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Submission #140675

# Submission time Handle Problem Language Result Execution time Memory
140675 2019-08-04T12:03:17 Z khrbuddy03 None (KOI16_treeM) C++14
100 / 100
 185 ms 25816 KB 
#include <bits/stdc++.h>

using namespace std;

const int inf = 2e5 + 9;

int par[inf];

struct query {
    int a, b, c;
    query(int _a, int _b, int _c) : a(_a), b(_b), c(_c) {}
};

struct ds {
    int par[inf];
    int find(int u) {
        if (u == par[u]) return u;
        return par[u] = find(par[u]);
    }
    
    void merge(int u, int v) {
        u = find(u); v = find(v);
        if (u == v) return;
        par[u] = v;
    }
} tree;

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    int n, m; cin >> n >> m;
    for (int i = 1; i <= n; i++) tree.par[i] = i;
    for (int i = 2; i <= n; i++) cin >> par[i];
    vector<query> queries;
    for (int i = 0; i < n - 1 + m; i++) {
        int x; cin >> x;
        if (x == 0) {
            int a; cin >> a;
            queries.emplace_back(0, a, 0);
        } else {
            int a, b; cin >> a >> b;
            queries.emplace_back(1, a, b);
        }
    }
    reverse(queries.begin(), queries.end());
    vector<string> ans;
    for (auto q : queries) {
        if (q.a == 0) tree.merge(q.b, par[q.b]);
        else {
            int u = tree.find(q.b), v = tree.find(q.c);
            if (u == v) ans.push_back("YES");
            else ans.push_back("NO");
        }
    }
    reverse(ans.begin(), ans.end());
    for (auto aa : ans) {
        cout << aa << '\n';
    }
}

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 508 KB Output is correct
2 Correct 3 ms 504 KB Output is correct
3 Correct 3 ms 504 KB Output is correct
4 Correct 3 ms 504 KB Output is correct
5 Correct 3 ms 504 KB Output is correct
6 Correct 3 ms 504 KB Output is correct
7 Correct 3 ms 508 KB Output is correct
8 Correct 3 ms 504 KB Output is correct
9 Correct 3 ms 504 KB Output is correct
10 Correct 3 ms 504 KB Output is correct
11 Correct 3 ms 504 KB Output is correct
12 Correct 3 ms 504 KB Output is correct
13 Correct 3 ms 504 KB Output is correct
14 Correct 3 ms 504 KB Output is correct
15 Correct 3 ms 504 KB Output is correct
16 Correct 3 ms 504 KB Output is correct
17 Correct 3 ms 504 KB Output is correct
18 Correct 3 ms 504 KB Output is correct
19 Correct 3 ms 404 KB Output is correct
20 Correct 3 ms 504 KB Output is correct
21 Correct 3 ms 508 KB Output is correct

Subtask #2
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 508 KB Output is correct
2 Correct 3 ms 504 KB Output is correct
3 Correct 3 ms 504 KB Output is correct
4 Correct 3 ms 504 KB Output is correct
5 Correct 3 ms 504 KB Output is correct
6 Correct 3 ms 504 KB Output is correct
7 Correct 3 ms 508 KB Output is correct
8 Correct 3 ms 504 KB Output is correct
9 Correct 3 ms 504 KB Output is correct
10 Correct 3 ms 504 KB Output is correct
11 Correct 3 ms 504 KB Output is correct
12 Correct 3 ms 504 KB Output is correct
13 Correct 3 ms 504 KB Output is correct
14 Correct 3 ms 504 KB Output is correct
15 Correct 3 ms 504 KB Output is correct
16 Correct 3 ms 504 KB Output is correct
17 Correct 3 ms 504 KB Output is correct
18 Correct 3 ms 504 KB Output is correct
19 Correct 3 ms 404 KB Output is correct
20 Correct 3 ms 504 KB Output is correct
21 Correct 3 ms 508 KB Output is correct
22 Correct 90 ms 15324 KB Output is correct
23 Correct 92 ms 15324 KB Output is correct
24 Correct 90 ms 15220 KB Output is correct
25 Correct 92 ms 15292 KB Output is correct
26 Correct 90 ms 15196 KB Output is correct
27 Correct 94 ms 15188 KB Output is correct
28 Correct 90 ms 15228 KB Output is correct
29 Correct 90 ms 15188 KB Output is correct
30 Correct 94 ms 15316 KB Output is correct
31 Correct 91 ms 15320 KB Output is correct

