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Submission #547602

# Submission time Handle Problem Language Result Execution time Memory
547602 2022-04-11T04:37:08 Z Olympia Cat in a tree (BOI17_catinatree) C++17
100 / 100
 163 ms 16812 KB 
#include <cmath>
#include <iostream>
#include <set>
#include <climits>
#include <algorithm>
#include <cassert>
#include <vector>
#include <iomanip>
#include <type_traits>
#include <string>
#include <queue>
#include <map>

#pragma GCC target ("avx2")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")
using namespace std;
vector<vector<int>> adj;
vector<pair<int,int>> vec;
vector<int> parent;
vector<bool> isValid;
vector<int> marked;
vector<int> qr;
bool comp (pair<int,int> p1, pair<int,int> p2) {
    return (p1.second > p2.second);
}
void go_down (int curNode, int d) {
    if (d == 0) return;
    if (marked[curNode] >= d) return;
    marked[curNode] = d;
    isValid[curNode] = false;
    for (int i: adj[curNode]) go_down(i, d - 1);
}
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int N, D;
    cin >> N >> D;
    adj.resize(N), vec.assign(N, {-1, -1}), isValid.assign(N, true), parent.resize(N), marked.assign(N, -1);
    for (int i = 1; i < N; i++) {
        int x; cin >> x;
        adj[x].push_back(i), adj[i].push_back(x);
    }
    queue<pair<int,int>> q;
    q.push({0, 0});
    while (!q.empty()) {
        pair<int,int> pr = q.front();
        q.pop();
        if (vec[pr.first].first != -1) {
            continue;
        }
        vec[pr.first] = pr;
        for (int i: adj[pr.first]) {
            q.push({i, pr.second + 1});
        }
    }
    sort(vec.begin(), vec.end(), comp);
    int ans = 0;
    for (auto& p: vec) {
        if (!isValid[p.first]) {
            continue;
        }
        ans++;
        go_down(p.first, D);
    }
    cout << ans;

}

Compilation message

catinatree.cpp:15: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
   15 | #pragma GCC optimization ("O3")
      | 
catinatree.cpp:16: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
   16 | #pragma GCC optimization ("unroll-loops")
      |

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 436 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 1 ms 340 KB Output is correct

Subtask #3
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 436 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 1 ms 340 KB Output is correct
41 Correct 66 ms 14976 KB Output is correct
42 Correct 35 ms 8140 KB Output is correct
43 Correct 46 ms 8272 KB Output is correct
44 Correct 38 ms 8144 KB Output is correct
45 Correct 37 ms 8248 KB Output is correct
46 Correct 112 ms 16140 KB Output is correct
47 Correct 163 ms 16152 KB Output is correct
48 Correct 105 ms 16136 KB Output is correct
49 Correct 115 ms 16220 KB Output is correct
50 Correct 26 ms 8532 KB Output is correct
51 Correct 30 ms 8580 KB Output is correct
52 Correct 29 ms 8600 KB Output is correct
53 Correct 63 ms 16780 KB Output is correct
54 Correct 64 ms 16812 KB Output is correct
55 Correct 68 ms 16780 KB Output is correct
56 Correct 1 ms 468 KB Output is correct
57 Correct 6 ms 1996 KB Output is correct
58 Correct 31 ms 8140 KB Output is correct
59 Correct 94 ms 15948 KB Output is correct
60 Correct 69 ms 16104 KB Output is correct
61 Correct 94 ms 14832 KB Output is correct