QOJ.ac

QOJ

ID	题目	提交者	结果	用时	内存	语言	文件大小	提交时间	测评时间
#611910	#8022. Walker	LJY_ljy	WA	1ms	3924kb	C++11	1.1kb	2024-10-05 00:05:06	2024-10-05 00:05:08

Judging History

你现在查看的是最新测评结果

[2024-10-05 00:05:08]
评测

测评结果：WA
用时：1ms
内存：3924kb

查看

[2024-10-05 00:05:06]
提交

answer

#include <iostream>
#include <cstdio>
#include <cstring>
#include <algorithm>
using namespace std;

const double eps = 1e-7;
const double INF = 1e10;
double n, p1, v1, p2, v2;

int main() {
	int t; scanf("%d", &t);
	for (int u = 1; u <= t; u++) {
		scanf("%lf %lf %lf %lf %lf", &n, &p1, &v1, &p2, &v2);
		if (p1 > p2) {
			swap(p1, p2);
			swap(v1, v2);
		}
		double l = 0, r = INF;
		while (r - l > eps) {
			double mid = (r + l) / 2;
			double S1 = mid * v1, S2 = mid * v2;
			bool flag = false;
			// LL
			if (S1 >= 2 * n + p1 - p2 || S2 >= 2 * n) flag = true;
			// RR
			if (S1 >= 2 * n || S2 >= 2 * n + p1 - p2) flag = true;
			// LR
			if (S1 >= n + p1) flag = true;
			if (S1 >= p1 + p2 && S1 < n + p1 && S2 >= n - p2) flag = true;
			if (S1 < p1 + p2 && S1 + S2 >= 2 * n + p1 - p2) flag = true;
			// RL
			if (S1 >= n - p1 && S2 >= p2) flag = true;
			if (S1 < n - p1 && S2 >= p2 + n) flag = true;
			if (S2 < p2 && S1 >= 2 * n - p1) flag = true;
			if (flag) r = mid;
			else l = mid;
		}
		printf("%.10lf\n", l);
	}
	return 0;
}

源文件, 语言: C++11

详细

Test #1:

score: 100

Accepted

time: 1ms

memory: 3924kb

input:

2
10000.0 1.0 0.001 9999.0 0.001
4306.063 4079.874 0.607 1033.423 0.847

output:

5000999.9999999627
3827.8370013273

result:

ok 2 numbers

Test #2:

score: 0

Accepted

time: 1ms

memory: 3860kb

input:

1
10.0 1.0 10.0 9.0 0.1

output:

1.0999999522

result:

ok found '1.1000000', expected '1.1000000', error '0.0000000'

Test #3:

score: 0

Accepted

time: 1ms

memory: 3816kb

input:

1
10.0 8.0 10.0 9.0 0.1

output:

1.1999999605

result:

ok found '1.2000000', expected '1.2000000', error '0.0000000'

Test #4:

score: -100

Wrong Answer

time: 1ms

memory: 3872kb

input:

1
10.0 8.0 0.1 9.0 10

output:

1.8811880526

result:

wrong answer 1st numbers differ - expected: '1.1000000', found: '1.8811881', error = '0.7101710'