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Submission #961921

# Submission time Handle Problem Language Result Execution time Memory
961921 2024-04-12T18:38:26 Z Irate Monthly railway pass (LMIO18_menesinis_bilietas) C++17
100 / 100
 314 ms 51768 KB 
#include <bits/stdc++.h>
using namespace std;
const int mxN = 5e5 + 5;
struct DSU{
    vector<int>par;
    int comps;
    DSU(int n){
        par.assign(n + 1, -1);
        comps = n;
    }
    int FindRep(int u){
        if(par[u] < 0)return u;
        return par[u] = FindRep(par[u]);
    }
    void Union(int u, int v){
        u = FindRep(u);
        v = FindRep(v);
        if(u == v)return;
        if(par[u] > par[v])swap(u, v);
        par[u] += par[v];
        par[v] = u;
        comps--;
    }
};
struct T{
    int u, v;
    char c;
};
vector<int> G[mxN];
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n, m;
    cin >> n >> m;
    /// A - bus, T - train
    vector<T>edges(m);
    DSU dsu(n);
    for(int i = 0;i < m;++i){
        int u, v;
        char c;
        cin >> u >> v >> c;
        edges[i] = {u, v, c};
        if(c == 'T')dsu.Union(u, v);
    }
    set<pair<int, int>>s;
    for(int i = 0;i < m;++i){
        int u = dsu.FindRep(edges[i].u), v = dsu.FindRep(edges[i].v), c = edges[i].c;
        if(c == 'T' || u == v)continue;
        s.insert({u, v});
    }
    for(auto i : s){
        int u = i.first, v = i.second;
        G[u].push_back(v);
        G[v].push_back(u);
    }
    int res = 0, comps = dsu.comps;
    for(int i = 1;i <= n;++i){
        int u = dsu.FindRep(i);
        res += ((int)G[u].size() == comps - 1);
    }
    cout << res << '\n';
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 88 ms 18744 KB Output is correct
2 Correct 3 ms 12124 KB Output is correct
3 Correct 5 ms 12124 KB Output is correct
4 Correct 5 ms 13912 KB Output is correct
5 Correct 3 ms 12124 KB Output is correct
6 Correct 28 ms 14428 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 13912 KB Output is correct
2 Correct 3 ms 12124 KB Output is correct
3 Correct 4 ms 12120 KB Output is correct
4 Correct 3 ms 12124 KB Output is correct
5 Correct 7 ms 12636 KB Output is correct
6 Correct 224 ms 35308 KB Output is correct
7 Correct 314 ms 51768 KB Output is correct
8 Correct 9 ms 13656 KB Output is correct
9 Correct 17 ms 14464 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 12124 KB Output is correct
2 Correct 5 ms 12124 KB Output is correct
3 Correct 4 ms 12120 KB Output is correct
4 Correct 3 ms 12124 KB Output is correct
5 Correct 7 ms 12636 KB Output is correct
6 Correct 3 ms 12124 KB Output is correct
7 Correct 3 ms 12200 KB Output is correct
8 Correct 4 ms 12124 KB Output is correct
9 Correct 4 ms 12124 KB Output is correct
10 Correct 5 ms 12376 KB Output is correct
11 Correct 5 ms 12376 KB Output is correct
12 Correct 3 ms 12120 KB Output is correct
13 Correct 3 ms 12120 KB Output is correct
14 Correct 6 ms 12376 KB Output is correct
15 Correct 3 ms 12124 KB Output is correct
16 Correct 3 ms 12128 KB Output is correct
17 Correct 3 ms 12124 KB Output is correct
18 Correct 5 ms 12124 KB Output is correct
19 Correct 3 ms 12124 KB Output is correct
20 Correct 4 ms 12124 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 12124 KB Output is correct
2 Correct 3 ms 12200 KB Output is correct
3 Correct 4 ms 12124 KB Output is correct
4 Correct 4 ms 12124 KB Output is correct
5 Correct 5 ms 12376 KB Output is correct
6 Correct 5 ms 12376 KB Output is correct
7 Correct 3 ms 12120 KB Output is correct
8 Correct 3 ms 12120 KB Output is correct
9 Correct 6 ms 12376 KB Output is correct
10 Correct 3 ms 12124 KB Output is correct
11 Correct 3 ms 12128 KB Output is correct
12 Correct 3 ms 12124 KB Output is correct
13 Correct 5 ms 12124 KB Output is correct
14 Correct 3 ms 12124 KB Output is correct
15 Correct 4 ms 12124 KB Output is correct
16 Correct 3 ms 12124 KB Output is correct
17 Correct 5 ms 12124 KB Output is correct
18 Correct 4 ms 12120 KB Output is correct
19 Correct 3 ms 12124 KB Output is correct
20 Correct 7 ms 12636 KB Output is correct
21 Correct 3 ms 12124 KB Output is correct
22 Correct 9 ms 13656 KB Output is correct
23 Correct 17 ms 14464 KB Output is correct
24 Correct 28 ms 14428 KB Output is correct
25 Correct 9 ms 12832 KB Output is correct
26 Correct 86 ms 21492 KB Output is correct
27 Correct 34 ms 15680 KB Output is correct
28 Correct 95 ms 23236 KB Output is correct
29 Correct 29 ms 14940 KB Output is correct
30 Correct 70 ms 22380 KB Output is correct

Subtask #5
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 12124 KB Output is correct
2 Correct 3 ms 12200 KB Output is correct
3 Correct 4 ms 12124 KB Output is correct
4 Correct 4 ms 12124 KB Output is correct
5 Correct 5 ms 12376 KB Output is correct
6 Correct 5 ms 12376 KB Output is correct
7 Correct 3 ms 12120 KB Output is correct
8 Correct 3 ms 12120 KB Output is correct
9 Correct 6 ms 12376 KB Output is correct
10 Correct 3 ms 12124 KB Output is correct
11 Correct 3 ms 12128 KB Output is correct
12 Correct 3 ms 12124 KB Output is correct
13 Correct 5 ms 12124 KB Output is correct
14 Correct 3 ms 12124 KB Output is correct
15 Correct 4 ms 12124 KB Output is correct
16 Correct 9 ms 12832 KB Output is correct
17 Correct 86 ms 21492 KB Output is correct
18 Correct 34 ms 15680 KB Output is correct
19 Correct 95 ms 23236 KB Output is correct
20 Correct 29 ms 14940 KB Output is correct
21 Correct 70 ms 22380 KB Output is correct
22 Correct 88 ms 18744 KB Output is correct
23 Correct 3 ms 12124 KB Output is correct
24 Correct 5 ms 12124 KB Output is correct
25 Correct 5 ms 13912 KB Output is correct
26 Correct 4 ms 12120 KB Output is correct
27 Correct 3 ms 12124 KB Output is correct
28 Correct 7 ms 12636 KB Output is correct
29 Correct 3 ms 12124 KB Output is correct
30 Correct 224 ms 35308 KB Output is correct
31 Correct 314 ms 51768 KB Output is correct
32 Correct 9 ms 13656 KB Output is correct
33 Correct 17 ms 14464 KB Output is correct
34 Correct 28 ms 14428 KB Output is correct
35 Correct 25 ms 14676 KB Output is correct
36 Correct 135 ms 26624 KB Output is correct
37 Correct 46 ms 18260 KB Output is correct