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Submission #415677

# Submission time Handle Problem Language Result Execution time Memory
415677 2021-06-01T11:04:00 Z SeDunion Toy Train (IOI17_train) C++17
100 / 100
 777 ms 10924 KB 
#include "train.h"
#include<bits/stdc++.h>
using namespace std;

const int A = 1;
const int B = 0;

vector<int>g[(int)2e5+22], rg[(int)2e5+22];

int n, m;

int deg[(int)2e5+22];

queue<int>q;

vector<int>f(const int type, const vector<int>&S, const vector<int>&a, const vector<int>&answer) {
	for (int i = 0 ; i < n ; ++ i) {
		if (answer[i] != -1) {
			deg[i] = -1;
			continue;
		}
		deg[i] = 0;
		for (int j : g[i]) {
			deg[i] += answer[j] == -1;
		}
	}
	for (int i : S) {
		deg[i] = -1;
		q.push(i);
	}
	while (q.size()) {
		int v = q.front(); q.pop();
		for (int from : rg[v]) if (deg[from] != -1) {
			if (a[from] == type) {
				deg[from] = -1;
				q.push(from);
			} else {
				if (--deg[from] == 0) {
					deg[from] = -1;
					q.push(from);
				}
			}
		}
	}
	vector<int>ans;
	for (int i = 0 ; i < n ; ++ i) {
		if (deg[i] == -1 && answer[i] == -1) {
			ans.emplace_back(i);
		}
	}
	return ans;
}

