oj.uz

Submission #875843

# Submission time Handle Problem Language Result Execution time Memory
875843 2023-11-20T15:35:18 Z Mizo_Compiler Naboj (COCI22_naboj) C++17
110 / 110
 151 ms 21032 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef double ld;
#define pb push_back
#define sz(x) int(x.size())
#define all(x) x.begin(),x.end()
#define F first
#define S second
const int N = 2e5+5;
int n, m, in[N];
vector<int> adj[N];
vector<pair<int, int>> ans;
int cnt = 0;

int main () {
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	cin >> n >> m;
	for (int i = 0; i < m; i++) {
		int u, v;
		cin >> u >> v;
		--u, --v;
		adj[u].pb(v);
		in[v]++;
	}
	queue<int> q;
	for (int i = 0; i < n; i++) {
		if (!in[i])q.push(i);
	}
	while (!q.empty()) {
		int u = q.front();
		q.pop();
		cnt++;
		for (auto &v : adj[u]) {
			if (--in[v] == 0)q.push(v);
		}
		if (adj[u].empty())ans.pb({u, 0});
		else ans.pb({u, 1});
	}
	if (cnt != n) {
		cout << -1;
		return 0;
	}
	cout << sz(ans) << "\n";
  	reverse(all(ans));
	for (auto &[x, y] : ans)cout << x+1 << " " << y << "\n";
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4956 KB Output is correct
2 Correct 1 ms 4956 KB Output is correct
3 Correct 1 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 1 ms 4952 KB Output is correct
6 Correct 1 ms 4952 KB Output is correct
7 Correct 2 ms 4956 KB Output is correct
8 Correct 1 ms 5208 KB Output is correct
9 Correct 1 ms 4952 KB Output is correct
10 Correct 1 ms 4952 KB Output is correct
11 Correct 1 ms 4956 KB Output is correct
12 Correct 1 ms 4956 KB Output is correct
13 Correct 1 ms 4952 KB Output is correct
14 Correct 2 ms 5208 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 84 ms 13692 KB Output is correct
2 Correct 79 ms 16188 KB Output is correct
3 Correct 35 ms 10956 KB Output is correct
4 Correct 77 ms 16316 KB Output is correct
5 Correct 90 ms 16216 KB Output is correct
6 Correct 76 ms 16324 KB Output is correct
7 Correct 78 ms 16176 KB Output is correct
8 Correct 65 ms 13720 KB Output is correct
9 Correct 75 ms 16072 KB Output is correct
10 Correct 75 ms 16376 KB Output is correct

Subtask #3
70.0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4956 KB Output is correct
2 Correct 1 ms 4956 KB Output is correct
3 Correct 1 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 1 ms 4952 KB Output is correct
6 Correct 1 ms 4952 KB Output is correct
7 Correct 2 ms 4956 KB Output is correct
8 Correct 1 ms 5208 KB Output is correct
9 Correct 1 ms 4952 KB Output is correct
10 Correct 1 ms 4952 KB Output is correct
11 Correct 1 ms 4956 KB Output is correct
12 Correct 1 ms 4956 KB Output is correct
13 Correct 1 ms 4952 KB Output is correct
14 Correct 2 ms 5208 KB Output is correct
15 Correct 84 ms 13692 KB Output is correct
16 Correct 79 ms 16188 KB Output is correct
17 Correct 35 ms 10956 KB Output is correct
18 Correct 77 ms 16316 KB Output is correct
19 Correct 90 ms 16216 KB Output is correct
20 Correct 76 ms 16324 KB Output is correct
21 Correct 78 ms 16176 KB Output is correct
22 Correct 65 ms 13720 KB Output is correct
23 Correct 75 ms 16072 KB Output is correct
24 Correct 75 ms 16376 KB Output is correct
25 Correct 78 ms 15184 KB Output is correct
26 Correct 68 ms 15852 KB Output is correct
27 Correct 90 ms 16700 KB Output is correct
28 Correct 98 ms 18160 KB Output is correct
29 Correct 68 ms 15968 KB Output is correct
30 Correct 96 ms 18108 KB Output is correct
31 Correct 16 ms 7004 KB Output is correct
32 Correct 80 ms 15548 KB Output is correct
33 Correct 127 ms 20296 KB Output is correct
34 Correct 91 ms 16120 KB Output is correct
35 Correct 127 ms 20184 KB Output is correct
36 Correct 88 ms 15448 KB Output is correct
37 Correct 134 ms 19360 KB Output is correct
38 Correct 104 ms 17896 KB Output is correct
39 Correct 151 ms 20192 KB Output is correct
40 Correct 111 ms 18660 KB Output is correct
41 Correct 109 ms 18540 KB Output is correct
42 Correct 131 ms 20672 KB Output is correct
43 Correct 86 ms 16444 KB Output is correct
44 Correct 150 ms 21032 KB Output is correct
45 Correct 84 ms 15868 KB Output is correct
46 Correct 128 ms 18660 KB Output is correct