Submission #2136664

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define rep(i,n)   FOR(i,0,n)
#define pb push_back
#define mp make_pair
typedef long long ll;
typedef pair<int,int> pint;

int main(){
    int n,s,t;
    cin>>n>>s>>t;
    int cnt=0;
    while(s<=t){
        if(s==t){
            cout<<cnt<<endl;
            return 0;
        }
        t/=2;++cnt;
    }
    cout<<-1<<endl;
    return 0;
}

Submission Info

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