oj.uz

Submission #641883

# Submission time Handle Problem Language Result Execution time Memory
641883 2022-09-17T18:26:25 Z piOOE Toy Train (IOI17_train) C++17
100 / 100
 533 ms 1652 KB 
#include <bits/stdc++.h>
#include "train.h"

using namespace std;

constexpr int N = 5000;

vector<int> rev[N], g[N], a;
int n;

void bfs(vector<int> &used, int player) {
    vector<int> degree(n);
    queue<int> q;
    for (int i = 0; i < n; ++i) {
        if (used[i]) {
            q.push(i);
        }
    }

    while (!q.empty()) {
        int v = q.front();
        q.pop();
        for (int to: rev[v]) {
            if (!used[to] && (a[to] == player || ++degree[to] == g[to].size())) {
                used[to] = true;
                q.push(to);
            }
        }
    }
}

std::vector<int> who_wins(std::vector<int> a, std::vector<int> r, std::vector<int> A, std::vector<int> B) {
    ::a = a;
    n = a.size();
    for (int i = 0; i < A.size(); ++i) {
        g[A[i]].push_back(B[i]);
        rev[B[i]].push_back(A[i]);
    }
    bool found = true;
    while (found) {
        found = false;
        vector<int> used = r;
        bfs(used, 1);
        for (int &i: used) {
            i ^= 1;
        }
        bfs(used, 0);
        for (int i = 0; i < n; ++i) {
            if (r[i] == 1 && used[i]) {
                r[i] = 0;
                found = true;
            }
        }
    }
    vector<int> ans = r;
    bfs(ans, 1);
    return ans;
}

Compilation message

train.cpp: In function 'void bfs(std::vector<int>&, int)':
train.cpp:24:63: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |             if (!used[to] && (a[to] == player || ++degree[to] == g[to].size())) {
      |                                                  ~~~~~~~~~~~~~^~~~~~~~~~~~~~~
train.cpp: In function 'std::vector<int> who_wins(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
train.cpp:35:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |     for (int i = 0; i < A.size(); ++i) {
      |                     ~~^~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 1108 KB Output is correct
2 Correct 5 ms 1108 KB Output is correct
3 Correct 5 ms 1108 KB Output is correct
4 Correct 5 ms 1108 KB Output is correct
5 Correct 4 ms 1108 KB Output is correct
6 Correct 5 ms 1108 KB Output is correct
7 Correct 4 ms 1108 KB Output is correct
8 Correct 5 ms 1108 KB Output is correct
9 Correct 4 ms 1108 KB Output is correct
10 Correct 4 ms 1108 KB Output is correct
11 Correct 3 ms 1068 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 468 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 1 ms 468 KB Output is correct
7 Correct 1 ms 468 KB Output is correct
8 Correct 0 ms 468 KB Output is correct
9 Correct 1 ms 468 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 1 ms 596 KB Output is correct
14 Correct 1 ms 544 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 1 ms 468 KB Output is correct
19 Correct 1 ms 468 KB Output is correct
20 Correct 1 ms 468 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 66 ms 1652 KB Output is correct
2 Correct 123 ms 1648 KB Output is correct
3 Correct 178 ms 1632 KB Output is correct
4 Correct 7 ms 1576 KB Output is correct
5 Correct 10 ms 1620 KB Output is correct
6 Correct 8 ms 1576 KB Output is correct
7 Correct 8 ms 1572 KB Output is correct
8 Correct 7 ms 1608 KB Output is correct
9 Correct 6 ms 1572 KB Output is correct
10 Correct 6 ms 1492 KB Output is correct
11 Correct 7 ms 1560 KB Output is correct
12 Correct 8 ms 1496 KB Output is correct
13 Correct 7 ms 1620 KB Output is correct
14 Correct 7 ms 1620 KB Output is correct
15 Correct 7 ms 1620 KB Output is correct
16 Correct 7 ms 1632 KB Output is correct
17 Correct 8 ms 1576 KB Output is correct
18 Correct 270 ms 1260 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 1364 KB Output is correct
2 Correct 7 ms 1492 KB Output is correct
3 Correct 7 ms 1572 KB Output is correct
4 Correct 7 ms 1580 KB Output is correct
5 Correct 7 ms 1620 KB Output is correct
6 Correct 7 ms 1568 KB Output is correct
7 Correct 7 ms 1492 KB Output is correct
8 Correct 7 ms 1572 KB Output is correct
9 Correct 7 ms 1468 KB Output is correct
10 Correct 7 ms 1572 KB Output is correct
11 Correct 7 ms 1584 KB Output is correct
12 Correct 8 ms 1620 KB Output is correct
13 Correct 7 ms 1624 KB Output is correct
14 Correct 8 ms 1412 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 1620 KB Output is correct
2 Correct 7 ms 1608 KB Output is correct
3 Correct 7 ms 1576 KB Output is correct
4 Correct 7 ms 1492 KB Output is correct
5 Correct 1 ms 596 KB Output is correct
6 Correct 4 ms 1088 KB Output is correct
7 Correct 5 ms 1236 KB Output is correct
8 Correct 5 ms 1236 KB Output is correct
9 Correct 5 ms 1236 KB Output is correct
10 Correct 2 ms 672 KB Output is correct
11 Correct 5 ms 1108 KB Output is correct

