Submission #116041

#	Time	Username	Problem	Language	Result	Execution time	Memory
116041		MAMBA	Senior Postmen (BOI14_postmen)	C++17	55 / 100	585 ms	80372 KiB

postmen

#include <bits/stdc++.h> 

using namespace std;

#define rep(i , j , k) for (int i = j; i < (int)k; i++)
#define pb push_back
#define mt make_tuple
#define all(x) x.begin(),x.end()

typedef long long ll;
typedef pair<int , int> pii;
typedef pair<ll, ll> pll;
typedef long double ld;
typedef complex<ld> point;
typedef pair<ld , ld> pld;
typedef vector<ll> vi;

inline void fileIO(string s) {
	//	freopen((s + ".in").c_str(), "r", stdin);
	freopen((s + ".out").c_str(), "w", stdout);
}

template<class T , class S>
inline bool smin(T &a, S b) { return (T)b < a ? a = b , 1 : 0; }
template<class T , class S>
inline bool smax(T &a, S b) { return a < (T)b ? a = b , 1 : 0; }

constexpr int N = 5e5 + 10;
constexpr int MOD = 1e9 + 7;

template<typename T>
inline T mod(T &v) { return v = (v % MOD + MOD) % MOD; }
template<typename S, typename T>
inline S add(S &l, T r) { return mod(l += r); }

int n, m, a[N], b[N];
vector<int> adj[N];
int ptr[N];
bitset<N> mark, mark2;

vi st;
void dfs(int v) {
	for (int &id = ptr[v]; id < (int)adj[v].size(); id++) {
		int e = adj[v][id];
		if (!mark[e]) {
			mark[e] = true;
			dfs(a[e] ^ b[e] ^ v);
		}
	}
	if (mark2[v]) {
		while (mark2[v]) {
			cout << st.back() << ' ';
			mark2[st.back()] = false;
			st.pop_back();
		}
		cout << endl;
	} 
	mark2[v] = true;
	st.pb(v);

}

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);

	cin >> n >> m;
	rep(i , 0 , m) {
		cin >> a[i] >> b[i];
		adj[a[i]].pb(i);
		adj[b[i]].pb(i);
	}

	dfs(1);

	return 0;
}

• Subtask 1: 38 / 38
• Subtask 2: 17 / 17
• Subtask 3: 0 / 45