Submission #1097239

#	Time	Username	Problem	Language	Result	Execution time	Memory
1097239		vjudge1	Rack (eJOI19_rack)	C++17	40 / 100	0 ms	408 KiB

rack

#include <bits/stdc++.h>
using namespace std;
#define ll long long int

int main(){
  ios_base::sync_with_stdio(false);
  cin.tie(0);
    ll n,k;
    cin >> k>>n;
    k=min(k,61LL);
    vector<ll>a(k,0);
    n--;
    ll i =0 ;
    while(n>0){
      a[i]=n%2;
      n/=2;
      i++;
    }reverse(a.begin(),a.end());
    ll x = 0;
    ll act = 1;
    for(ll i=0;i<a.size();i++){
      if(a[i]!=0)x+=act*a[i];
      act*=2;
    }cout << x+1 << endl;
  
  return 0;
}

Compilation message (stderr)

rack.cpp: In function 'int main()':
rack.cpp:21:17: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |     for(ll i=0;i<a.size();i++){
      |                ~^~~~~~~~~

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