Submission #631182

#	Time	Username	Problem	Language	Result	Execution time	Memory
631182		smartmonky	Rack (eJOI19_rack)	C++14	40 / 100	8 ms	8604 KiB

rack

#include <bits/stdc++.h>
#define ll long long
#define pb push_back
using namespace std;
map <int,int> mp;
main(){
	int n,k;
	cin >>n >>k;
	int x=(1 << n);
	vector <int> v(x+1);
	vector <int> ans;
	v[1]=1;
	ans.pb(1);
	v[2]=x/2+1;
	ans.pb(v[2]);
	int cnt=2;
	for(int i=x/4;i>=1;i/=2){
		for(int j=1;j<=cnt;j++){
		//	cout<<cnt+j <<" ";
			v[cnt+j]=v[j]+i;
			ans.pb(v[j]+i);
		}
		cnt*=2;
	}
	//for(int i=1;i<=x;i++)
	//	cout<<v[i] <<" ";
	cout<<ans[k-1];
}

Compilation message (stderr)

rack.cpp:6:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    6 | main(){
      | ^~~~

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