vector<int> who_wins(vector<int> a, vector<int> r, vector<int> u, vector<int> v) {
	n = a.size();
	m = u.size();
	for (int i = 0 ; i < m ; ++ i) {
		g[u[i]].emplace_back(v[i]);
		rg[v[i]].emplace_back(u[i]);
	}
	vector<int>answer(n, -1);
	vector<int>R;
	vector<int>fa;
	vector<int>nfa;
	vector<int>infa;
	vector<int>fb;
	while (true) {
		R.clear();
		for (int i = 0 ; i < n ; ++ i) {
			if (r[i] && answer[i] == -1) {
				R.emplace_back(i);
			}
		}
		if (R.empty()) {
			for (int i = 0 ; i < n ; ++ i) {
				if (answer[i] == -1) {
					answer[i] = 0;
				}
			}
			break;
		}
		fa = f(A, R, a, answer);
		infa.assign(n, 0);
		for (int i : fa) infa[i] = 1;
		nfa.clear();
		for (int i = 0 ; i < n ; ++ i) {
			if (answer[i] == -1 && infa[i] == 0) {
				nfa.emplace_back(i);
			}
		}
		fb = f(B, nfa, a, answer);
		if (fb.empty()) {
			for (int i = 0 ; i < n ; ++ i) {
				if (answer[i] == -1) {
					answer[i] = 1;
				}
			}
			break;
		}
		for (int i : fb) answer[i] = 0;
	}
	return answer;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 10292 KB Output is correct
2 Correct 17 ms 10328 KB Output is correct
3 Correct 17 ms 10292 KB Output is correct
4 Correct 16 ms 10316 KB Output is correct
5 Correct 17 ms 10316 KB Output is correct
6 Correct 16 ms 10296 KB Output is correct
7 Correct 17 ms 10348 KB Output is correct
8 Correct 17 ms 10316 KB Output is correct
9 Correct 16 ms 10268 KB Output is correct
10 Correct 14 ms 10292 KB Output is correct
11 Correct 14 ms 10296 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9628 KB Output is correct
2 Correct 8 ms 9652 KB Output is correct
3 Correct 7 ms 9676 KB Output is correct
4 Correct 12 ms 9616 KB Output is correct
5 Correct 7 ms 9680 KB Output is correct
6 Correct 8 ms 9676 KB Output is correct
7 Correct 16 ms 9624 KB Output is correct
8 Correct 8 ms 9608 KB Output is correct
9 Correct 8 ms 9696 KB Output is correct
10 Correct 10 ms 9624 KB Output is correct
11 Correct 7 ms 9676 KB Output is correct
12 Correct 12 ms 9704 KB Output is correct
13 Correct 9 ms 9676 KB Output is correct
14 Correct 8 ms 9720 KB Output is correct
15 Correct 11 ms 9676 KB Output is correct
16 Correct 12 ms 9696 KB Output is correct
17 Correct 11 ms 9704 KB Output is correct
18 Correct 7 ms 9676 KB Output is correct
19 Correct 8 ms 9664 KB Output is correct
20 Correct 9 ms 9676 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 179 ms 10700 KB Output is correct
2 Correct 455 ms 10924 KB Output is correct
3 Correct 488 ms 10712 KB Output is correct
4 Correct 17 ms 10656 KB Output is correct
5 Correct 18 ms 10532 KB Output is correct
6 Correct 17 ms 10636 KB Output is correct
7 Correct 21 ms 10528 KB Output is correct
8 Correct 19 ms 10640 KB Output is correct
9 Correct 17 ms 10640 KB Output is correct
10 Correct 18 ms 10572 KB Output is correct
11 Correct 15 ms 10588 KB Output is correct
12 Correct 17 ms 10504 KB Output is correct
13 Correct 19 ms 10572 KB Output is correct
14 Correct 21 ms 10616 KB Output is correct
15 Correct 19 ms 10572 KB Output is correct
16 Correct 16 ms 10572 KB Output is correct
17 Correct 21 ms 10604 KB Output is correct
18 Correct 613 ms 10408 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 10480 KB Output is correct
2 Correct 16 ms 10444 KB Output is correct
3 Correct 22 ms 10532 KB Output is correct
4 Correct 22 ms 10668 KB Output is correct
5 Correct 17 ms 10528 KB Output is correct
6 Correct 24 ms 10564 KB Output is correct
7 Correct 20 ms 10672 KB Output is correct
8 Correct 16 ms 10520 KB Output is correct
9 Correct 21 ms 10516 KB Output is correct
10 Correct 17 ms 10540 KB Output is correct
11 Correct 21 ms 10656 KB Output is correct
12 Correct 20 ms 10516 KB Output is correct
13 Correct 18 ms 10596 KB Output is correct
14 Correct 19 ms 10556 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 10524 KB Output is correct
2 Correct 20 ms 10608 KB Output is correct
3 Correct 21 ms 10596 KB Output is correct
4 Correct 19 ms 10512 KB Output is correct
5 Correct 9 ms 9676 KB Output is correct
6 Correct 16 ms 10188 KB Output is correct
7 Correct 16 ms 10220 KB Output is correct
8 Correct 16 ms 10236 KB Output is correct
9 Correct 15 ms 10296 KB Output is correct
10 Correct 9 ms 9804 KB Output is correct
11 Correct 16 ms 10188 KB Output is correct

