题解

#include<bits/stdc++.h>
using namespace std;
void meiyou(int lizhi){
	if(!lizhi) return;
	meiyou(lizhi/2);
	cout << lizhi%2;
}
int main(){
	int suzhi;
	cin >> suzhi;
	meiyou(suzhi);

	return 0;
}

希丰展，用Md