Submission #284427

#	Time	Username	Problem	Language	Result	Execution time	Memory
284427		lukameladze	Rack (eJOI19_rack)	C++14	40 / 100	135 ms	102404 KiB

rack

# include <bits/stdc++.h>
using namespace std;
long long n,k,pw[1000005],x,ww;
vector <long long> v;
int main()
{
     cin>>n>>k;
     pw[0]=1;
     for (int i=1; i<=n; i++)
     pw[i]=pw[i-1]*2;
     v.push_back(1);
     v.push_back(pw[n-1]+1);
     x=(n-1);
     if (k<=2)
     {
          cout<<v[k-1]<<endl;
          return 0;
     }
     while (true)
     {
     	x--;
     	ww=v.size();
     	for (int i=0; i<ww; i++)
     	{
     		v.push_back(v[i]+pw[x]);
     	//	cout<<v[i]<<" "<<pw[x]<<endl;
		}
		if (v.size()>=k) break;
	 }
	 cout<<v[k-1]<<endl;
}

Compilation message (stderr)

rack.cpp: In function 'int main()':
rack.cpp:28:15: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   28 |   if (v.size()>=k) break;
      |       ~~~~~~~~^~~

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