#include <bits/stdc++.h>
using namespace std;
string s(899, 'A');
double f(int len) {
return 1.00*(len/2)*(len/2-1)/2;
}
int main() {
cin >> s;
cout << fixed << setprecision(3);
if(s.size() & 1) {
cout << (f(s.size()-1) + f(s.size()+1))/2.00;
} else {
cout << f(s.size());
}
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
found '100800.5000000000', expected '100800.5000000000', error '0.0000000000' |
2 |
Correct |
0 ms |
212 KB |
found '0.0000000000', expected '0.0000000000', error '-0.0000000000' |
3 |
Correct |
0 ms |
212 KB |
found '0.0000000000', expected '0.0000000000', error '-0.0000000000' |
4 |
Correct |
0 ms |
212 KB |
found '1.0000000000', expected '1.0000000000', error '0.0000000000' |
5 |
Correct |
0 ms |
212 KB |
found '124002.0000000000', expected '124002.0000000000', error '0.0000000000' |
6 |
Correct |
1 ms |
468 KB |
found '772893586.0000000000', expected '772893586.0000000000', error '0.0000000000' |
7 |
Correct |
2 ms |
468 KB |
found '1100977812.5000000000', expected '1100977812.5000000000', error '0.0000000000' |
8 |
Correct |
2 ms |
468 KB |
found '1249950000.5000000000', expected '1249950000.5000000000', error '0.0000000000' |
9 |
Correct |
2 ms |
468 KB |
found '1249975000.0000000000', expected '1249975000.0000000000', error '0.0000000000' |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
0 ms |
212 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 |
212 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 |
Correct |
0 ms |
212 KB |
found '100800.5000000000', expected '100800.5000000000', error '0.0000000000' |
2 |
Correct |
0 ms |
212 KB |
found '0.0000000000', expected '0.0000000000', error '-0.0000000000' |
3 |
Correct |
0 ms |
212 KB |
found '0.0000000000', expected '0.0000000000', error '-0.0000000000' |
4 |
Correct |
0 ms |
212 KB |
found '1.0000000000', expected '1.0000000000', error '0.0000000000' |
5 |
Correct |
0 ms |
212 KB |
found '124002.0000000000', expected '124002.0000000000', error '0.0000000000' |
6 |
Correct |
1 ms |
468 KB |
found '772893586.0000000000', expected '772893586.0000000000', error '0.0000000000' |
7 |
Correct |
2 ms |
468 KB |
found '1100977812.5000000000', expected '1100977812.5000000000', error '0.0000000000' |
8 |
Correct |
2 ms |
468 KB |
found '1249950000.5000000000', expected '1249950000.5000000000', error '0.0000000000' |
9 |
Correct |
2 ms |
468 KB |
found '1249975000.0000000000', expected '1249975000.0000000000', error '0.0000000000' |
10 |
Incorrect |
0 ms |
212 KB |
1st numbers differ - expected: '1.0000000000', found: '3.0000000000', error = '2.0000000000' |
11 |
Halted |
0 ms |
0 KB |
- |