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Submission #70881

# Submission time Handle Problem Language Result Execution time Memory
70881 2018-08-23T15:12:24 Z aquablitz11 Toy Train (IOI17_train) C++14
100 / 100
 892 ms 15760 KB 
#include <bits/stdc++.h>
#include "train.h"
using namespace std;
 
using pii = pair<int, int>;
 
const int N = 5e3+10;

vector<int> G[N], R[N];
int need[N];
bool win[N];

void dfs(int u, int r=0) {
    need[u] = 0;
    if (!r) win[u] = true;
    for (auto v : R[u]) if (--need[v] == 0)
        dfs(v, r);
}

vector<int> who_wins(vector<int> A, vector<int> C, vector<int> U, vector<int> V)
{
    int n = A.size();
    int m = U.size();
    for (int i = 0; i < m; ++i) {
        G[U[i]].push_back(V[i]);
        R[V[i]].push_back(U[i]);
    }

    while (true) {
        // find all nodes that A can force to charger
        for (int u = 0; u < n; ++u)
            win[u] = false, need[u] = A[u] ? 1 : (int)G[u].size();
        for (int u = 0; u < n; ++u) if (C[u] && need[u] > 0)
            dfs(u);
        // for nodes that A can't force, find which nodes B could force movement from
        for (int u = 0; u < n; ++u)
            need[u] = A[u] ? (int)G[u].size() : 1;
        for (int u = 0; u < n; ++u) if (!win[u] && need[u] > 0)
            dfs(u, 1);
        // if B could win on some charger, remove charger
        bool mod = false;
        for (int u = 0; u < n; ++u) if (need[u] <= 0 && C[u])
            C[u] = false, mod = true;
        if (!mod) break;
    }

    vector<int> ans(n);
    for (int u = 0; u < n; ++u) if (need[u] > 0)
        ans[u] = 1;
    return ans;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 1144 KB Output is correct
2 Correct 14 ms 1208 KB Output is correct
3 Correct 11 ms 1536 KB Output is correct
4 Correct 11 ms 1836 KB Output is correct
5 Correct 8 ms 1836 KB Output is correct
6 Correct 9 ms 2020 KB Output is correct
7 Correct 8 ms 2020 KB Output is correct
8 Correct 10 ms 2072 KB Output is correct
9 Correct 8 ms 2156 KB Output is correct
10 Correct 9 ms 2236 KB Output is correct
11 Correct 8 ms 2316 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2316 KB Output is correct
2 Correct 3 ms 2316 KB Output is correct
3 Correct 3 ms 2316 KB Output is correct
4 Correct 4 ms 2316 KB Output is correct
5 Correct 3 ms 2316 KB Output is correct
6 Correct 3 ms 2316 KB Output is correct
7 Correct 4 ms 2316 KB Output is correct
8 Correct 4 ms 2316 KB Output is correct
9 Correct 3 ms 2316 KB Output is correct
10 Correct 5 ms 2316 KB Output is correct
11 Correct 3 ms 2316 KB Output is correct
12 Correct 3 ms 2316 KB Output is correct
13 Correct 3 ms 2316 KB Output is correct
14 Correct 3 ms 2316 KB Output is correct
15 Correct 3 ms 2316 KB Output is correct
16 Correct 2 ms 2316 KB Output is correct
17 Correct 3 ms 2316 KB Output is correct
18 Correct 3 ms 2316 KB Output is correct
19 Correct 3 ms 2316 KB Output is correct
20 Correct 3 ms 2316 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 113 ms 3112 KB Output is correct
2 Correct 241 ms 3364 KB Output is correct
3 Correct 349 ms 3656 KB Output is correct
4 Correct 22 ms 3656 KB Output is correct
5 Correct 12 ms 3848 KB Output is correct
6 Correct 15 ms 4056 KB Output is correct
7 Correct 22 ms 4136 KB Output is correct
8 Correct 22 ms 4468 KB Output is correct
9 Correct 20 ms 4548 KB Output is correct
10 Correct 11 ms 4724 KB Output is correct
11 Correct 14 ms 4920 KB Output is correct
12 Correct 10 ms 5112 KB Output is correct
13 Correct 12 ms 5424 KB Output is correct
14 Correct 15 ms 5760 KB Output is correct
15 Correct 18 ms 5872 KB Output is correct
16 Correct 13 ms 6124 KB Output is correct
17 Correct 13 ms 6256 KB Output is correct
18 Correct 545 ms 6256 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 6324 KB Output is correct
2 Correct 11 ms 6612 KB Output is correct
3 Correct 12 ms 6792 KB Output is correct
4 Correct 13 ms 7108 KB Output is correct
5 Correct 12 ms 7336 KB Output is correct
6 Correct 14 ms 7412 KB Output is correct
7 Correct 13 ms 7612 KB Output is correct
8 Correct 16 ms 7812 KB Output is correct
9 Correct 15 ms 8008 KB Output is correct
10 Correct 14 ms 8320 KB Output is correct
11 Correct 13 ms 8528 KB Output is correct
12 Correct 12 ms 8736 KB Output is correct
13 Correct 14 ms 8948 KB Output is correct
14 Correct 13 ms 8956 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 9336 KB Output is correct
2 Correct 12 ms 9536 KB Output is correct
3 Correct 14 ms 9744 KB Output is correct
4 Correct 14 ms 9824 KB Output is correct
5 Correct 4 ms 9824 KB Output is correct
6 Correct 10 ms 9824 KB Output is correct
7 Correct 8 ms 9848 KB Output is correct
8 Correct 9 ms 10020 KB Output is correct
9 Correct 8 ms 10132 KB Output is correct
10 Correct 6 ms 10132 KB Output is correct
11 Correct 8 ms 10308 KB Output is correct

