#include <bits/stdc++.h>
using namespace std;
#define pii array<int,2>
#define tii array<int,3>
signed main() {
ios::sync_with_stdio(false);
cin.tie(0);
int n,d;cin>>n>>d;
vector<vector<int>> g(n);
for (int i=1;i<n;i++) {
int p;cin>>p;
g[p].push_back(i);
g[i].push_back(p);
}
int ans = 0;
vector<bool> valid(n, true);
int validNodes = n;
vector<pii> depth;
function<void(int,int,int)> dfs=[&](int node, int pv, int dp) {
depth.push_back({dp, node});
for (auto &x:g[node]) {
if (x == pv)continue;
dfs(x, node, dp+1);
}
};
dfs(0, -1, 0);
sort(depth.begin(), depth.end());
vector<int> dis(n, 1e9);
while (validNodes) {
auto [dist, node] = depth.back();
depth.pop_back();
if (!valid[node])continue;
valid[node] = false;
validNodes--;
ans++;
queue<int> q;
q.push(node);
dis[node] = 0;
while (!q.empty()) {
int t=q.front();
q.pop();
for (auto &x:g[t]) {
if (dis[x] > dis[t] + 1) {
dis[x] = dis[t]+1;
if (dis[x] < d){
q.push(x);
if (valid[x]) {
valid[x] = false;
validNodes--;
}
}
}
}
}
}
cout<<ans<<"\n";
}
Compilation message
catinatree.cpp: In function 'int main()':
catinatree.cpp:37:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
37 | auto [dist, node] = depth.back();
| ^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
1 ms |
344 KB |
Output is correct |
| 4 |
Correct |
0 ms |
348 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
0 ms |
344 KB |
Output is correct |
| 7 |
Correct |
0 ms |
348 KB |
Output is correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Correct |
0 ms |
456 KB |
Output is correct |
| 10 |
Correct |
0 ms |
348 KB |
Output is correct |
| 11 |
Correct |
1 ms |
348 KB |
Output is correct |
| 12 |
Correct |
0 ms |
348 KB |
Output is correct |
| 13 |
Correct |
0 ms |
600 KB |
Output is correct |
| 14 |
Correct |
0 ms |
344 KB |
Output is correct |
| 15 |
Correct |
0 ms |
348 KB |
Output is correct |
| 16 |
Correct |
0 ms |
348 KB |
Output is correct |
| 17 |
Correct |
1 ms |
348 KB |
Output is correct |
| 18 |
Correct |
0 ms |
348 KB |
Output is correct |
| 19 |
Correct |
0 ms |
348 KB |
Output is correct |
| 20 |
Correct |
0 ms |
348 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
1 ms |
344 KB |
Output is correct |
| 4 |
Correct |
0 ms |
348 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
0 ms |
344 KB |
Output is correct |
| 7 |
Correct |
0 ms |
348 KB |
Output is correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Correct |
0 ms |
456 KB |
Output is correct |
| 10 |
Correct |
0 ms |
348 KB |
Output is correct |
| 11 |
Correct |
1 ms |
348 KB |
Output is correct |
| 12 |
Correct |
0 ms |
348 KB |
Output is correct |
| 13 |
Correct |
0 ms |
600 KB |
Output is correct |
| 14 |
Correct |
0 ms |
344 KB |
Output is correct |
| 15 |
Correct |
0 ms |
348 KB |
Output is correct |
| 16 |
Correct |
0 ms |
348 KB |
Output is correct |
| 17 |
Correct |
1 ms |
348 KB |
Output is correct |
| 18 |
Correct |
0 ms |
348 KB |
Output is correct |
| 19 |
Correct |
0 ms |
348 KB |
Output is correct |
| 20 |
Correct |
0 ms |
348 KB |
Output is correct |
| 21 |
Correct |
1 ms |
604 KB |
Output is correct |
| 22 |
Correct |
0 ms |
348 KB |
Output is correct |
| 23 |
Correct |
1 ms |
348 KB |
Output is correct |
| 24 |
Correct |
0 ms |
348 KB |
Output is correct |
| 25 |
Correct |
1 ms |
348 KB |
Output is correct |
| 26 |
Correct |
1 ms |
348 KB |
Output is correct |
| 27 |
Correct |
1 ms |
348 KB |
Output is correct |
| 28 |
Correct |
1 ms |
348 KB |
Output is correct |
| 29 |
Correct |
1 ms |
348 KB |
Output is correct |
| 30 |
Correct |
1 ms |
348 KB |
Output is correct |
| 31 |
Correct |
1 ms |
348 KB |
Output is correct |
