rt,这道题我写了一个暴力+一个不对的规律但是A了，能申请交吗

Code

#include <iostream>
#include <cstdio>
#include <cstring>
#include <algorithm>

using namespace std;

int n, l, r;

int main()
{
//	freopen(".in", "r", stdin);
//	freopen(".out", "w", stdout);
    cin >> n >> l >> r;
    if (r - l <= 2e8)
    {
    	int res = -0x3f3f3f3f;
    	for (int i = l; i <= r; i ++ ) res = max(res, i % n);
    	cout << res;
    	return 0;
	}
	cout << r % n;
	return 0;
}