#include <bits/stdc++.h>
#define ld long double
#define ll long long
#define sz size()
#define all(xx) xx.begin(),xx.end()
#define pb push_back
#define in insert
#define er erase
#define S second
#define F first
#define pii pair <int, int>
#define to_be continue
#define mp make_pair
#define stop exit (0)
#define fname ""
#define speed ios_base::sync_with_stdio(0);cin.tie(0)
#define input freopen (fname".in", "r", stdin)
#define output freopen (fname".out", "w", stdout)
//#define int ll
#define N 600000
using namespace std;
const int inf = 1e9 + 123;
const ll INF = 1e18 + 123;
const double pi = acos (-1.0);
const ld eps = 1e-3;
int a, b, ans;
int main ()
{
speed;
cin >> a >> b;
for (int i = 1; i <= 1e7; i ++)
{
// cout << ((b / i - 1) - max (((a - 1) / i - 1), 0)) << endl;
ans += i * ((b / i - 1) - max (((a - 1) / i - 1), 0));
if (((b / i - 1)) < 1)
break;
}
cout << abs ((a + b) * (b - a + 1) / 2 - ans);
}
//Coded by A....
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
| 2 |
Incorrect |
2 ms |
508 KB |
Output isn't correct |
| 3 |
Incorrect |
3 ms |
508 KB |
Output isn't correct |
| 4 |
Incorrect |
47 ms |
508 KB |
Output isn't correct |
| 5 |
Incorrect |
46 ms |
628 KB |
Output isn't correct |
| 6 |
Incorrect |
46 ms |
628 KB |
Output isn't correct |
| 7 |
Incorrect |
43 ms |
628 KB |
Output isn't correct |
| 8 |
Incorrect |
14 ms |
628 KB |
Output isn't correct |
