n = int(input())
l = 1
r = 2 * 10**50
while l <= r:
m = (l + r) // 2
if((m + 1) * m // 2 >= n):
r = m - 1
else:
l = m + 1
r += 1
print(2 * n - r)
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
10 ms |
2908 KB |
Output is correct |
2 |
Correct |
11 ms |
2928 KB |
Output is correct |
3 |
Correct |
12 ms |
2728 KB |
Output is correct |
4 |
Correct |
10 ms |
2908 KB |
Output is correct |
5 |
Correct |
10 ms |
2712 KB |
Output is correct |
6 |
Correct |
10 ms |
2920 KB |
Output is correct |
7 |
Correct |
10 ms |
2908 KB |
Output is correct |
8 |
Correct |
11 ms |
2908 KB |
Output is correct |
9 |
Correct |
10 ms |
2908 KB |
Output is correct |
10 |
Correct |
11 ms |
2908 KB |
Output is correct |
11 |
Correct |
10 ms |
2748 KB |
Output is correct |
12 |
Correct |
10 ms |
2788 KB |
Output is correct |
13 |
Correct |
10 ms |
2908 KB |
Output is correct |
14 |
Correct |
10 ms |
2908 KB |
Output is correct |
15 |
Correct |
11 ms |
2908 KB |
Output is correct |
16 |
Correct |
10 ms |
2908 KB |
Output is correct |
17 |
Correct |
12 ms |
2720 KB |
Output is correct |
18 |
Correct |
11 ms |
2908 KB |
Output is correct |
19 |
Correct |
11 ms |
2908 KB |
Output is correct |
20 |
Correct |
10 ms |
2908 KB |
Output is correct |
21 |
Correct |
10 ms |
2908 KB |
Output is correct |
22 |
Correct |
10 ms |
2728 KB |
Output is correct |