oj.uz

Submission #247027

# Submission time Handle Problem Language Result Execution time Memory
247027 2020-07-10T19:26:48 Z dolphingarlic Monthly railway pass (LMIO18_menesinis_bilietas) C++14
100 / 100
 664 ms 66912 KB 
#include <bits/stdc++.h>
#define FOR(i, x, y) for (int i = x; i < y; i++)
typedef long long ll;
using namespace std;

int cmp[500001], cmp_cnt;
set<int> graph[500001];

int find(int A) {
    while (A != cmp[A]) cmp[A] = cmp[cmp[A]], A = cmp[A];
    return A;
}

void onion(int A, int B) {
    if (find(A) == find(B)) return;
    cmp[find(A)] = find(B);
    cmp_cnt--;
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n, m;
    cin >> n >> m;
    iota(cmp, cmp + n + 1, 0);
    cmp_cnt = n;
    vector<pair<int, int>> bus;
    while (m--) {
        int u, v;
        char t;
        cin >> u >> v >> t;
        if (t == 'A') bus.push_back({u, v});
        else onion(u, v);
    }
    for (pair<int, int> i : bus) {
        if (find(i.first) == find(i.second)) continue;
        graph[find(i.first)].insert(find(i.second));
        graph[find(i.second)].insert(find(i.first));
    }

    int ans = 0;
    FOR(i, 1, n + 1) if (graph[find(i)].size() == cmp_cnt - 1) ans++;
    cout << ans;
    return 0;
}

Compilation message

menesinis_bilietas.cpp: In function 'int main()':
menesinis_bilietas.cpp:42:48: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     FOR(i, 1, n + 1) if (graph[find(i)].size() == cmp_cnt - 1) ans++;
                          ~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 162 ms 24960 KB Output is correct
2 Correct 19 ms 23784 KB Output is correct
3 Correct 18 ms 23808 KB Output is correct
4 Correct 21 ms 25728 KB Output is correct
5 Correct 18 ms 23808 KB Output is correct
6 Correct 51 ms 23808 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 25728 KB Output is correct
2 Correct 18 ms 23808 KB Output is correct
3 Correct 20 ms 23936 KB Output is correct
4 Correct 22 ms 24576 KB Output is correct
5 Correct 18 ms 23808 KB Output is correct
6 Correct 556 ms 57616 KB Output is correct
7 Correct 664 ms 66912 KB Output is correct
8 Correct 27 ms 25344 KB Output is correct
9 Correct 35 ms 26744 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 23808 KB Output is correct
2 Correct 20 ms 23800 KB Output is correct
3 Correct 19 ms 23948 KB Output is correct
4 Correct 19 ms 23936 KB Output is correct
5 Correct 21 ms 24064 KB Output is correct
6 Correct 20 ms 24192 KB Output is correct
7 Correct 18 ms 23808 KB Output is correct
8 Correct 20 ms 23808 KB Output is correct
9 Correct 22 ms 24192 KB Output is correct
10 Correct 19 ms 23808 KB Output is correct
11 Correct 19 ms 23936 KB Output is correct
12 Correct 18 ms 23840 KB Output is correct
13 Correct 19 ms 23936 KB Output is correct
14 Correct 18 ms 23936 KB Output is correct
15 Correct 19 ms 24064 KB Output is correct
16 Correct 19 ms 23784 KB Output is correct
17 Correct 18 ms 23808 KB Output is correct
18 Correct 18 ms 23808 KB Output is correct
19 Correct 20 ms 23936 KB Output is correct
20 Correct 22 ms 24576 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 23808 KB Output is correct
2 Correct 20 ms 23800 KB Output is correct
3 Correct 19 ms 23948 KB Output is correct
4 Correct 19 ms 23936 KB Output is correct
5 Correct 21 ms 24064 KB Output is correct
6 Correct 20 ms 24192 KB Output is correct
7 Correct 18 ms 23808 KB Output is correct
8 Correct 20 ms 23808 KB Output is correct
9 Correct 22 ms 24192 KB Output is correct
10 Correct 19 ms 23808 KB Output is correct
11 Correct 19 ms 23936 KB Output is correct
12 Correct 18 ms 23840 KB Output is correct
13 Correct 19 ms 23936 KB Output is correct
14 Correct 18 ms 23936 KB Output is correct
15 Correct 19 ms 24064 KB Output is correct
16 Correct 27 ms 24576 KB Output is correct
17 Correct 166 ms 31852 KB Output is correct
18 Correct 75 ms 27500 KB Output is correct
19 Correct 221 ms 38760 KB Output is correct
20 Correct 64 ms 26480 KB Output is correct
21 Correct 156 ms 36712 KB Output is correct
22 Correct 19 ms 23784 KB Output is correct
23 Correct 18 ms 23808 KB Output is correct
24 Correct 18 ms 23808 KB Output is correct
25 Correct 20 ms 23936 KB Output is correct
26 Correct 22 ms 24576 KB Output is correct
27 Correct 18 ms 23808 KB Output is correct
28 Correct 27 ms 25344 KB Output is correct
29 Correct 35 ms 26744 KB Output is correct
30 Correct 51 ms 23808 KB Output is correct

Subtask #5
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 23808 KB Output is correct
2 Correct 20 ms 23800 KB Output is correct
3 Correct 19 ms 23948 KB Output is correct
4 Correct 19 ms 23936 KB Output is correct
5 Correct 21 ms 24064 KB Output is correct
6 Correct 20 ms 24192 KB Output is correct
7 Correct 18 ms 23808 KB Output is correct
8 Correct 20 ms 23808 KB Output is correct
9 Correct 22 ms 24192 KB Output is correct
10 Correct 19 ms 23808 KB Output is correct
11 Correct 19 ms 23936 KB Output is correct
12 Correct 18 ms 23840 KB Output is correct
13 Correct 19 ms 23936 KB Output is correct
14 Correct 18 ms 23936 KB Output is correct
15 Correct 19 ms 24064 KB Output is correct
16 Correct 27 ms 24576 KB Output is correct
17 Correct 166 ms 31852 KB Output is correct
18 Correct 75 ms 27500 KB Output is correct
19 Correct 221 ms 38760 KB Output is correct
20 Correct 64 ms 26480 KB Output is correct
21 Correct 156 ms 36712 KB Output is correct
22 Correct 162 ms 24960 KB Output is correct
23 Correct 19 ms 23784 KB Output is correct
24 Correct 18 ms 23808 KB Output is correct
25 Correct 21 ms 25728 KB Output is correct
26 Correct 18 ms 23808 KB Output is correct
27 Correct 20 ms 23936 KB Output is correct
28 Correct 22 ms 24576 KB Output is correct
29 Correct 18 ms 23808 KB Output is correct
30 Correct 556 ms 57616 KB Output is correct
31 Correct 664 ms 66912 KB Output is correct
32 Correct 48 ms 26740 KB Output is correct
33 Correct 292 ms 37576 KB Output is correct
34 Correct 77 ms 27792 KB Output is correct
35 Correct 27 ms 25344 KB Output is correct
36 Correct 35 ms 26744 KB Output is correct
37 Correct 51 ms 23808 KB Output is correct