Submission #763708

#	Time	Username	Problem	Language	Result	Execution time	Memory
763708		ivopav	Rack (eJOI19_rack)	C++14	40 / 100	1 ms	300 KiB

rack

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

int main(){
    int n;
    int k;
    cin >> n >> k;
    k--;
    vector<bool> bin={};
    while (k>0){
        bin.push_back(k%2);
        k/=2;
    }
    while (bin.size()<n){
        bin.push_back(0);
    }
    int rje=0;
    reverse(bin.begin(),bin.end());
    int sad=1;
    for (int i=0;i<bin.size();i++){
        if (bin[i]){
            rje+=sad;
        }
        sad*=2;
    }
    cout << rje+1 << "\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 'int' [-Wsign-compare]
   14 |     while (bin.size()<n){
      |            ~~~~~~~~~~^~
rack.cpp:20:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<bool>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |     for (int i=0;i<bin.size();i++){
      |                  ~^~~~~~~~~~~

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