답안 #1093736

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1093736	2024-09-27T10:56:14 Z	michified	Mobile (BOI12_mobile)	C++17	50 / 100	1000 ms	46476 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 {
    ld 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, 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 = 0, r = 2e9, tol = 0.0001;
    while (l < r - tol) {
        ld mid = (l + r) / 2;
        if (not all(mid, L, towers)) l = mid;
        else r = mid - tol;
    }
    cout << setprecision(10) << l;
    return 0;
}

Subtask #1
4.0 / 4.0

#	결과	메모리	Grader output
1	Correct	348 KB	Output is correct
2	Correct	348 KB	Output is correct
3	Correct	344 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	436 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	3 ms	344 KB	Output is correct
2	Correct	2 ms	552 KB	Output is correct
3	Correct	3 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	7 ms	600 KB	Output is correct
2	Correct	5 ms	604 KB	Output is correct
3	Correct	4 ms	600 KB	Output is correct
4	Correct	6 ms	684 KB	Output is correct

Subtask #5
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	600 KB	Output is correct
2	Correct	5 ms	604 KB	Output is correct
3	Correct	5 ms	604 KB	Output is correct
4	Correct	6 ms	604 KB	Output is correct

Subtask #6
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	604 KB	Output is correct
2	Correct	4 ms	600 KB	Output is correct
3	Correct	4 ms	604 KB	Output is correct
4	Correct	6 ms	604 KB	Output is correct
5	Correct	4 ms	604 KB	Output is correct

Subtask #7
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	59 ms	3420 KB	Output is correct
2	Correct	62 ms	3548 KB	Output is correct
3	Correct	70 ms	2624 KB	Output is correct
4	Correct	98 ms	3412 KB	Output is correct
5	Correct	45 ms	2140 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	80 ms	3392 KB	Output is correct
2	Correct	82 ms	3420 KB	Output is correct
3	Correct	100 ms	3744 KB	Output is correct
4	Correct	112 ms	3668 KB	Output is correct
5	Correct	124 ms	4132 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	73 ms	3688 KB	Output is correct
2	Correct	68 ms	3664 KB	Output is correct
3	Correct	80 ms	3644 KB	Output is correct
4	Correct	164 ms	4824 KB	Output is correct
5	Correct	106 ms	3752 KB	Output is correct

Subtask #10
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	95 ms	4432 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	119 ms	4488 KB	Output is correct
2	Correct	94 ms	4432 KB	Output is correct
3	Correct	108 ms	4328 KB	Output is correct
4	Correct	150 ms	4728 KB	Output is correct
5	Correct	136 ms	4176 KB	Output is correct

Subtask #12
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	381 ms	18316 KB	Output is correct
2	Incorrect	440 ms	20008 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	425 ms	20252 KB	Output is correct
2	Correct	431 ms	19480 KB	Output is correct
3	Correct	357 ms	19024 KB	Output is correct
4	Correct	690 ms	20820 KB	Output is correct
5	Correct	590 ms	19792 KB	Output is correct

Subtask #14
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	459 ms	22032 KB	Output is correct
2	Incorrect	505 ms	23956 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #15
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	514 ms	24136 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #16
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	506 ms	25428 KB	Output is correct
2	Incorrect	616 ms	28048 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #17
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	708 ms	29332 KB	Output is correct
2	Correct	622 ms	29772 KB	Output is correct
3	Correct	520 ms	29004 KB	Output is correct
4	Execution timed out	1012 ms	32796 KB	Time limit exceeded
5	Halted	0 ms	0 KB	-

Subtask #18
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	620 ms	31008 KB	Output is correct
2	Incorrect	680 ms	35076 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #19
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	683 ms	35668 KB	Output is correct
2	Correct	707 ms	33824 KB	Output is correct
3	Correct	590 ms	33132 KB	Output is correct
4	Execution timed out	1040 ms	37372 KB	Time limit exceeded
5	Halted	0 ms	0 KB	-

Subtask #20
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	730 ms	38484 KB	Output is correct
2	Incorrect	883 ms	43756 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #21
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	843 ms	44540 KB	Output is correct
2	Correct	851 ms	42064 KB	Output is correct
3	Correct	748 ms	41160 KB	Output is correct
4	Execution timed out	1020 ms	46476 KB	Time limit exceeded
5	Halted	0 ms	0 KB	-

답안 #1093736

Compilation message