답안 #1066375

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1066375	2024-08-19T19:25:49 Z	JohnnyVenturas	Mobile (BOI12_mobile)	C++17	100 / 100	839 ms	15976 KB

mobile

#include <bits/stdc++.h>

using namespace std;

const int MAXN = 1e6;

struct point {
    long long x, y;
};

point receivers[MAXN];

double first_true(double low, double high, function<bool(double)> f) {
    --low, ++high;
    double mid;
    while (high - low > 1e-3) {
        mid = low + (high - low) /2;
        if (f(mid)) {
            high = mid;
        } else {
            low = mid;
        }
    }

    return high;
}

int main() {
    int n, l;
    cin >> n >> l;

    for (int i = 0; i < n; ++i) {
        cin >> receivers[i].x >> receivers[i].y;
    }

    cout << fixed << setprecision(4) << first_true(0, 2e9, [&](double r) {
        double high = 0;

        for (int i = 0; i < n; ++i) {
            double left = receivers[i].x -
                           sqrt(r * r - receivers[i].y * receivers[i].y);
            double right =  receivers[i].x +
                           sqrt(r * r - receivers[i].y * receivers[i].y);

            if (left <= high) {
                high = max(high, right);
            }
        }

        return high >= l;
    });
}

Subtask #1
4.0 / 4.0

#	결과	메모리	Grader output
1	Correct	344 KB	Output is correct
2	Correct	348 KB	Output is correct
3	Correct	348 KB	Output is correct
4	Correct	348 KB	Output is correct

Subtask #2
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	1 ms	348 KB	Output is correct

Subtask #3
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	348 KB	Output is correct
2	Correct	1 ms	348 KB	Output is correct
3	Correct	1 ms	348 KB	Output is correct
4	Correct	2 ms	344 KB	Output is correct

Subtask #4
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	348 KB	Output is correct
2	Correct	3 ms	348 KB	Output is correct
3	Correct	3 ms	348 KB	Output is correct
4	Correct	6 ms	344 KB	Output is correct

Subtask #5
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	348 KB	Output is correct
2	Correct	3 ms	512 KB	Output is correct
3	Correct	2 ms	348 KB	Output is correct
4	Correct	4 ms	516 KB	Output is correct

Subtask #6
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	348 KB	Output is correct
2	Correct	3 ms	348 KB	Output is correct
3	Correct	2 ms	348 KB	Output is correct
4	Correct	4 ms	348 KB	Output is correct
5	Correct	5 ms	344 KB	Output is correct

Subtask #7
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	42 ms	2652 KB	Output is correct
2	Correct	39 ms	2652 KB	Output is correct
3	Correct	24 ms	2652 KB	Output is correct
4	Correct	50 ms	2648 KB	Output is correct
5	Correct	22 ms	2648 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	38 ms	2648 KB	Output is correct
2	Correct	40 ms	2652 KB	Output is correct
3	Correct	48 ms	2652 KB	Output is correct
4	Correct	69 ms	2648 KB	Output is correct
5	Correct	62 ms	2652 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	31 ms	2652 KB	Output is correct
2	Correct	40 ms	2652 KB	Output is correct
3	Correct	41 ms	2648 KB	Output is correct
4	Correct	88 ms	2652 KB	Output is correct
5	Correct	45 ms	2652 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	52 ms	2652 KB	Output is correct
2	Correct	49 ms	2652 KB	Output is correct
3	Correct	51 ms	2652 KB	Output is correct
4	Correct	76 ms	2648 KB	Output is correct
5	Correct	57 ms	2648 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	50 ms	2652 KB	Output is correct
2	Correct	48 ms	2648 KB	Output is correct
3	Correct	45 ms	2652 KB	Output is correct
4	Correct	80 ms	2660 KB	Output is correct
5	Correct	58 ms	2648 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	187 ms	8036 KB	Output is correct
2	Correct	268 ms	8784 KB	Output is correct
3	Correct	237 ms	9044 KB	Output is correct
4	Correct	386 ms	8016 KB	Output is correct
5	Correct	301 ms	8016 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	271 ms	8784 KB	Output is correct
2	Correct	320 ms	8244 KB	Output is correct
3	Correct	225 ms	8800 KB	Output is correct
4	Correct	381 ms	8028 KB	Output is correct
5	Correct	331 ms	8796 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	261 ms	10836 KB	Output is correct
2	Correct	300 ms	10064 KB	Output is correct
3	Correct	285 ms	9808 KB	Output is correct
4	Correct	450 ms	10836 KB	Output is correct
5	Correct	351 ms	10848 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	335 ms	11096 KB	Output is correct
2	Correct	380 ms	10848 KB	Output is correct
3	Correct	288 ms	11092 KB	Output is correct
4	Correct	448 ms	10852 KB	Output is correct
5	Correct	371 ms	10852 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	254 ms	11360 KB	Output is correct
2	Correct	348 ms	11344 KB	Output is correct
3	Correct	330 ms	11344 KB	Output is correct
4	Correct	525 ms	11360 KB	Output is correct
5	Correct	398 ms	11348 KB	Output is correct

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	383 ms	11344 KB	Output is correct
2	Correct	433 ms	11360 KB	Output is correct
3	Correct	316 ms	12884 KB	Output is correct
4	Correct	518 ms	12904 KB	Output is correct
5	Correct	436 ms	12892 KB	Output is correct

Subtask #18
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	291 ms	14932 KB	Output is correct
2	Correct	398 ms	14952 KB	Output is correct
3	Correct	385 ms	15188 KB	Output is correct
4	Correct	604 ms	14956 KB	Output is correct
5	Correct	477 ms	14944 KB	Output is correct

Subtask #19
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	443 ms	14932 KB	Output is correct
2	Correct	485 ms	14928 KB	Output is correct
3	Correct	366 ms	14956 KB	Output is correct
4	Correct	619 ms	14928 KB	Output is correct
5	Correct	499 ms	14944 KB	Output is correct

Subtask #20
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	365 ms	15956 KB	Output is correct
2	Correct	500 ms	15956 KB	Output is correct
3	Correct	495 ms	15964 KB	Output is correct
4	Correct	745 ms	15976 KB	Output is correct
5	Correct	590 ms	15968 KB	Output is correct

Subtask #21
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	574 ms	15972 KB	Output is correct
2	Correct	632 ms	15956 KB	Output is correct
3	Correct	514 ms	15852 KB	Output is correct
4	Correct	839 ms	15968 KB	Output is correct
5	Correct	655 ms	15972 KB	Output is correct

답안 #1066375

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