답안 #1093752

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1093752	2024-09-27T11:11:26 Z	michified	Mobile (BOI12_mobile)	C++17	60 / 100	1000 ms	35156 KB

mobile

#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define lid id * 2 + 1
#define rid id * 2 + 2
using namespace std;

const ll mod = 1e9 + 7;

struct coord_t {
    ll x, y;
};

bool all(ld rad, ld l, vector<coord_t>& towers) {
    ld cur = 0, radsq = rad * rad;
    for (auto& t : towers) {
        if (t.y > rad) continue;
        ld horiz = sqrtl(radsq - (t.y * t.y));
        if (t.x - horiz > cur) continue;
        cur = max(cur, t.x + horiz);
    }
    return cur >= l;
}

int main() {
    // ifstream cin("valleys.in");
    // ofstream cout("valleys.out");
    
    ld n, L, i;
    ll tx, ty;
    cin >> n >> L;
    vector<coord_t> towers(n);
    for (i = 0; i < n; i++) {
        cin >> tx >> ty;
        towers[i] = {tx, ty};
    }
    ld l = 1, r = 1.5e9, tol = 0.001;
    while (l < r - tol) {
        ld mid = (l + r) / 2;
        if (not all(mid, L, towers)) l = mid;
        else r = mid;
    }
    cout << setprecision(10) << l;
    return 0;
}

Subtask #1
4.0 / 4.0

#	결과	메모리	Grader output
1	Correct	352 KB	Output is correct
2	Correct	352 KB	Output is correct
3	Correct	352 KB	Output is correct
4	Correct	440 KB	Output is correct

Subtask #2
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	1 ms	348 KB	Output is correct
3	Correct	0 ms	352 KB	Output is correct
4	Correct	1 ms	352 KB	Output is correct

Subtask #3
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	344 KB	Output is correct
2	Correct	2 ms	352 KB	Output is correct
3	Correct	2 ms	348 KB	Output is correct
4	Correct	2 ms	356 KB	Output is correct

Subtask #4
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	348 KB	Output is correct
2	Correct	3 ms	352 KB	Output is correct
3	Correct	2 ms	560 KB	Output is correct
4	Correct	4 ms	596 KB	Output is correct

Subtask #5
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	352 KB	Output is correct
2	Correct	3 ms	352 KB	Output is correct
3	Correct	4 ms	352 KB	Output is correct
4	Correct	6 ms	352 KB	Output is correct

Subtask #6
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	576 KB	Output is correct
2	Correct	3 ms	348 KB	Output is correct
3	Correct	3 ms	352 KB	Output is correct
4	Correct	5 ms	348 KB	Output is correct
5	Correct	4 ms	348 KB	Output is correct

Subtask #7
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	44 ms	2388 KB	Output is correct
2	Correct	46 ms	2712 KB	Output is correct
3	Correct	27 ms	1788 KB	Output is correct
4	Correct	81 ms	2780 KB	Output is correct
5	Correct	30 ms	1624 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	54 ms	2392 KB	Output is correct
2	Correct	63 ms	2136 KB	Output is correct
3	Correct	77 ms	2652 KB	Output is correct
4	Correct	84 ms	2648 KB	Output is correct
5	Correct	98 ms	3164 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	44 ms	2484 KB	Output is correct
2	Correct	50 ms	2856 KB	Output is correct
3	Correct	44 ms	2652 KB	Output is correct
4	Correct	126 ms	3892 KB	Output is correct
5	Correct	72 ms	2648 KB	Output is correct

Subtask #10
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	63 ms	3408 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	68 ms	3412 KB	Output is correct
2	Correct	60 ms	3152 KB	Output is correct
3	Correct	48 ms	2900 KB	Output is correct
4	Correct	122 ms	3916 KB	Output is correct
5	Correct	98 ms	3156 KB	Output is correct

Subtask #12
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	251 ms	12372 KB	Output is correct
2	Incorrect	296 ms	15956 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	317 ms	16436 KB	Output is correct
2	Correct	332 ms	14672 KB	Output is correct
3	Correct	252 ms	13908 KB	Output is correct
4	Correct	603 ms	17328 KB	Output is correct
5	Correct	521 ms	15532 KB	Output is correct

Subtask #14
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	304 ms	14992 KB	Output is correct
2	Incorrect	366 ms	19028 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #15
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	370 ms	19552 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #16
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	351 ms	17236 KB	Output is correct
2	Incorrect	422 ms	22100 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	440 ms	22864 KB	Output is correct
2	Correct	456 ms	20588 KB	Output is correct
3	Correct	356 ms	19536 KB	Output is correct
4	Correct	864 ms	24684 KB	Output is correct
5	Correct	710 ms	21508 KB	Output is correct

Subtask #18
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	408 ms	19796 KB	Output is correct
2	Incorrect	487 ms	25172 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #19
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	507 ms	25936 KB	Output is correct
2	Correct	526 ms	23632 KB	Output is correct
3	Correct	430 ms	22352 KB	Output is correct
4	Correct	994 ms	28304 KB	Output is correct
5	Correct	821 ms	24336 KB	Output is correct

Subtask #20
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	522 ms	24640 KB	Output is correct
2	Incorrect	651 ms	31560 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #21
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	645 ms	32596 KB	Output is correct
2	Correct	624 ms	29268 KB	Output is correct
3	Correct	536 ms	28240 KB	Output is correct
4	Execution timed out	1040 ms	35156 KB	Time limit exceeded
5	Halted	0 ms	0 KB	-

답안 #1093752

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