QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #748510 | #9746. 平方根 | isAKnoya# | AC ✓ | 6ms | 4340kb | C++23 | 402b | 2024-11-14 20:36:16 | 2024-11-14 20:36:17 |
Judging History
answer
#include<bits/stdc++.h>
using std::cin,std::cerr,std::cout;
#define all(c) std::begin(c),std::end(c)
signed main(){
cin.tie(0)->sync_with_stdio(0);
std::string s;
cin>>s;
double ans=0,a=std::sqrt(2)-1;
for(int i=0;i<ssize(s);++i)if(s[i]=='1'){
int r=s.find('0',i);
if(r==s.npos)r=ssize(s);
ans+=(r-i+1)/2;
if(!((r-i)&1)){
ans+=a;
}
i=r;
}
printf("%.10lf",ans);
}
这程序好像有点Bug，我给组数据试试？
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 3896kb
input:
1100110111
output:
4.8284271247
result:
ok found '4.828427125', expected '4.828427125', error '0.000000000'
Test #2:
score: 0
Accepted
time: 0ms
memory: 3980kb
input:
0
output:
0.0000000000
result:
ok found '0.000000000', expected '0.000000000', error '-0.000000000'
Test #3:
score: 0
Accepted
time: 0ms
memory: 3684kb
input:
1
output:
1.0000000000
result:
ok found '1.000000000', expected '1.000000000', error '0.000000000'
Test #4:
score: 0
Accepted
time: 2ms
memory: 4136kb
input:
000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
output:
0.0000000000
result:
ok found '0.000000000', expected '0.000000000', error '-0.000000000'
Test #5:
score: 0
Accepted
time: 2ms
memory: 4116kb
input:
111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111...
output:
500000.4142135624
result:
ok found '500000.414213562', expected '500000.414213562', error '0.000000000'
Test #6:
score: 0
Accepted
time: 6ms
memory: 4164kb
input:
010101111011001000011101100000011110101010000110011110101010111011010011100001100000001011100111110000100101100011101101000100110100111101001100011000101000000101011101000011011001111011101101100010110110001111011001010100110011111101000010010011011101100001101001101010011011100110101001101111010101...
output:
367851.9867876115
result:
ok found '367851.986787612', expected '367851.986787086', error '0.000000000'
Test #7:
score: 0
Accepted
time: 2ms
memory: 4340kb
input:
000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
output:
299931.3137084990
result:
ok found '299931.313708499', expected '299931.313708499', error '0.000000000'
Extra Test:
score: 0
Extra Test Passed