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 |
|---|---|---|---|---|---|---|---|---|---|
| #629128 | #2940. Pooling PCR Tests | Tenshi# | AC ✓ | 1ms | 3840kb | C++23 | 792b | 2024-10-11 05:31:59 | 2024-10-11 05:32:00 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
#define debug(x) cerr << #x << ": " << (x) << endl
#define rep(i,a,b) for(int i=(a);i<=(b);i++)
#define dwn(i,a,b) for(int i=(a);i>=(b);i--)
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define x first
#define y second
using pii = pair<int, int>;
using ll = long long;
inline void read(int &x){
int s=0; x=1;
char ch=getchar();
while(ch<'0' || ch>'9') {if(ch=='-')x=-1;ch=getchar();}
while(ch>='0' && ch<='9') s=(s<<3)+(s<<1)+ch-'0',ch=getchar();
x*=s;
}
signed main(){
int res=1;
double cur=1;
double p; cin>>p;
rep(n, 2, 16){
double P=1;
rep(i, 1, n) P*=(1.0-p);
double val=P*(1.0/n-1.0);
if(val<cur){
cur=val;
res=n;
}
}
cout<<res;
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 1ms
memory: 3692kb
input:
0.1
output:
4
result:
ok single line: '4'
Test #2:
score: 0
Accepted
time: 0ms
memory: 3696kb
input:
0.02
output:
8
result:
ok single line: '8'
Test #3:
score: 0
Accepted
time: 0ms
memory: 3696kb
input:
0.01
output:
10
result:
ok single line: '10'
Test #4:
score: 0
Accepted
time: 0ms
memory: 3820kb
input:
0.4
output:
2
result:
ok single line: '2'
Test #5:
score: 0
Accepted
time: 0ms
memory: 3824kb
input:
0.24
output:
3
result:
ok single line: '3'
Test #6:
score: 0
Accepted
time: 0ms
memory: 3760kb
input:
0.11
output:
4
result:
ok single line: '4'
Test #7:
score: 0
Accepted
time: 0ms
memory: 3820kb
input:
0.061
output:
5
result:
ok single line: '5'
Test #8:
score: 0
Accepted
time: 0ms
memory: 3756kb
input:
0.035
output:
6
result:
ok single line: '6'
Test #9:
score: 0
Accepted
time: 0ms
memory: 3788kb
input:
0.025
output:
7
result:
ok single line: '7'
Test #10:
score: 0
Accepted
time: 0ms
memory: 3748kb
input:
0.02
output:
8
result:
ok single line: '8'
Test #11:
score: 0
Accepted
time: 0ms
memory: 3820kb
input:
0.015
output:
9
result:
ok single line: '9'
Test #12:
score: 0
Accepted
time: 0ms
memory: 3840kb
input:
0.01
output:
10
result:
ok single line: '10'
Test #13:
score: 0
Accepted
time: 0ms
memory: 3768kb
input:
0.009
output:
11
result:
ok single line: '11'
Test #14:
score: 0
Accepted
time: 0ms
memory: 3696kb
input:
0.0075
output:
12
result:
ok single line: '12'
Test #15:
score: 0
Accepted
time: 0ms
memory: 3696kb
input:
0.006
output:
13
result:
ok single line: '13'
Test #16:
score: 0
Accepted
time: 1ms
memory: 3764kb
input:
0.0055
output:
14
result:
ok single line: '14'
Test #17:
score: 0
Accepted
time: 0ms
memory: 3768kb
input:
0.005
output:
15
result:
ok single line: '15'
Test #18:
score: 0
Accepted
time: 0ms
memory: 3772kb
input:
0.0033
output:
16
result:
ok single line: '16'
Test #19:
score: 0
Accepted
time: 0ms
memory: 3772kb
input:
0.001
output:
16
result:
ok single line: '16'