Subtask #6
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 1144 KB Output is correct
2 Correct 14 ms 1208 KB Output is correct
3 Correct 11 ms 1536 KB Output is correct
4 Correct 11 ms 1836 KB Output is correct
5 Correct 8 ms 1836 KB Output is correct
6 Correct 9 ms 2020 KB Output is correct
7 Correct 8 ms 2020 KB Output is correct
8 Correct 10 ms 2072 KB Output is correct
9 Correct 8 ms 2156 KB Output is correct
10 Correct 9 ms 2236 KB Output is correct
11 Correct 8 ms 2316 KB Output is correct
12 Correct 3 ms 2316 KB Output is correct
13 Correct 3 ms 2316 KB Output is correct
14 Correct 3 ms 2316 KB Output is correct
15 Correct 4 ms 2316 KB Output is correct
16 Correct 3 ms 2316 KB Output is correct
17 Correct 3 ms 2316 KB Output is correct
18 Correct 4 ms 2316 KB Output is correct
19 Correct 4 ms 2316 KB Output is correct
20 Correct 3 ms 2316 KB Output is correct
21 Correct 5 ms 2316 KB Output is correct
22 Correct 3 ms 2316 KB Output is correct
23 Correct 3 ms 2316 KB Output is correct
24 Correct 3 ms 2316 KB Output is correct
25 Correct 3 ms 2316 KB Output is correct
26 Correct 3 ms 2316 KB Output is correct
27 Correct 2 ms 2316 KB Output is correct
28 Correct 3 ms 2316 KB Output is correct
29 Correct 3 ms 2316 KB Output is correct
30 Correct 3 ms 2316 KB Output is correct
31 Correct 3 ms 2316 KB Output is correct
32 Correct 113 ms 3112 KB Output is correct
33 Correct 241 ms 3364 KB Output is correct
34 Correct 349 ms 3656 KB Output is correct
35 Correct 22 ms 3656 KB Output is correct
36 Correct 12 ms 3848 KB Output is correct
37 Correct 15 ms 4056 KB Output is correct
38 Correct 22 ms 4136 KB Output is correct
39 Correct 22 ms 4468 KB Output is correct
40 Correct 20 ms 4548 KB Output is correct
41 Correct 11 ms 4724 KB Output is correct
42 Correct 14 ms 4920 KB Output is correct
43 Correct 10 ms 5112 KB Output is correct
44 Correct 12 ms 5424 KB Output is correct
45 Correct 15 ms 5760 KB Output is correct
46 Correct 18 ms 5872 KB Output is correct
47 Correct 13 ms 6124 KB Output is correct
48 Correct 13 ms 6256 KB Output is correct
49 Correct 545 ms 6256 KB Output is correct
50 Correct 11 ms 6324 KB Output is correct
51 Correct 11 ms 6612 KB Output is correct
52 Correct 12 ms 6792 KB Output is correct
53 Correct 13 ms 7108 KB Output is correct
54 Correct 12 ms 7336 KB Output is correct
55 Correct 14 ms 7412 KB Output is correct
56 Correct 13 ms 7612 KB Output is correct
57 Correct 16 ms 7812 KB Output is correct
58 Correct 15 ms 8008 KB Output is correct
59 Correct 14 ms 8320 KB Output is correct
60 Correct 13 ms 8528 KB Output is correct
61 Correct 12 ms 8736 KB Output is correct
62 Correct 14 ms 8948 KB Output is correct
63 Correct 13 ms 8956 KB Output is correct
64 Correct 15 ms 9336 KB Output is correct
65 Correct 12 ms 9536 KB Output is correct
66 Correct 14 ms 9744 KB Output is correct
67 Correct 14 ms 9824 KB Output is correct
68 Correct 4 ms 9824 KB Output is correct
69 Correct 10 ms 9824 KB Output is correct
70 Correct 8 ms 9848 KB Output is correct
71 Correct 9 ms 10020 KB Output is correct
72 Correct 8 ms 10132 KB Output is correct
73 Correct 6 ms 10132 KB Output is correct
74 Correct 8 ms 10308 KB Output is correct
75 Correct 99 ms 10824 KB Output is correct
76 Correct 255 ms 11232 KB Output is correct
77 Correct 410 ms 11332 KB Output is correct
78 Correct 414 ms 11696 KB Output is correct
79 Correct 379 ms 11784 KB Output is correct
80 Correct 22 ms 11860 KB Output is correct
81 Correct 14 ms 12068 KB Output is correct
82 Correct 16 ms 12276 KB Output is correct
83 Correct 13 ms 12484 KB Output is correct
84 Correct 15 ms 12692 KB Output is correct
85 Correct 13 ms 12900 KB Output is correct
86 Correct 15 ms 13108 KB Output is correct
87 Correct 14 ms 13284 KB Output is correct
88 Correct 19 ms 13492 KB Output is correct
89 Correct 15 ms 13708 KB Output is correct
90 Correct 20 ms 13940 KB Output is correct
91 Correct 25 ms 14148 KB Output is correct
92 Correct 35 ms 14356 KB Output is correct
93 Correct 36 ms 14436 KB Output is correct
94 Correct 38 ms 14772 KB Output is correct
95 Correct 43 ms 14980 KB Output is correct
96 Correct 80 ms 15080 KB Output is correct
97 Correct 478 ms 15376 KB Output is correct
98 Correct 706 ms 15584 KB Output is correct
99 Correct 892 ms 15760 KB Output is correct
100 Correct 620 ms 15760 KB Output is correct