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#include <bits/stdc++.h>
using namespace std;
int main(){
int m,n;
while(cin >> m >> n){
queue<int> q;
int sum = 0;
q.push(m);
while(!q.empty()){
int num = q.front();
q.pop();
sum++;
if(num * 2 <= n) q.push(num*2);
if(num * 2 + 1 <= n) q.push(num*2+1);
}
cout << sum << endl;
}
return 0;
}
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