Submission #763715

#	Time	Username	Problem	Language	Result	Execution time	Memory
763715		ivopav	Rack (eJOI19_rack)	C++14	40 / 100	1 ms	212 KiB

rack

#include <bits/stdc++.h>
using namespace std;

int main(){
    long long int n;
    long long int k;
    cin >> n >> k;
    k-=1ll;
    vector<bool> bin={};
    while (k>0ll){
        bin.push_back(k%2);
        k/=2ll;
    }
    while (bin.size()<n){
        bin.push_back(0ll);
    }
    long long int rje=0ll;
    reverse(bin.begin(),bin.end());
    long long int sad=1ll;
    for (long long int i=0;i<bin.size();i++){
        if (bin[i]){
            rje+=sad;
        }
        sad*=2ll;
    }
    cout << rje+1ll << "\n";
}

Compilation message (stderr)

rack.cpp: In function 'int main()':
rack.cpp:14:22: warning: comparison of integer expressions of different signedness: 'std::vector<bool>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   14 |     while (bin.size()<n){
      |            ~~~~~~~~~~^~
rack.cpp:20:29: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<bool>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |     for (long long int i=0;i<bin.size();i++){
      |                            ~^~~~~~~~~~~

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