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Submission #58642

# Submission time Handle Problem Language Result Execution time Memory
58642 2018-07-18T14:42:27 Z reality Toy Train (IOI17_train) C++17
100 / 100
 609 ms 36356 KB 
#include "bits/stdc++.h"
using namespace std;
#define fi first
#define se second
#define ll long long
#define dbg(v) cerr<<#v<<" = "<<v<<'\n'
#define vi vector<int>
#define vl vector <ll>
#define pii pair<int,int>
#define mp make_pair
#define db long double
#define pb push_back
#define all(s) s.begin(),s.end()
template < class T > T smin(T &a,T b) {if (a > b) a = b;return a;}
template < class T > T smax(T &a,T b) {if (a < b) a = b;return a;}
#include "train.h"

vi answer;
int n;
const int N = 1e6;
vi G[N];
int deg[N];
int d[N];
vi who;

void dfs(int node) {
	for (auto it : G[node]) {
		--deg[it];
		if (!deg[it] && who[it])
			dfs(it);
	}
}

vi who_wins(vi a, vi b, vi u, vi v) {
	n = a.size();
	for (auto & it : b)
		it ^= 1;
	who = b;
	for (int i = 0;i < u.size();++i)
		G[v[i]].pb(u[i]),++d[u[i]];
	answer.resize(n);
	for (int i = 0;i < n;++i)
		answer[i] = 1;
	int ok;
	do {
		ok = 0;
		who = b;
		for (int i = 0;i < n;++i)
			deg[i] = a[i] ? 1 : d[i];
		for (int i = 0;i < n;++i)
			if (!who[i] && answer[i])
				dfs(i);
		for (int i = 0;i < n;++i) {
			if (!who[i] && answer[i] && deg[i] > 0)
				ok = 1,answer[i] = 0;
		}
	} while (ok);
	for (int i = 0;i < n;++i)
		answer[i] &= deg[i] <= 0;
	return answer;
}

Compilation message

train.cpp: In function 'std::vector<int> who_wins(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
train.cpp:39:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0;i < u.size();++i)
                 ~~^~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 24184 KB Output is correct
2 Correct 36 ms 24548 KB Output is correct
3 Correct 41 ms 24616 KB Output is correct
4 Correct 33 ms 24824 KB Output is correct
5 Correct 35 ms 24968 KB Output is correct
6 Correct 33 ms 24968 KB Output is correct
7 Correct 30 ms 25140 KB Output is correct
8 Correct 28 ms 25160 KB Output is correct
9 Correct 37 ms 25244 KB Output is correct
10 Correct 33 ms 25324 KB Output is correct
11 Correct 31 ms 25404 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 25404 KB Output is correct
2 Correct 25 ms 25404 KB Output is correct
3 Correct 24 ms 25404 KB Output is correct
4 Correct 28 ms 25404 KB Output is correct
5 Correct 28 ms 25404 KB Output is correct
6 Correct 30 ms 25404 KB Output is correct
7 Correct 26 ms 25404 KB Output is correct
8 Correct 26 ms 25404 KB Output is correct
9 Correct 24 ms 25404 KB Output is correct
10 Correct 27 ms 25404 KB Output is correct
11 Correct 24 ms 25404 KB Output is correct
12 Correct 24 ms 25404 KB Output is correct
13 Correct 26 ms 25404 KB Output is correct
14 Correct 24 ms 25404 KB Output is correct
15 Correct 25 ms 25404 KB Output is correct
16 Correct 24 ms 25404 KB Output is correct
17 Correct 27 ms 25404 KB Output is correct
18 Correct 30 ms 25404 KB Output is correct
19 Correct 27 ms 25404 KB Output is correct
20 Correct 26 ms 25404 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 111 ms 25968 KB Output is correct
2 Correct 202 ms 26132 KB Output is correct
3 Correct 237 ms 26404 KB Output is correct
4 Correct 33 ms 26408 KB Output is correct
5 Correct 44 ms 26744 KB Output is correct
6 Correct 36 ms 26824 KB Output is correct
7 Correct 40 ms 27032 KB Output is correct
8 Correct 33 ms 27284 KB Output is correct
9 Correct 34 ms 27448 KB Output is correct
10 Correct 47 ms 27616 KB Output is correct
11 Correct 43 ms 27896 KB Output is correct
12 Correct 42 ms 27904 KB Output is correct
13 Correct 33 ms 28340 KB Output is correct
14 Correct 38 ms 28620 KB Output is correct
15 Correct 43 ms 28828 KB Output is correct
16 Correct 37 ms 28972 KB Output is correct
17 Correct 31 ms 29172 KB Output is correct
18 Correct 318 ms 29172 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 31 ms 29172 KB Output is correct
2 Correct 32 ms 29240 KB Output is correct
3 Correct 34 ms 29576 KB Output is correct
4 Correct 35 ms 29884 KB Output is correct
5 Correct 34 ms 29964 KB Output is correct
6 Correct 34 ms 30168 KB Output is correct
7 Correct 33 ms 30496 KB Output is correct
8 Correct 40 ms 30568 KB Output is correct
9 Correct 33 ms 30764 KB Output is correct
10 Correct 34 ms 31112 KB Output is correct
11 Correct 39 ms 31112 KB Output is correct
12 Correct 37 ms 31112 KB Output is correct
13 Correct 36 ms 31112 KB Output is correct
14 Correct 32 ms 31112 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 31112 KB Output is correct
2 Correct 39 ms 31112 KB Output is correct
3 Correct 34 ms 31112 KB Output is correct
4 Correct 31 ms 31112 KB Output is correct
5 Correct 27 ms 31112 KB Output is correct
6 Correct 33 ms 31112 KB Output is correct
7 Correct 32 ms 31112 KB Output is correct
8 Correct 31 ms 31112 KB Output is correct
9 Correct 41 ms 31112 KB Output is correct
10 Correct 26 ms 31112 KB Output is correct
11 Correct 36 ms 31112 KB Output is correct

