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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 |
|---|---|---|---|---|---|---|---|---|---|
| #144886 | #4196. Monty's Hall | OneWan | AC ✓ | 1ms | 3828kb | C++20 | 563b | 2023-08-21 19:39:39 | 2023-08-21 19:39:40 |
Judging History
answer
// Problem: I - Monty's Hall
// Contest: Virtual Judge - Namomo Summer Camp 23 Day 1
// URL: https://vjudge.net/contest/576636#problem/I
// Memory Limit: 2028 MB
// Time Limit: 1000 ms
#include <bits/stdc++.h>
using namespace std;
// 2023 OneWan
int main() {
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int d, s, e;
cin >> d >> s >> e;
long double ans;
if (d >= 2 * s + e) {
ans = 1.0 * s * (d - s) / (1.0 * d * (d - e - s));
} else {
ans = 1.0 * (s + e) / d;
}
cout << fixed << setprecision(9) << ans;
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 1ms
memory: 3732kb
input:
3 1 1
output:
0.666666667
result:
ok found '0.6666667', expected '0.6666670', error '0.0000003'
Test #2:
score: 0
Accepted
time: 1ms
memory: 3728kb
input:
8 4 2
output:
0.750000000
result:
ok found '0.7500000', expected '0.7500000', error '0.0000000'
Test #3:
score: 0
Accepted
time: 1ms
memory: 3716kb
input:
15 4 2
output:
0.325925926
result:
ok found '0.3259259', expected '0.3259259', error '0.0000000'
Test #4:
score: 0
Accepted
time: 1ms
memory: 3828kb
input:
1000000 1 1
output:
0.000001000
result:
ok found '0.0000010', expected '0.0000010', error '0.0000000'
Test #5:
score: 0
Accepted
time: 1ms
memory: 3760kb
input:
1000000 999998 1
output:
0.999999000
result:
ok found '0.9999990', expected '0.9999990', error '0.0000000'
Test #6:
score: 0
Accepted
time: 1ms
memory: 3676kb
input:
1000000 1 999998
output:
0.999999000
result:
ok found '0.9999990', expected '0.9999990', error '0.0000000'
Test #7:
score: 0
Accepted
time: 1ms
memory: 3720kb
input:
78 39 18
output:
0.730769231
result:
ok found '0.7307692', expected '0.7307692', error '0.0000000'
Test #8:
score: 0
Accepted
time: 0ms
memory: 3740kb
input:
95 67 2
output:
0.726315789
result:
ok found '0.7263158', expected '0.7263158', error '0.0000000'
Test #9:
score: 0
Accepted
time: 0ms
memory: 3656kb
input:
132 37 42
output:
0.502429960
result:
ok found '0.5024300', expected '0.5024300', error '0.0000000'
Test #10:
score: 0
Accepted
time: 0ms
memory: 3736kb
input:
358 286 67
output:
0.986033520
result:
ok found '0.9860335', expected '0.9860335', error '0.0000000'
Test #11:
score: 0
Accepted
time: 1ms
memory: 3604kb
input:
507 268 214
output:
0.950690335
result:
ok found '0.9506903', expected '0.9506903', error '0.0000000'
Test #12:
score: 0
Accepted
time: 1ms
memory: 3724kb
input:
307521 21170 77603
output:
0.094432712
result:
ok found '0.0944327', expected '0.0944327', error '0.0000000'
Test #13:
score: 0
Accepted
time: 0ms
memory: 3672kb
input:
801885 303025 80078
output:
0.450149784
result:
ok found '0.4501498', expected '0.4501498', error '0.0000000'
Test #14:
score: 0
Accepted
time: 1ms
memory: 3828kb
input:
841840 457853 312238
output:
0.914771215
result:
ok found '0.9147712', expected '0.9147712', error '0.0000000'
Test #15:
score: 0
Accepted
time: 1ms
memory: 3716kb
input:
141716 97110 2985
output:
0.706306980
result:
ok found '0.7063070', expected '0.7063070', error '0.0000000'
Test #16:
score: 0
Accepted
time: 1ms
memory: 3648kb
input:
107479 105123 477
output:
0.982517515
result:
ok found '0.9825175', expected '0.9825175', error '0.0000000'