Subtask #3
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 173 ms 24448 KB Output is correct
2 Correct 170 ms 24420 KB Output is correct
3 Correct 168 ms 24508 KB Output is correct
4 Correct 171 ms 24580 KB Output is correct
5 Correct 173 ms 24532 KB Output is correct
6 Correct 168 ms 24452 KB Output is correct
7 Correct 168 ms 24480 KB Output is correct
8 Correct 170 ms 24876 KB Output is correct
9 Correct 171 ms 25816 KB Output is correct
10 Correct 168 ms 24408 KB Output is correct
11 Correct 166 ms 24372 KB Output is correct

Subtask #4
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 508 KB Output is correct
2 Correct 3 ms 504 KB Output is correct
3 Correct 3 ms 504 KB Output is correct
4 Correct 3 ms 504 KB Output is correct
5 Correct 3 ms 504 KB Output is correct
6 Correct 3 ms 504 KB Output is correct
7 Correct 3 ms 508 KB Output is correct
8 Correct 3 ms 504 KB Output is correct
9 Correct 3 ms 504 KB Output is correct
10 Correct 3 ms 504 KB Output is correct
11 Correct 3 ms 504 KB Output is correct
12 Correct 3 ms 504 KB Output is correct
13 Correct 3 ms 504 KB Output is correct
14 Correct 3 ms 504 KB Output is correct
15 Correct 3 ms 504 KB Output is correct
16 Correct 3 ms 504 KB Output is correct
17 Correct 3 ms 504 KB Output is correct
18 Correct 3 ms 504 KB Output is correct
19 Correct 3 ms 404 KB Output is correct
20 Correct 3 ms 504 KB Output is correct
21 Correct 3 ms 508 KB Output is correct
22 Correct 90 ms 15324 KB Output is correct
23 Correct 92 ms 15324 KB Output is correct
24 Correct 90 ms 15220 KB Output is correct
25 Correct 92 ms 15292 KB Output is correct
26 Correct 90 ms 15196 KB Output is correct
27 Correct 94 ms 15188 KB Output is correct
28 Correct 90 ms 15228 KB Output is correct
29 Correct 90 ms 15188 KB Output is correct
30 Correct 94 ms 15316 KB Output is correct
31 Correct 91 ms 15320 KB Output is correct
32 Correct 173 ms 24448 KB Output is correct
33 Correct 170 ms 24420 KB Output is correct
34 Correct 168 ms 24508 KB Output is correct
35 Correct 171 ms 24580 KB Output is correct
36 Correct 173 ms 24532 KB Output is correct
37 Correct 168 ms 24452 KB Output is correct
38 Correct 168 ms 24480 KB Output is correct
39 Correct 170 ms 24876 KB Output is correct
40 Correct 171 ms 25816 KB Output is correct
41 Correct 168 ms 24408 KB Output is correct
42 Correct 166 ms 24372 KB Output is correct
43 Correct 182 ms 25012 KB Output is correct
44 Correct 185 ms 25160 KB Output is correct
45 Correct 181 ms 25028 KB Output is correct
46 Correct 170 ms 25112 KB Output is correct
47 Correct 165 ms 25048 KB Output is correct
48 Correct 159 ms 24924 KB Output is correct
49 Correct 173 ms 25060 KB Output is correct
50 Correct 163 ms 25016 KB Output is correct
51 Correct 163 ms 25152 KB Output is correct