Number 1

/*
              9
      4       1       4
  2   0   2   1   2   0   2
1 0 1 0 1 0 1 1 1 0 1 0 1 0 1

      7
  3   1   3
1 1 1 1 1 1 1
*/
/*
    Task    : _example
    Author  : Phumipat C. [MAGCARI]
    Language: C++
    Created : 19 February 2023 [10:59]
*/
#include<bits/stdc++.h>
using namespace std;
int divide(int leftBoundary,int rightBoundary,int number,int leftConsidering,int rightConsidering){
    if(rightBoundary < leftConsidering || leftBoundary > rightConsidering)  return 0;
    if(number <= 1) return number;
    int mid = (leftBoundary+rightBoundary-1)/2;
    int leftResult = divide(leftBoundary,mid,number/2,leftConsidering,rightConsidering);
    int middleResult = divide(mid+1,mid+1,number%2,leftConsidering,rightConsidering);
    int rightResult = divide(mid+2,rightBoundary,number/2,leftConsidering,rightConsidering);
    return leftResult + middleResult + rightResult;
}
int main(){
    int startNumber,l,r;
    scanf("%d %d %d",&startNumber,&l,&r);
    int n = 1;
    while(n < startNumber)  n = (2*n) + 1;
    printf("%d\n",divide(1,n,startNumber,l,r));
    return 0;
}