Subtask #6
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 24184 KB Output is correct
2 Correct 36 ms 24548 KB Output is correct
3 Correct 41 ms 24616 KB Output is correct
4 Correct 33 ms 24824 KB Output is correct
5 Correct 35 ms 24968 KB Output is correct
6 Correct 33 ms 24968 KB Output is correct
7 Correct 30 ms 25140 KB Output is correct
8 Correct 28 ms 25160 KB Output is correct
9 Correct 37 ms 25244 KB Output is correct
10 Correct 33 ms 25324 KB Output is correct
11 Correct 31 ms 25404 KB Output is correct
12 Correct 27 ms 25404 KB Output is correct
13 Correct 25 ms 25404 KB Output is correct
14 Correct 24 ms 25404 KB Output is correct
15 Correct 28 ms 25404 KB Output is correct
16 Correct 28 ms 25404 KB Output is correct
17 Correct 30 ms 25404 KB Output is correct
18 Correct 26 ms 25404 KB Output is correct
19 Correct 26 ms 25404 KB Output is correct
20 Correct 24 ms 25404 KB Output is correct
21 Correct 27 ms 25404 KB Output is correct
22 Correct 24 ms 25404 KB Output is correct
23 Correct 24 ms 25404 KB Output is correct
24 Correct 26 ms 25404 KB Output is correct
25 Correct 24 ms 25404 KB Output is correct
26 Correct 25 ms 25404 KB Output is correct
27 Correct 24 ms 25404 KB Output is correct
28 Correct 27 ms 25404 KB Output is correct
29 Correct 30 ms 25404 KB Output is correct
30 Correct 27 ms 25404 KB Output is correct
31 Correct 26 ms 25404 KB Output is correct
32 Correct 111 ms 25968 KB Output is correct
33 Correct 202 ms 26132 KB Output is correct
34 Correct 237 ms 26404 KB Output is correct
35 Correct 33 ms 26408 KB Output is correct
36 Correct 44 ms 26744 KB Output is correct
37 Correct 36 ms 26824 KB Output is correct
38 Correct 40 ms 27032 KB Output is correct
39 Correct 33 ms 27284 KB Output is correct
40 Correct 34 ms 27448 KB Output is correct
41 Correct 47 ms 27616 KB Output is correct
42 Correct 43 ms 27896 KB Output is correct
43 Correct 42 ms 27904 KB Output is correct
44 Correct 33 ms 28340 KB Output is correct
45 Correct 38 ms 28620 KB Output is correct
46 Correct 43 ms 28828 KB Output is correct
47 Correct 37 ms 28972 KB Output is correct
48 Correct 31 ms 29172 KB Output is correct
49 Correct 318 ms 29172 KB Output is correct
50 Correct 31 ms 29172 KB Output is correct
51 Correct 32 ms 29240 KB Output is correct
52 Correct 34 ms 29576 KB Output is correct
53 Correct 35 ms 29884 KB Output is correct
54 Correct 34 ms 29964 KB Output is correct
55 Correct 34 ms 30168 KB Output is correct
56 Correct 33 ms 30496 KB Output is correct
57 Correct 40 ms 30568 KB Output is correct
58 Correct 33 ms 30764 KB Output is correct
59 Correct 34 ms 31112 KB Output is correct
60 Correct 39 ms 31112 KB Output is correct
61 Correct 37 ms 31112 KB Output is correct
62 Correct 36 ms 31112 KB Output is correct
63 Correct 32 ms 31112 KB Output is correct
64 Correct 32 ms 31112 KB Output is correct
65 Correct 39 ms 31112 KB Output is correct
66 Correct 34 ms 31112 KB Output is correct
67 Correct 31 ms 31112 KB Output is correct
68 Correct 27 ms 31112 KB Output is correct
69 Correct 33 ms 31112 KB Output is correct
70 Correct 32 ms 31112 KB Output is correct
71 Correct 31 ms 31112 KB Output is correct
72 Correct 41 ms 31112 KB Output is correct
73 Correct 26 ms 31112 KB Output is correct
74 Correct 36 ms 31112 KB Output is correct
75 Correct 103 ms 31556 KB Output is correct
76 Correct 213 ms 31732 KB Output is correct
77 Correct 281 ms 31936 KB Output is correct
78 Correct 245 ms 32144 KB Output is correct
79 Correct 273 ms 32324 KB Output is correct
80 Correct 40 ms 32432 KB Output is correct
81 Correct 42 ms 32820 KB Output is correct
82 Correct 41 ms 32848 KB Output is correct
83 Correct 35 ms 33184 KB Output is correct
84 Correct 37 ms 33380 KB Output is correct
85 Correct 34 ms 33432 KB Output is correct
86 Correct 48 ms 33752 KB Output is correct
87 Correct 32 ms 33888 KB Output is correct
88 Correct 53 ms 34096 KB Output is correct
89 Correct 47 ms 34304 KB Output is correct
90 Correct 48 ms 34640 KB Output is correct
91 Correct 64 ms 34720 KB Output is correct
92 Correct 63 ms 35056 KB Output is correct
93 Correct 53 ms 35136 KB Output is correct
94 Correct 67 ms 35472 KB Output is correct
95 Correct 65 ms 35684 KB Output is correct
96 Correct 91 ms 35684 KB Output is correct
97 Correct 358 ms 36076 KB Output is correct
98 Correct 539 ms 36156 KB Output is correct
99 Correct 609 ms 36356 KB Output is correct
100 Correct 383 ms 36356 KB Output is correct