;
        }
    }
    cout << fixed;
    cout << setprecision(4);
    cout << low << endl;
}

Subtask #1
4.0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct

Subtask #2
4.0 / 4.0

#	Verdict	Memory	Grader output
1	Correct	212 KB	Output is correct
2	Correct	212 KB	Output is correct
3	Correct	212 KB	Output is correct
4	Correct	212 KB	Output is correct

Subtask #3
4.0 / 4.0

#	Verdict	Execution time	Memory	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

#	Verdict	Execution time	Memory	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	340 KB	Output is correct

Subtask #5
4.0 / 4.0

#	Verdict	Execution time	Memory	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	340 KB	Output is correct

Subtask #6
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	340 KB	Output is correct
2	Correct	2 ms	400 KB	Output is correct
3	Correct	3 ms	340 KB	Output is correct
4	Correct	3 ms	396 KB	Output is correct
5	Correct	2 ms	340 KB	Output is correct

Subtask #7
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	27 ms	1492 KB	Output is correct
2	Correct	23 ms	1532 KB	Output is correct
3	Correct	14 ms	1164 KB	Output is correct
4	Correct	28 ms	1436 KB	Output is correct
5	Correct	13 ms	1112 KB	Output is correct

Subtask #8
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	24 ms	1552 KB	Output is correct
2	Correct	23 ms	1412 KB	Output is correct
3	Correct	26 ms	1532 KB	Output is correct
4	Correct	33 ms	1464 KB	Output is correct
5	Correct	33 ms	1680 KB	Output is correct

Subtask #9
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	23 ms	1704 KB	Output is correct
2	Correct	26 ms	1612 KB	Output is correct
3	Correct	22 ms	1620 KB	Output is correct
4	Correct	42 ms	1832 KB	Output is correct
5	Correct	27 ms	1716 KB	Output is correct

Subtask #10
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	36 ms	1880 KB	Output is correct
2	Correct	27 ms	1876 KB	Output is correct
3	Correct	26 ms	1876 KB	Output is correct
4	Correct	44 ms	1868 KB	Output is correct
5	Correct	32 ms	1868 KB	Output is correct

Subtask #11
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	27 ms	1876 KB	Output is correct
2	Correct	32 ms	1872 KB	Output is correct
3	Correct	28 ms	1816 KB	Output is correct
4	Correct	41 ms	1872 KB	Output is correct
5	Correct	34 ms	1876 KB	Output is correct

Subtask #12
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	119 ms	8072 KB	Output is correct
2	Correct	151 ms	8136 KB	Output is correct
3	Correct	159 ms	8248 KB	Output is correct
4	Correct	186 ms	8120 KB	Output is correct
5	Correct	167 ms	8136 KB	Output is correct

Subtask #13
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	155 ms	8056 KB	Output is correct
2	Correct	212 ms	8132 KB	Output is correct
3	Correct	131 ms	8100 KB	Output is correct
4	Correct	187 ms	8012 KB	Output is correct
5	Correct	169 ms	8136 KB	Output is correct

Subtask #14
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	142 ms	9580 KB	Output is correct
2	Correct	166 ms	9620 KB	Output is correct
3	Correct	182 ms	9644 KB	Output is correct
4	Correct	270 ms	9600 KB	Output is correct
5	Correct	194 ms	9704 KB	Output is correct

Subtask #15
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	175 ms	9672 KB	Output is correct
2	Correct	252 ms	9704 KB	Output is correct
3	Correct	156 ms	9704 KB	Output is correct
4	Correct	231 ms	9588 KB	Output is correct
5	Correct	207 ms	9716 KB	Output is correct

Subtask #16
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	200 ms	11256 KB	Output is correct
2	Correct	200 ms	11268 KB	Output is correct
3	Correct	194 ms	11176 KB	Output is correct
4	Correct	270 ms	11208 KB	Output is correct
5	Correct	229 ms	11328 KB	Output is correct

Subtask #17
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	211 ms	11264 KB	Output is correct
2	Correct	291 ms	11264 KB	Output is correct
3	Correct	190 ms	11156 KB	Output is correct
4	Correct	262 ms	11272 KB	Output is correct
5	Correct	232 ms	11272 KB	Output is correct

Subtask #18
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	193 ms	12772 KB	Output is correct
2	Correct	232 ms	12804 KB	Output is correct
3	Correct	219 ms	12752 KB	Output is correct
4	Correct	322 ms	12908 KB	Output is correct
5	Correct	266 ms	12888 KB	Output is correct

Subtask #19
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	241 ms	12836 KB	Output is correct
2	Correct	318 ms	12840 KB	Output is correct
3	Correct	213 ms	12716 KB	Output is correct
4	Correct	331 ms	12836 KB	Output is correct
5	Correct	267 ms	12836 KB	Output is correct

Subtask #20
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	279 ms	15952 KB	Output is correct
2	Correct	288 ms	15952 KB	Output is correct
3	Correct	300 ms	15952 KB	Output is correct
4	Correct	400 ms	15948 KB	Output is correct
5	Correct	335 ms	15856 KB	Output is correct

Subtask #21
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	288 ms	15948 KB	Output is correct
2	Correct	408 ms	15932 KB	Output is correct
3	Correct	281 ms	16032 KB	Output is correct
4	Correct	429 ms	15956 KB	Output is correct
5	Correct	344 ms	15952 KB	Output is correct

Submission #633268

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