#include <bits/stdc++.h>
using namespace std;
int main() {
int N;
cin >> N;
vector<int>A(10);
for(int i=0; i<10; i++){
A[i] = N % 2;
N /= 2;
}
for(int i=9; i>=0; i--){
cout << A[i];
}
// your code goes here
return 0;
}
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