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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 |
---|---|---|---|---|---|---|---|---|---|
#709147 | #8022. Walker | UESTC_DECAYALI# | WA | 33ms | 3948kb | C++20 | 1.0kb | 2024-11-04 12:16:44 | 2024-11-04 12:16:45 |
Judging History
answer
#include <bits/stdc++.h>
int _;
double solve() {
double n, p1, v1, p2, v2;
_ = scanf("%lf%lf%lf%lf%lf", &n, &p1, &v1, &p2, &v2);
if(p1 > p2) std::swap(p1, p2), std::swap(v1, v2);
p2 = n - p2;
double ans = std::min({
(n + p1) / v1,
(n + n - p1) / v1,
(n + p2) / v2,
(n + n - p2) / v2,
std::max((n - p1) / v2, (n - p2) / v1),
});
auto check = [&](double T) {
if(T * v1 < p1 || T * v2 < p2) return false;
double l1 = std::max(p1 + (T - p1 / v1) * (0.5 * v1), p1 + (T - 2 * p1 / v1) * v1);
double l2 = std::max(p2 + (T - p2 / v2) * (0.5 * v2), p2 + (T - 2 * p2 / v2) * v2);
return l1 + l2 >= n;
};
double l = 0, r = n * 4000;
for(_ = 0; _ < 200; ++_) {
double mid = (l + r) / 2.0;
if(check(mid)) r = mid;
else l = mid;
}
return std::min(ans, l);
}
int main() {
int T; _ = scanf("%d", &T); while(T--) printf("%.10lf\n", solve());
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3940kb
input:
2 10000.0 1.0 0.001 9999.0 0.001 4306.063 4079.874 0.607 1033.423 0.847
output:
5000999.9999999991 3827.8370013755
result:
ok 2 numbers
Test #2:
score: 0
Accepted
time: 0ms
memory: 3876kb
input:
1 10.0 1.0 10.0 9.0 0.1
output:
1.1000000000
result:
ok found '1.1000000', expected '1.1000000', error '0.0000000'
Test #3:
score: 0
Accepted
time: 0ms
memory: 3944kb
input:
1 10.0 8.0 10.0 9.0 0.1
output:
1.2000000000
result:
ok found '1.2000000', expected '1.2000000', error '0.0000000'
Test #4:
score: 0
Accepted
time: 0ms
memory: 3888kb
input:
1 10.0 8.0 0.1 9.0 10
output:
1.1000000000
result:
ok found '1.1000000', expected '1.1000000', error '0.0000000'
Test #5:
score: 0
Accepted
time: 0ms
memory: 3948kb
input:
1 10.0 2.0 0.1 3.0 10
output:
1.3000000000
result:
ok found '1.3000000', expected '1.3000000', error '0.0000000'
Test #6:
score: 0
Accepted
time: 0ms
memory: 3872kb
input:
1 10.0 9.0 0.1 8.0 10.0
output:
1.2000000000
result:
ok found '1.2000000', expected '1.2000000', error '0.0000000'
Test #7:
score: 0
Accepted
time: 0ms
memory: 3940kb
input:
1 10.0 4.0 0.1 6.0 0.1
output:
60.0000000000
result:
ok found '60.0000000', expected '60.0000000', error '0.0000000'
Test #8:
score: 0
Accepted
time: 0ms
memory: 3944kb
input:
1 10.0 4.5 0.1 6.0 0.1
output:
57.5000000000
result:
ok found '57.5000000', expected '57.5000000', error '0.0000000'
Test #9:
score: 0
Accepted
time: 0ms
memory: 3884kb
input:
1 10.0 1.0 1.0 8.0 1.0
output:
6.5000000000
result:
ok found '6.5000000', expected '6.5000000', error '0.0000000'
Test #10:
score: 0
Accepted
time: 0ms
memory: 3872kb
input:
1 10.0 3.0 2.0 7.0 1.0
output:
4.6000000000
result:
ok found '4.6000000', expected '4.6000000', error '0.0000000'
Test #11:
score: 0
Accepted
time: 0ms
memory: 3880kb
input:
1 10.0 6.0 2.0 7.0 1.0
output:
3.6666666667
result:
ok found '3.6666667', expected '3.6666667', error '0.0000000'
Test #12:
score: 0
Accepted
time: 0ms
memory: 3888kb
input:
1 10.0 1.0 1.0 9.0 1.0
output:
6.0000000000
result:
ok found '6.0000000', expected '6.0000000', error '0.0000000'
Test #13:
score: 0
Accepted
time: 0ms
memory: 3860kb
input:
1 10000.0 1.0 0.001 1.0 0.001
output:
9998999.9999999981
result:
ok found '9999000.0000000', expected '9999000.0000000', error '0.0000000'
Test #14:
score: 0
Accepted
time: 0ms
memory: 3880kb
input:
1 10.0 5.0 1.0 5.0 1.5
output:
5.0000000000
result:
ok found '5.0000000', expected '5.0000000', error '0.0000000'
Test #15:
score: -100
Wrong Answer
time: 33ms
memory: 3792kb
input:
10000 4306.063 4079.874 0.607 1033.423 0.847 8967.336 8026.500 0.398 283.019 0.876 9568.147 4481.616 0.405 800.114 0.684 9867.264 6184.040 0.312 9853.164 0.641 3344.364 730.612 0.539 1305.868 0.947 9336.180 3672.113 0.773 432.686 0.312 1468.243 59.762 0.840 1438.446 0.827 1355.133 1096.314 0.373 109...
output:
3827.8370013755 7999.3649921507 12559.3358024691 15415.5444617785 2637.6985195155 9931.0415175376 934.4943011398 4326.9490616622 5754.0328898744 2847.4271570014 10975.3236282195 2902.1791044776 24531.5363636364 6278.1035548686 1030.0000000000 10734.3956442831 1005.0770288858 24249.7467811159 9878.00...
result:
wrong answer 4th numbers differ - expected: '15371.5507020', found: '15415.5444618', error = '0.0028620'