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Submission #415678

# Submission time Handle Problem Language Result Execution time Memory
415678 2021-06-01T11:04:01 Z SeDunion Toy Train (IOI17_train) C++17
100 / 100
 767 ms 10948 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 19 ms 10448 KB Output is correct
2 Correct 18 ms 10336 KB Output is correct
3 Correct 18 ms 10408 KB Output is correct
4 Correct 15 ms 10432 KB Output is correct
5 Correct 14 ms 10436 KB Output is correct
6 Correct 14 ms 10424 KB Output is correct
7 Correct 16 ms 10444 KB Output is correct
8 Correct 14 ms 10332 KB Output is correct
9 Correct 13 ms 10336 KB Output is correct
10 Correct 17 ms 10348 KB Output is correct
11 Correct 15 ms 10404 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9676 KB Output is correct
2 Correct 9 ms 9676 KB Output is correct
3 Correct 7 ms 9696 KB Output is correct
4 Correct 9 ms 9696 KB Output is correct
5 Correct 11 ms 9676 KB Output is correct
6 Correct 9 ms 9676 KB Output is correct
7 Correct 7 ms 9676 KB Output is correct
8 Correct 10 ms 9668 KB Output is correct
9 Correct 8 ms 9668 KB Output is correct
10 Correct 8 ms 9660 KB Output is correct
11 Correct 9 ms 9700 KB Output is correct
12 Correct 10 ms 9712 KB Output is correct
13 Correct 9 ms 9624 KB Output is correct
14 Correct 8 ms 9696 KB Output is correct
15 Correct 10 ms 9676 KB Output is correct
16 Correct 7 ms 9676 KB Output is correct
17 Correct 9 ms 9696 KB Output is correct
18 Correct 7 ms 9676 KB Output is correct
19 Correct 11 ms 9588 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 210 ms 10912 KB Output is correct
2 Correct 328 ms 10720 KB Output is correct
3 Correct 488 ms 10920 KB Output is correct
4 Correct 16 ms 10732 KB Output is correct
5 Correct 21 ms 10736 KB Output is correct
6 Correct 18 ms 10820 KB Output is correct
7 Correct 18 ms 10828 KB Output is correct
8 Correct 17 ms 10764 KB Output is correct
9 Correct 17 ms 10700 KB Output is correct
10 Correct 19 ms 10724 KB Output is correct
11 Correct 25 ms 10732 KB Output is correct
12 Correct 18 ms 10760 KB Output is correct
13 Correct 24 ms 10688 KB Output is correct
14 Correct 21 ms 10828 KB Output is correct
15 Correct 18 ms 10784 KB Output is correct
16 Correct 16 ms 10732 KB Output is correct
17 Correct 19 ms 10812 KB Output is correct
18 Correct 620 ms 10524 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 10572 KB Output is correct
2 Correct 19 ms 10680 KB Output is correct
3 Correct 19 ms 10860 KB Output is correct
4 Correct 19 ms 10844 KB Output is correct
5 Correct 22 ms 10836 KB Output is correct
6 Correct 17 ms 10708 KB Output is correct
7 Correct 20 ms 10700 KB Output is correct
8 Correct 16 ms 10816 KB Output is correct
9 Correct 20 ms 10736 KB Output is correct
10 Correct 18 ms 10764 KB Output is correct
11 Correct 20 ms 10784 KB Output is correct
12 Correct 21 ms 10760 KB Output is correct
13 Correct 27 ms 10844 KB Output is correct
14 Correct 22 ms 10716 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 10728 KB Output is correct
2 Correct 19 ms 10696 KB Output is correct
3 Correct 23 ms 10744 KB Output is correct
4 Correct 22 ms 10668 KB Output is correct
5 Correct 8 ms 9648 KB Output is correct
6 Correct 13 ms 10316 KB Output is correct
7 Correct 17 ms 10352 KB Output is correct
8 Correct 16 ms 10444 KB Output is correct
9 Correct 16 ms 10336 KB Output is correct
10 Correct 12 ms 9804 KB Output is correct
11 Correct 14 ms 10324 KB Output is correct

Subtask #6
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 10448 KB Output is correct
2 Correct 18 ms 10336 KB Output is correct
3 Correct 18 ms 10408 KB Output is correct
4 Correct 15 ms 10432 KB Output is correct
5 Correct 14 ms 10436 KB Output is correct
6 Correct 14 ms 10424 KB Output is correct
7 Correct 16 ms 10444 KB Output is correct
8 Correct 14 ms 10332 KB Output is correct
9 Correct 13 ms 10336 KB Output is correct
10 Correct 17 ms 10348 KB Output is correct
