10718.cpp

#include <iostream>
#include <cstdio>
using namespace std;

typedef long long ll;

int main(){
 ll N,U,L,ans;
 while(scanf("%lld %lld %lld",&N,&L,&U)!=EOF){
  ans = 0;
  for(int i=0;i<=32;++i){
   ll state = (N & (1L<<(32-i)));
   //printf("%lld\n", state);
   //printf("%lld\n", ans);
   if(state){
    //if the bit is set
    //if not setting this bit can still fulfill the constraint
    ll temp = state -1;
    temp |= ans;
    if(temp < L){
     ans |= state;
    }
   } else {
    //if not set, should set if fulfill constraint
    ll temp = ans;
    temp |= (1L<<(32-i));
    if(temp <= U){
     ans = temp;
    }
   }
  }
  printf("%lld\n",ans);
 }
 return 0;
}