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Submission #415679

# Submission time Handle Problem Language Result Execution time Memory
415679 2021-06-01T11:04:02 Z SeDunion Toy Train (IOI17_train) C++17
100 / 100
 799 ms 10904 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 14 ms 10316 KB Output is correct
2 Correct 13 ms 10316 KB Output is correct
3 Correct 17 ms 10316 KB Output is correct
4 Correct 17 ms 10324 KB Output is correct
5 Correct 16 ms 10292 KB Output is correct
6 Correct 14 ms 10316 KB Output is correct
7 Correct 12 ms 10316 KB Output is correct
8 Correct 15 ms 10272 KB Output is correct
9 Correct 15 ms 10316 KB Output is correct
10 Correct 16 ms 10296 KB Output is correct
11 Correct 11 ms 10316 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 9676 KB Output is correct
2 Correct 10 ms 9676 KB Output is correct
3 Correct 7 ms 9676 KB Output is correct
4 Correct 8 ms 9656 KB Output is correct
5 Correct 7 ms 9676 KB Output is correct
6 Correct 7 ms 9676 KB Output is correct
7 Correct 8 ms 9676 KB Output is correct
8 Correct 9 ms 9676 KB Output is correct
9 Correct 9 ms 9676 KB Output is correct
10 Correct 8 ms 9676 KB Output is correct
11 Correct 8 ms 9676 KB Output is correct
12 Correct 8 ms 9700 KB Output is correct
13 Correct 8 ms 9676 KB Output is correct
14 Correct 8 ms 9676 KB Output is correct
15 Correct 8 ms 9676 KB Output is correct
16 Correct 9 ms 9600 KB Output is correct
17 Correct 8 ms 9676 KB Output is correct
18 Correct 9 ms 9676 KB Output is correct
19 Correct 8 ms 9676 KB Output is correct
20 Correct 8 ms 9676 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 189 ms 10700 KB Output is correct
2 Correct 350 ms 10716 KB Output is correct
3 Correct 520 ms 10716 KB Output is correct
4 Correct 16 ms 10620 KB Output is correct
5 Correct 19 ms 10532 KB Output is correct
6 Correct 23 ms 10572 KB Output is correct
7 Correct 18 ms 10532 KB Output is correct
8 Correct 21 ms 10532 KB Output is correct
9 Correct 14 ms 10528 KB Output is correct
10 Correct 15 ms 10572 KB Output is correct
11 Correct 22 ms 10564 KB Output is correct
12 Correct 17 ms 10516 KB Output is correct
13 Correct 15 ms 10528 KB Output is correct
14 Correct 16 ms 10572 KB Output is correct
15 Correct 15 ms 10620 KB Output is correct
16 Correct 16 ms 10560 KB Output is correct
17 Correct 16 ms 10528 KB Output is correct
18 Correct 593 ms 10416 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 10444 KB Output is correct
2 Correct 14 ms 10444 KB Output is correct
3 Correct 18 ms 10640 KB Output is correct
4 Correct 21 ms 10544 KB Output is correct
5 Correct 16 ms 10572 KB Output is correct
6 Correct 19 ms 10624 KB Output is correct
7 Correct 19 ms 10520 KB Output is correct
8 Correct 20 ms 10520 KB Output is correct
9 Correct 19 ms 10508 KB Output is correct
10 Correct 20 ms 10572 KB Output is correct
11 Correct 20 ms 10656 KB Output is correct
12 Correct 21 ms 10528 KB Output is correct
13 Correct 24 ms 10656 KB Output is correct
14 Correct 15 ms 10528 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 10532 KB Output is correct
2 Correct 21 ms 10572 KB Output is correct
3 Correct 24 ms 10540 KB Output is correct
4 Correct 19 ms 10520 KB Output is correct
5 Correct 9 ms 9676 KB Output is correct
6 Correct 14 ms 10284 KB Output is correct
7 Correct 15 ms 10188 KB Output is correct
8 Correct 14 ms 10188 KB Output is correct
9 Correct 15 ms 10316 KB Output is correct
10 Correct 8 ms 9876 KB Output is correct
11 Correct 14 ms 10200 KB Output is correct

Subtask #6
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 10316 KB Output is correct
2 Correct 13 ms 10316 KB Output is correct
3 Correct 17 ms 10316 KB Output is correct
4 Correct 17 ms 10324 KB Output is correct
5 Correct 16 ms 10292 KB Output is correct
6 Correct 14 ms 10316 KB Output is correct
7 Correct 12 ms 10316 KB Output is correct
8 Correct 15 ms 10272 KB Output is correct
9 Correct 15 ms 10316 KB Output is correct
