数据有点水

#define int long long
using namespace std;
signed main(){
	//freopen(".in","r",stdin);
	//freopen(".out","w",stdout);
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int n,l,r,ans=0;
	cin>>n>>l>>r;
	int dis=r-l+1;
	if(dis>=n){
		cout<<n-1;
		return 0;
	}
	int f=r%n;
	if(l==r||dis<=f){
		cout<<f;
		return 0;
	}
	cout<<n-1;
	return 0;
}