#include <iostream>
#include <stdio.h>
using namespace std;
void ConvertToBinary(int n);
int main() {
ConvertToBinary(11);
return 0;
}
void ConvertToBinary(int n)
{
if (n / 2 != 0) {
ConvertToBinary(n / 2);
}
printf("%d", n % 2);
}
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