#include <bits/stdc++.h>
using namespace std;
int main() {
	long long n;
	cin >> n;
	if ((n - 1) % 4 == 0&&n!=1) {
		for (int i = 1; i <= n/4; i++)
		cout << "0011";
		cout << 0 << endl;
		return 0;
	} else cout<<-1<<endl;
	return 0;
}

#include <bits/stdc++.h>
using namespace std;
int main() {
	long long n;
	cin >> n;
	if ((n - 1) % 4 == 0&&n!=1) {
		for (int i = 1; i <= n/4; i++)
		cout << "00110"<<endl;
		return 0;
	} else cout<<-1<<endl;
	return 0;
}

为什么上面的能过，下面的不行