Subtask #6
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 10292 KB Output is correct
2 Correct 17 ms 10328 KB Output is correct
3 Correct 17 ms 10292 KB Output is correct
4 Correct 16 ms 10316 KB Output is correct
5 Correct 17 ms 10316 KB Output is correct
6 Correct 16 ms 10296 KB Output is correct
7 Correct 17 ms 10348 KB Output is correct
8 Correct 17 ms 10316 KB Output is correct
9 Correct 16 ms 10268 KB Output is correct
10 Correct 14 ms 10292 KB Output is correct
11 Correct 14 ms 10296 KB Output is correct
12 Correct 7 ms 9628 KB Output is correct
13 Correct 8 ms 9652 KB Output is correct
14 Correct 7 ms 9676 KB Output is correct
15 Correct 12 ms 9616 KB Output is correct
16 Correct 7 ms 9680 KB Output is correct
17 Correct 8 ms 9676 KB Output is correct
18 Correct 16 ms 9624 KB Output is correct
19 Correct 8 ms 9608 KB Output is correct
20 Correct 8 ms 9696 KB Output is correct
21 Correct 10 ms 9624 KB Output is correct
22 Correct 7 ms 9676 KB Output is correct
23 Correct 12 ms 9704 KB Output is correct
24 Correct 9 ms 9676 KB Output is correct
25 Correct 8 ms 9720 KB Output is correct
26 Correct 11 ms 9676 KB Output is correct
27 Correct 12 ms 9696 KB Output is correct
28 Correct 11 ms 9704 KB Output is correct
29 Correct 7 ms 9676 KB Output is correct
30 Correct 8 ms 9664 KB Output is correct
31 Correct 9 ms 9676 KB Output is correct
32 Correct 179 ms 10700 KB Output is correct
33 Correct 455 ms 10924 KB Output is correct
34 Correct 488 ms 10712 KB Output is correct
35 Correct 17 ms 10656 KB Output is correct
36 Correct 18 ms 10532 KB Output is correct
37 Correct 17 ms 10636 KB Output is correct
38 Correct 21 ms 10528 KB Output is correct
39 Correct 19 ms 10640 KB Output is correct
40 Correct 17 ms 10640 KB Output is correct
41 Correct 18 ms 10572 KB Output is correct
42 Correct 15 ms 10588 KB Output is correct
43 Correct 17 ms 10504 KB Output is correct
44 Correct 19 ms 10572 KB Output is correct
45 Correct 21 ms 10616 KB Output is correct
46 Correct 19 ms 10572 KB Output is correct
47 Correct 16 ms 10572 KB Output is correct
48 Correct 21 ms 10604 KB Output is correct
49 Correct 613 ms 10408 KB Output is correct
50 Correct 19 ms 10480 KB Output is correct
51 Correct 16 ms 10444 KB Output is correct
52 Correct 22 ms 10532 KB Output is correct
53 Correct 22 ms 10668 KB Output is correct
54 Correct 17 ms 10528 KB Output is correct
55 Correct 24 ms 10564 KB Output is correct
56 Correct 20 ms 10672 KB Output is correct
57 Correct 16 ms 10520 KB Output is correct
58 Correct 21 ms 10516 KB Output is correct
59 Correct 17 ms 10540 KB Output is correct
60 Correct 21 ms 10656 KB Output is correct
61 Correct 20 ms 10516 KB Output is correct
62 Correct 18 ms 10596 KB Output is correct
63 Correct 19 ms 10556 KB Output is correct
64 Correct 20 ms 10524 KB Output is correct
65 Correct 20 ms 10608 KB Output is correct
66 Correct 21 ms 10596 KB Output is correct
67 Correct 19 ms 10512 KB Output is correct
68 Correct 9 ms 9676 KB Output is correct
69 Correct 16 ms 10188 KB Output is correct
70 Correct 16 ms 10220 KB Output is correct
71 Correct 16 ms 10236 KB Output is correct
72 Correct 15 ms 10296 KB Output is correct
73 Correct 9 ms 9804 KB Output is correct
74 Correct 16 ms 10188 KB Output is correct
75 Correct 256 ms 10708 KB Output is correct
76 Correct 391 ms 10712 KB Output is correct
77 Correct 551 ms 10716 KB Output is correct
78 Correct 532 ms 10716 KB Output is correct
79 Correct 568 ms 10716 KB Output is correct
80 Correct 17 ms 10656 KB Output is correct
81 Correct 19 ms 10564 KB Output is correct
82 Correct 24 ms 10600 KB Output is correct
83 Correct 23 ms 10524 KB Output is correct
84 Correct 19 ms 10596 KB Output is correct
85 Correct 20 ms 10700 KB Output is correct
86 Correct 23 ms 10524 KB Output is correct
87 Correct 21 ms 10572 KB Output is correct
88 Correct 22 ms 10528 KB Output is correct
89 Correct 17 ms 10636 KB Output is correct
90 Correct 34 ms 10620 KB Output is correct
91 Correct 29 ms 10652 KB Output is correct
92 Correct 46 ms 10664 KB Output is correct
93 Correct 47 ms 10644 KB Output is correct
94 Correct 40 ms 10648 KB Output is correct
95 Correct 45 ms 10572 KB Output is correct
96 Correct 123 ms 10596 KB Output is correct
97 Correct 560 ms 10680 KB Output is correct
98 Correct 773 ms 10668 KB Output is correct
99 Correct 777 ms 10648 KB Output is correct
100 Correct 614 ms 10416 KB Output is correct