#include <bits/stdc++.h>
using namespace std;
int main()
{
ios_base::sync_with_stdio(0);
cin.tie(0);
string s;
cin >> s;
int n=s.size();
int x=n/2;
int y=(n+1)/2;
cout << (double)x*(x-1)/4+(double)y*(y-1)/4;
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
344 KB |
1st numbers differ - expected: '100800.5000000000', found: '100800.0000000000', error = '0.0000049603' |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
0 ms |
344 KB |
1st numbers differ - expected: '1.0000000000', found: '3.0000000000', error = '2.0000000000' |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
0 ms |
344 KB |
1st numbers differ - expected: '1.0000000000', found: '3.0000000000', error = '2.0000000000' |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
344 KB |
1st numbers differ - expected: '100800.5000000000', found: '100800.0000000000', error = '0.0000049603' |
2 |
Halted |
0 ms |
0 KB |
- |