Submission #464020

#	Time	Username	Problem	Language	Result	Execution time	Memory
464020		CyberCow	Rack (eJOI19_rack)	C++17	40 / 100	13 ms	8460 KiB

rack

#include <iostream>
#include <algorithm>
#include <vector>
#include <queue>
#include <set>
#include <string>
#include <cmath>
#include <map>
#include <unordered_map>
#include <fstream>
#include <iomanip>
#include <iterator>
#include <stack>
using namespace std;
using ll = long long;
int a[2000000];
int b[2000000];
int erk = 1;
void rec(int p, int qan)
{
    if (p >= erk)
    {
        a[p - erk] = qan;
    }
    else
    {
        rec(p * 2, (qan + 1) / 2);
        rec(p * 2 + 1, qan / 2);
    }
}
void rec1(int p, int qan)
{
    if (p >= erk)
    {
        b[p - erk] = qan;
    }
    else
    {
        rec1(p * 2, (qan + 1) / 2);
        rec1(p * 2 + 1, qan / 2);
    }
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n, i, j, k;
    cin >> n >> k;
    for ( i = 0; i < n; i++)
    {
        erk *= 2;
    }
    rec(1, k);
    rec1(1, k - 1);
    i = 0;
    while (a[i] == b[i])
    {
        i++;
    }
    cout << i + 1;
    return 0;
}

Compilation message (stderr)

rack.cpp: In function 'int main()':
rack.cpp:47:15: warning: unused variable 'j' [-Wunused-variable]
   47 |     int n, i, j, k;
      |               ^

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