#include <bits/stdc++.h>
#define FOR( i, x, n, d ) for( int i = x; i <= n; i += d )
#define int long long
using namespace std;
const int N = 1e5;
signed main()
{
ios_base::sync_with_stdio(0), cin.tie(0);
int n; cin >> n;
int ans = 0;
for( int i = 0; n > 0; i ++ )
{
if( i >= n ) ans += ( n - 1 ) * 2 + 1, n = 0;
else n -= i + 1, ans += i * 2 + 1;
}
cout << ans;
}
// n i ans
// 3 0 1
// 1 1 3
//
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
2 ms |
348 KB |
Output is correct |
8 |
Correct |
9 ms |
348 KB |
Output is correct |
9 |
Correct |
21 ms |
348 KB |
Output is correct |
10 |
Correct |
71 ms |
348 KB |
Output is correct |
11 |
Correct |
280 ms |
348 KB |
Output is correct |
12 |
Correct |
593 ms |
348 KB |
Output is correct |
13 |
Execution timed out |
2064 ms |
344 KB |
Time limit exceeded |
14 |
Halted |
0 ms |
0 KB |
- |