11 Correct 15 ms 10404 KB Output is correct
12 Correct 9 ms 9676 KB Output is correct
13 Correct 9 ms 9676 KB Output is correct
14 Correct 7 ms 9696 KB Output is correct
15 Correct 9 ms 9696 KB Output is correct
16 Correct 11 ms 9676 KB Output is correct
17 Correct 9 ms 9676 KB Output is correct
18 Correct 7 ms 9676 KB Output is correct
19 Correct 10 ms 9668 KB Output is correct
20 Correct 8 ms 9668 KB Output is correct
21 Correct 8 ms 9660 KB Output is correct
22 Correct 9 ms 9700 KB Output is correct
23 Correct 10 ms 9712 KB Output is correct
24 Correct 9 ms 9624 KB Output is correct
25 Correct 8 ms 9696 KB Output is correct
26 Correct 10 ms 9676 KB Output is correct
27 Correct 7 ms 9676 KB Output is correct
28 Correct 9 ms 9696 KB Output is correct
29 Correct 7 ms 9676 KB Output is correct
30 Correct 11 ms 9588 KB Output is correct
31 Correct 9 ms 9676 KB Output is correct
32 Correct 210 ms 10912 KB Output is correct
33 Correct 328 ms 10720 KB Output is correct
34 Correct 488 ms 10920 KB Output is correct
35 Correct 16 ms 10732 KB Output is correct
36 Correct 21 ms 10736 KB Output is correct
37 Correct 18 ms 10820 KB Output is correct
38 Correct 18 ms 10828 KB Output is correct
39 Correct 17 ms 10764 KB Output is correct
40 Correct 17 ms 10700 KB Output is correct
41 Correct 19 ms 10724 KB Output is correct
42 Correct 25 ms 10732 KB Output is correct
43 Correct 18 ms 10760 KB Output is correct
44 Correct 24 ms 10688 KB Output is correct
45 Correct 21 ms 10828 KB Output is correct
46 Correct 18 ms 10784 KB Output is correct
47 Correct 16 ms 10732 KB Output is correct
48 Correct 19 ms 10812 KB Output is correct
49 Correct 620 ms 10524 KB Output is correct
50 Correct 15 ms 10572 KB Output is correct
51 Correct 19 ms 10680 KB Output is correct
52 Correct 19 ms 10860 KB Output is correct
53 Correct 19 ms 10844 KB Output is correct
54 Correct 22 ms 10836 KB Output is correct
55 Correct 17 ms 10708 KB Output is correct
56 Correct 20 ms 10700 KB Output is correct
57 Correct 16 ms 10816 KB Output is correct
58 Correct 20 ms 10736 KB Output is correct
59 Correct 18 ms 10764 KB Output is correct
60 Correct 20 ms 10784 KB Output is correct
61 Correct 21 ms 10760 KB Output is correct
62 Correct 27 ms 10844 KB Output is correct
63 Correct 22 ms 10716 KB Output is correct
64 Correct 22 ms 10728 KB Output is correct
65 Correct 19 ms 10696 KB Output is correct
66 Correct 23 ms 10744 KB Output is correct
67 Correct 22 ms 10668 KB Output is correct
68 Correct 8 ms 9648 KB Output is correct
69 Correct 13 ms 10316 KB Output is correct
70 Correct 17 ms 10352 KB Output is correct
71 Correct 16 ms 10444 KB Output is correct
72 Correct 16 ms 10336 KB Output is correct
73 Correct 12 ms 9804 KB Output is correct
74 Correct 14 ms 10324 KB Output is correct
75 Correct 253 ms 10884 KB Output is correct
76 Correct 366 ms 10928 KB Output is correct
77 Correct 537 ms 10928 KB Output is correct
78 Correct 558 ms 10948 KB Output is correct
79 Correct 557 ms 10928 KB Output is correct
80 Correct 18 ms 10820 KB Output is correct
81 Correct 22 ms 10880 KB Output is correct
82 Correct 21 ms 10736 KB Output is correct
83 Correct 21 ms 10792 KB Output is correct
84 Correct 17 ms 10732 KB Output is correct
85 Correct 20 ms 10820 KB Output is correct
86 Correct 22 ms 10848 KB Output is correct
87 Correct 18 ms 10740 KB Output is correct
88 Correct 26 ms 10808 KB Output is correct
89 Correct 18 ms 10736 KB Output is correct
90 Correct 30 ms 10840 KB Output is correct
91 Correct 25 ms 10760 KB Output is correct
92 Correct 44 ms 10884 KB Output is correct
93 Correct 47 ms 10844 KB Output is correct
94 Correct 38 ms 10892 KB Output is correct
95 Correct 40 ms 10828 KB Output is correct
96 Correct 126 ms 10784 KB Output is correct
97 Correct 538 ms 10888 KB Output is correct
98 Correct 747 ms 10860 KB Output is correct
99 Correct 767 ms 10844 KB Output is correct
100 Correct 689 ms 10480 KB Output is correct