Submission #285690

#	Time	Username	Problem	Language	Result	Execution time	Memory
285690		wildturtle	Rack (eJOI19_rack)	C++14	40 / 100	130 ms	102404 KiB

rack

#include<bits/stdc++.h>
using namespace std;
long long a,b,c,d,i,e,f,g,n,m,k,l,X[500005],x;
vector <long long> v;
int main() {
    cin>>n>>k;
    X[0]=1;
    for(long long i=1;i<=n;i++) {
        X[i]=X[i-1]*2;
    }
    if(k==1) { cout<<1; return 0; }
    v.push_back(1);
    x=n;
    while(true) {
        x--;
        a=v.size();
        for(long long i=0;i<a;i++) {
            v.push_back(v[i]+X[x]);
        }
        if(v.size()>=k) break;
    }
    cout<<v[k-1];
}

Compilation message (stderr)

rack.cpp: In function 'int main()':
rack.cpp:20:20: 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]
   20 |         if(v.size()>=k) break;
      |            ~~~~~~~~^~~

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