Submission #269779

#	Time	Username	Problem	Language	Result	Execution time	Memory
269779		JuliusMieliauskas	Rack (eJOI19_rack)	C++14	40 / 100	1 ms	384 KiB

rack

#include <bits/stdc++.h>

using namespace std;

#define all(x) x.begin(), x.end()
#define vi vector<int>
#define vll vector<long long>
#define MOD 1000000007
#define endl '\n'

typedef long long ll;

void print(vi v){
    cout<<"Contents of vector:\n";
    for(auto x : v) cout<<x<<" ";
    cout<<endl<<endl;
}

void solve(){
    ll n, k; cin>>n>>k;

    int l = 1, r = min((long long)pow(2, n), LLONG_MAX);
    while(true){
        if(r - l == 0) break;

        int mid = (r+l) / 2;
        //cout<<"l: "<<l<<"  r: "<<r<<"  mid: "<<mid<<endl;
        if(k%2){
            r = mid;
        } else {
            l = mid;
        }

        k = ceil(k*1.0 / 2.0);
    }
    cout<<r+1%MOD<<endl;
}

int main() {
    ios_base::sync_with_stdio(false); cin.tie(nullptr);
    //ifstream cin("input.txt"); ofstream cout("output.txt");///cia failai

    //int T; cin>>T;
    int T = 1;

    for(int it = 1; it<=T; it++){
        solve();

    }
}

• Subtask 1: 20 / 20
• Subtask 2: 20 / 20
• Subtask 3: 0 / 60