Subtask #6
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 1108 KB Output is correct
2 Correct 5 ms 1108 KB Output is correct
3 Correct 5 ms 1108 KB Output is correct
4 Correct 5 ms 1108 KB Output is correct
5 Correct 4 ms 1108 KB Output is correct
6 Correct 5 ms 1108 KB Output is correct
7 Correct 4 ms 1108 KB Output is correct
8 Correct 5 ms 1108 KB Output is correct
9 Correct 4 ms 1108 KB Output is correct
10 Correct 4 ms 1108 KB Output is correct
11 Correct 3 ms 1068 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 1 ms 468 KB Output is correct
19 Correct 0 ms 468 KB Output is correct
20 Correct 1 ms 468 KB Output is correct
21 Correct 1 ms 468 KB Output is correct
22 Correct 1 ms 468 KB Output is correct
23 Correct 1 ms 468 KB Output is correct
24 Correct 1 ms 596 KB Output is correct
25 Correct 1 ms 544 KB Output is correct
26 Correct 1 ms 468 KB Output is correct
27 Correct 1 ms 468 KB Output is correct
28 Correct 1 ms 468 KB Output is correct
29 Correct 1 ms 468 KB Output is correct
30 Correct 1 ms 468 KB Output is correct
31 Correct 1 ms 468 KB Output is correct
32 Correct 66 ms 1652 KB Output is correct
33 Correct 123 ms 1648 KB Output is correct
34 Correct 178 ms 1632 KB Output is correct
35 Correct 7 ms 1576 KB Output is correct
36 Correct 10 ms 1620 KB Output is correct
37 Correct 8 ms 1576 KB Output is correct
38 Correct 8 ms 1572 KB Output is correct
39 Correct 7 ms 1608 KB Output is correct
40 Correct 6 ms 1572 KB Output is correct
41 Correct 6 ms 1492 KB Output is correct
42 Correct 7 ms 1560 KB Output is correct
43 Correct 8 ms 1496 KB Output is correct
44 Correct 7 ms 1620 KB Output is correct
45 Correct 7 ms 1620 KB Output is correct
46 Correct 7 ms 1620 KB Output is correct
47 Correct 7 ms 1632 KB Output is correct
48 Correct 8 ms 1576 KB Output is correct
49 Correct 270 ms 1260 KB Output is correct
50 Correct 6 ms 1364 KB Output is correct
51 Correct 7 ms 1492 KB Output is correct
52 Correct 7 ms 1572 KB Output is correct
53 Correct 7 ms 1580 KB Output is correct
54 Correct 7 ms 1620 KB Output is correct
55 Correct 7 ms 1568 KB Output is correct
56 Correct 7 ms 1492 KB Output is correct
57 Correct 7 ms 1572 KB Output is correct
58 Correct 7 ms 1468 KB Output is correct
59 Correct 7 ms 1572 KB Output is correct
60 Correct 7 ms 1584 KB Output is correct
61 Correct 8 ms 1620 KB Output is correct
62 Correct 7 ms 1624 KB Output is correct
63 Correct 8 ms 1412 KB Output is correct
64 Correct 7 ms 1620 KB Output is correct
65 Correct 7 ms 1608 KB Output is correct
66 Correct 7 ms 1576 KB Output is correct
67 Correct 7 ms 1492 KB Output is correct
68 Correct 1 ms 596 KB Output is correct
69 Correct 4 ms 1088 KB Output is correct
70 Correct 5 ms 1236 KB Output is correct
71 Correct 5 ms 1236 KB Output is correct
72 Correct 5 ms 1236 KB Output is correct
73 Correct 2 ms 672 KB Output is correct
74 Correct 5 ms 1108 KB Output is correct
75 Correct 138 ms 1620 KB Output is correct
76 Correct 178 ms 1652 KB Output is correct
77 Correct 244 ms 1648 KB Output is correct
78 Correct 240 ms 1644 KB Output is correct
79 Correct 266 ms 1640 KB Output is correct
80 Correct 8 ms 1576 KB Output is correct
81 Correct 8 ms 1576 KB Output is correct
82 Correct 8 ms 1620 KB Output is correct
83 Correct 8 ms 1620 KB Output is correct
84 Correct 8 ms 1608 KB Output is correct
85 Correct 7 ms 1588 KB Output is correct
86 Correct 8 ms 1624 KB Output is correct
87 Correct 8 ms 1552 KB Output is correct
88 Correct 10 ms 1632 KB Output is correct
89 Correct 8 ms 1620 KB Output is correct
90 Correct 13 ms 1620 KB Output is correct
91 Correct 14 ms 1616 KB Output is correct
92 Correct 21 ms 1620 KB Output is correct
93 Correct 21 ms 1608 KB Output is correct
94 Correct 21 ms 1616 KB Output is correct
95 Correct 22 ms 1636 KB Output is correct
96 Correct 67 ms 1524 KB Output is correct
97 Correct 325 ms 1616 KB Output is correct
98 Correct 494 ms 1580 KB Output is correct
99 Correct 533 ms 1560 KB Output is correct
100 Correct 284 ms 1248 KB Output is correct