| 32 |
Correct |
1 ms |
348 KB |
Output is correct |
| 33 |
Correct |
1 ms |
344 KB |
Output is correct |
| 34 |
Correct |
1 ms |
348 KB |
Output is correct |
| 35 |
Correct |
1 ms |
348 KB |
Output is correct |
| 36 |
Correct |
1 ms |
348 KB |
Output is correct |
| 37 |
Correct |
1 ms |
348 KB |
Output is correct |
| 38 |
Correct |
1 ms |
600 KB |
Output is correct |
| 39 |
Correct |
1 ms |
604 KB |
Output is correct |
| 40 |
Correct |
1 ms |
604 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
1 ms |
344 KB |
Output is correct |
| 4 |
Correct |
0 ms |
348 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
0 ms |
344 KB |
Output is correct |
| 7 |
Correct |
0 ms |
348 KB |
Output is correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Correct |
0 ms |
456 KB |
Output is correct |
| 10 |
Correct |
0 ms |
348 KB |
Output is correct |
| 11 |
Correct |
1 ms |
348 KB |
Output is correct |
| 12 |
Correct |
0 ms |
348 KB |
Output is correct |
| 13 |
Correct |
0 ms |
600 KB |
Output is correct |
| 14 |
Correct |
0 ms |
344 KB |
Output is correct |
| 15 |
Correct |
0 ms |
348 KB |
Output is correct |
| 16 |
Correct |
0 ms |
348 KB |
Output is correct |
| 17 |
Correct |
1 ms |
348 KB |
Output is correct |
| 18 |
Correct |
0 ms |
348 KB |
Output is correct |
| 19 |
Correct |
0 ms |
348 KB |
Output is correct |
| 20 |
Correct |
0 ms |
348 KB |
Output is correct |
| 21 |
Correct |
1 ms |
604 KB |
Output is correct |
| 22 |
Correct |
0 ms |
348 KB |
Output is correct |
| 23 |
Correct |
1 ms |
348 KB |
Output is correct |
| 24 |
Correct |
0 ms |
348 KB |
Output is correct |
| 25 |
Correct |
1 ms |
348 KB |
Output is correct |
| 26 |
Correct |
1 ms |
348 KB |
Output is correct |
| 27 |
Correct |
1 ms |
348 KB |
Output is correct |
| 28 |
Correct |
1 ms |
348 KB |
Output is correct |
| 29 |
Correct |
1 ms |
348 KB |
Output is correct |
| 30 |
Correct |
1 ms |
348 KB |
Output is correct |
| 31 |
Correct |
1 ms |
348 KB |
Output is correct |
| 32 |
Correct |
1 ms |
348 KB |
Output is correct |
| 33 |
Correct |
1 ms |
344 KB |
Output is correct |
| 34 |
Correct |
1 ms |
348 KB |
Output is correct |
| 35 |
Correct |
1 ms |
348 KB |
Output is correct |
| 36 |
Correct |
1 ms |
348 KB |
Output is correct |
| 37 |
Correct |
1 ms |
348 KB |
Output is correct |
| 38 |
Correct |
1 ms |
600 KB |
Output is correct |
| 39 |
Correct |
1 ms |
604 KB |
Output is correct |
| 40 |
Correct |
1 ms |
604 KB |
Output is correct |
| 41 |
Correct |
66 ms |
14332 KB |
Output is correct |
| 42 |
Correct |
35 ms |
7644 KB |
Output is correct |
| 43 |
Correct |
44 ms |
7624 KB |
Output is correct |
| 44 |
Correct |
33 ms |
7632 KB |
Output is correct |
| 45 |
Correct |
33 ms |
7748 KB |
Output is correct |
| 46 |
Correct |
88 ms |
15048 KB |
Output is correct |
| 47 |
Correct |
100 ms |
15016 KB |
Output is correct |
| 48 |
Correct |
80 ms |
15212 KB |
Output is correct |
| 49 |
Correct |
71 ms |
15052 KB |
Output is correct |
| 50 |
Correct |
31 ms |
7896 KB |
Output is correct |
| 51 |
Correct |
25 ms |
7904 KB |
Output is correct |
| 52 |
Correct |
24 ms |
7896 KB |
Output is correct |
| 53 |
Correct |
49 ms |
15552 KB |
Output is correct |
| 54 |
Correct |
55 ms |
15556 KB |
Output is correct |
| 55 |
Correct |
53 ms |
15552 KB |
Output is correct |
| 56 |
Correct |
1 ms |
604 KB |
Output is correct |
| 57 |
Correct |
8 ms |
3820 KB |
Output is correct |
| 58 |
Correct |
33 ms |
16156 KB |
Output is correct |
| 59 |
Correct |
90 ms |
24212 KB |
Output is correct |
| 60 |
Correct |
56 ms |
14660 KB |
Output is correct |
| 61 |
Correct |
66 ms |
14276 KB |
Output is correct |
