#include <cstdio>
#include <cstring>
#include <iostream>
#include <string>
#include <cmath>
#include <bitset>
#include <vector>
#include <map>
#include <set>
#include <queue>
#include <deque>
#include <algorithm>
#include <complex>
#include <unordered_map>
#include <unordered_set>
#include <random>
#include <cassert>
#include <fstream>
#include <utility>
#include <functional>
#include <time.h>
#include <stack>
#include <array>
#define popcount __builtin_popcount
using namespace std;
typedef long long int ll;
typedef pair<int, int> P;
const ll MOD=1e9+7;
int main()
{
	int n;
	ll l, r;
	cin>>n>>l>>r;
	ll dp[60][100010]={};
	dp[0][n]=1;
	for(int i=n-1; i>=1; i--){
		for(int j=0; j<60; j++){
			(dp[j][i]+=dp[j][i+1]*(n-1-i))%=MOD;
			if(j<59) (dp[j+1][i]+=dp[j][i+1])%=MOD;
		}
	}
	ll c0=n-1;
	for(int i=1; i<=n-1; i++) (c0*=i)%=MOD;
	ll ans=(l?0:c0);
	for(int i=1; i<60; i++){
		if((1ll<<i)<l || r<(1ll<<i)) continue;
		(ans+=dp[i][1])%=MOD;
	}
	cout<<ans<<endl;
	return 0;
}