/*
* @Author: hungeazy
* @Date: 2026-03-04 23:24:15
* @Last Modified by: hungeazy
* @Last Modified time: 2026-03-18 23:02:32
*/
#include <bits/stdc++.h>
using namespace std;
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL); cout.tie(NULL);
int n;
cin >> n;
string st = "";
while (n != 0)
{
st += char(n%2+'0');
n /= 2;
}
reverse(st.begin(),st.end());
cout << st;
}
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