10 Correct 16 ms 10296 KB Output is correct
11 Correct 11 ms 10316 KB Output is correct
12 Correct 8 ms 9676 KB Output is correct
13 Correct 10 ms 9676 KB Output is correct
14 Correct 7 ms 9676 KB Output is correct
15 Correct 8 ms 9656 KB Output is correct
16 Correct 7 ms 9676 KB Output is correct
17 Correct 7 ms 9676 KB Output is correct
18 Correct 8 ms 9676 KB Output is correct
19 Correct 9 ms 9676 KB Output is correct
20 Correct 9 ms 9676 KB Output is correct
21 Correct 8 ms 9676 KB Output is correct
22 Correct 8 ms 9676 KB Output is correct
23 Correct 8 ms 9700 KB Output is correct
24 Correct 8 ms 9676 KB Output is correct
25 Correct 8 ms 9676 KB Output is correct
26 Correct 8 ms 9676 KB Output is correct
27 Correct 9 ms 9600 KB Output is correct
28 Correct 8 ms 9676 KB Output is correct
29 Correct 9 ms 9676 KB Output is correct
30 Correct 8 ms 9676 KB Output is correct
31 Correct 8 ms 9676 KB Output is correct
32 Correct 189 ms 10700 KB Output is correct
33 Correct 350 ms 10716 KB Output is correct
34 Correct 520 ms 10716 KB Output is correct
35 Correct 16 ms 10620 KB Output is correct
36 Correct 19 ms 10532 KB Output is correct
37 Correct 23 ms 10572 KB Output is correct
38 Correct 18 ms 10532 KB Output is correct
39 Correct 21 ms 10532 KB Output is correct
40 Correct 14 ms 10528 KB Output is correct
41 Correct 15 ms 10572 KB Output is correct
42 Correct 22 ms 10564 KB Output is correct
43 Correct 17 ms 10516 KB Output is correct
44 Correct 15 ms 10528 KB Output is correct
45 Correct 16 ms 10572 KB Output is correct
46 Correct 15 ms 10620 KB Output is correct
47 Correct 16 ms 10560 KB Output is correct
48 Correct 16 ms 10528 KB Output is correct
49 Correct 593 ms 10416 KB Output is correct
50 Correct 14 ms 10444 KB Output is correct
51 Correct 14 ms 10444 KB Output is correct
52 Correct 18 ms 10640 KB Output is correct
53 Correct 21 ms 10544 KB Output is correct
54 Correct 16 ms 10572 KB Output is correct
55 Correct 19 ms 10624 KB Output is correct
56 Correct 19 ms 10520 KB Output is correct
57 Correct 20 ms 10520 KB Output is correct
58 Correct 19 ms 10508 KB Output is correct
59 Correct 20 ms 10572 KB Output is correct
60 Correct 20 ms 10656 KB Output is correct
61 Correct 21 ms 10528 KB Output is correct
62 Correct 24 ms 10656 KB Output is correct
63 Correct 15 ms 10528 KB Output is correct
64 Correct 20 ms 10532 KB Output is correct
65 Correct 21 ms 10572 KB Output is correct
66 Correct 24 ms 10540 KB Output is correct
67 Correct 19 ms 10520 KB Output is correct
68 Correct 9 ms 9676 KB Output is correct
69 Correct 14 ms 10284 KB Output is correct
70 Correct 15 ms 10188 KB Output is correct
71 Correct 14 ms 10188 KB Output is correct
72 Correct 15 ms 10316 KB Output is correct
73 Correct 8 ms 9876 KB Output is correct
74 Correct 14 ms 10200 KB Output is correct
75 Correct 249 ms 10692 KB Output is correct
76 Correct 363 ms 10820 KB Output is correct
77 Correct 520 ms 10712 KB Output is correct
78 Correct 499 ms 10720 KB Output is correct
79 Correct 508 ms 10820 KB Output is correct
80 Correct 19 ms 10572 KB Output is correct
81 Correct 22 ms 10524 KB Output is correct
82 Correct 22 ms 10536 KB Output is correct
83 Correct 25 ms 10600 KB Output is correct
84 Correct 20 ms 10648 KB Output is correct
85 Correct 21 ms 10572 KB Output is correct
86 Correct 20 ms 10648 KB Output is correct
87 Correct 18 ms 10612 KB Output is correct
88 Correct 23 ms 10628 KB Output is correct
89 Correct 21 ms 10508 KB Output is correct
90 Correct 25 ms 10668 KB Output is correct
91 Correct 31 ms 10656 KB Output is correct
92 Correct 42 ms 10652 KB Output is correct
93 Correct 47 ms 10592 KB Output is correct
94 Correct 44 ms 10652 KB Output is correct
95 Correct 40 ms 10652 KB Output is correct
96 Correct 123 ms 10620 KB Output is correct
97 Correct 531 ms 10676 KB Output is correct
98 Correct 770 ms 10788 KB Output is correct
99 Correct 799 ms 10904 KB Output is correct
100 Correct 705 ms 10524 KB Output is correct