[伯俊]199化油器回路

#include <iostream>
#include <vector>
#include <cstring>
#include <algorithm>
using namespace std;

int N;
int cnt[1001] = { 0 };
int adj[1001][1001] = { 0 };

void getEulerCircuit(int here) {

	for (int i = 0; i< N; ++i) {
		while (adj[here][i] > 0) {
			adj[here][i]--;
			adj[i][here]--;

			getEulerCircuit(i);
		}
	}
	cout << here + 1<<" ";
}

int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);

	cin >> N;

	for (int i = 0; i < N; ++i) {
		for (int j = 0; j < N; ++j) {
			cin >> adj[i][j];
			cnt[i] += adj[i][j];
		}
		if (cnt[i] % 2) {
			cout << -1;
			return 0;
		}
	}
	
	//오일러 서킷 구하기
	getEulerCircuit(0);
	return 0;
}