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Submission #867645

# Submission time Handle Problem Language Result Execution time Memory
867645 2023-10-29T04:05:41 Z Cookie Cat in a tree (BOI17_catinatree) C++14
100 / 100
 60 ms 29780 KB 
#include<bits/stdc++.h>
#include<fstream>
using namespace std;
ifstream fin("paint.inp");
ofstream fout("paint.out");
#define sz(a) (int)a.size()
#define ll long long
#define pb push_back
#define forr(i, a, b) for(int i = a; i < b; i++)
#define dorr(i, a, b) for(int i = a; i >= b; i--)
#define ld long double
#define vt vector
#include<fstream>
#define fi first
#define se second
#define pll pair<ll, ll>
#define pii pair<int, int>
const ld PI = 3.14159265359;
using u128 = __uint128_t;
const int x[4] = {1, -1, 0, 0};
const int y[4] = {0, 0, 1, -1};
const ll mod = 1e9 + 7, inf = 1e9;
const int mxn = 3e5 + 5;
int n, d;
pll dp[mxn + 1];
vt<int>adj[mxn + 1];
int dep[mxn + 1];
void dfs(int s, int pre){
    vt<pll>comp;
    for(auto i: adj[s]){
        if(i != pre){
            dep[i] = dep[s] + 1;
            dfs(i, s);
            comp.pb(dp[i]);
        }
    }
    // dp[i] = [max depth, max taken]
    sort(comp.rbegin(), comp.rend());
    ll mndep = inf;
    for(auto [de, tak]: comp){
        if(de + mndep - 2 * dep[s] >= d){
            dp[s].second += tak; mndep = min(mndep, de);
        }else{
            dp[s].second += tak - 1;
        }
    }
    if(mndep - dep[s] >= d){
        dp[s].second++; mndep = dep[s];
    }
    dp[s].first = mndep;
}
signed main()
{
     ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
   cin >> n >> d;
   for(int i = 1; i < n; i++){
       int x; cin >> x;
       adj[x].pb(i);
   }
   dfs(0, -1);
   cout << dp[0].second;
    return(0);
}

Compilation message

catinatree.cpp: In function 'void dfs(int, int)':
catinatree.cpp:40:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   40 |     for(auto [de, tak]: comp){
      |              ^

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8540 KB Output is correct
2 Correct 2 ms 8540 KB Output is correct
3 Correct 2 ms 8536 KB Output is correct
4 Correct 2 ms 8540 KB Output is correct
5 Correct 2 ms 8540 KB Output is correct
6 Correct 2 ms 8540 KB Output is correct
7 Correct 2 ms 8540 KB Output is correct
8 Correct 2 ms 8540 KB Output is correct
9 Correct 2 ms 8536 KB Output is correct
10 Correct 2 ms 8540 KB Output is correct
11 Correct 2 ms 8540 KB Output is correct
12 Correct 2 ms 8536 KB Output is correct
13 Correct 2 ms 8540 KB Output is correct
14 Correct 2 ms 8540 KB Output is correct
15 Correct 2 ms 8536 KB Output is correct
16 Correct 2 ms 8880 KB Output is correct
17 Correct 2 ms 8676 KB Output is correct
18 Correct 2 ms 8540 KB Output is correct
19 Correct 2 ms 8792 KB Output is correct
20 Correct 2 ms 8540 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8540 KB Output is correct
2 Correct 2 ms 8540 KB Output is correct
3 Correct 2 ms 8536 KB Output is correct
4 Correct 2 ms 8540 KB Output is correct
5 Correct 2 ms 8540 KB Output is correct
6 Correct 2 ms 8540 KB Output is correct
7 Correct 2 ms 8540 KB Output is correct
8 Correct 2 ms 8540 KB Output is correct
9 Correct 2 ms 8536 KB Output is correct
10 Correct 2 ms 8540 KB Output is correct
11 Correct 2 ms 8540 KB Output is correct
12 Correct 2 ms 8536 KB Output is correct
13 Correct 2 ms 8540 KB Output is correct
14 Correct 2 ms 8540 KB Output is correct
15 Correct 2 ms 8536 KB Output is correct
16 Correct 2 ms 8880 KB Output is correct
17 Correct 2 ms 8676 KB Output is correct
18 Correct 2 ms 8540 KB Output is correct
19 Correct 2 ms 8792 KB Output is correct
20 Correct 2 ms 8540 KB Output is correct
21 Correct 3 ms 8792 KB Output is correct
22 Correct 2 ms 8540 KB Output is correct
23 Correct 2 ms 8540 KB Output is correct
24 Correct 2 ms 8676 KB Output is correct
25 Correct 2 ms 8540 KB Output is correct
26 Correct 2 ms 8540 KB Output is correct
27 Correct 3 ms 8536 KB Output is correct
28 Correct 2 ms 8536 KB Output is correct
29 Correct 2 ms 8540 KB Output is correct
30 Correct 2 ms 8540 KB Output is correct
31 Correct 2 ms 8540 KB Output is correct
32 Correct 2 ms 8540 KB Output is correct
33 Correct 2 ms 8540 KB Output is correct
34 Correct 2 ms 8540 KB Output is correct
35 Correct 2 ms 8540 KB Output is correct
36 Correct 3 ms 8540 KB Output is correct
37 Correct 2 ms 8540 KB Output is correct
38 Correct 3 ms 8540 KB Output is correct
39 Correct 2 ms 8540 KB Output is correct
40 Correct 2 ms 8796 KB Output is correct

Subtask #3
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8540 KB Output is correct
2 Correct 2 ms 8540 KB Output is correct
3 Correct 2 ms 8536 KB Output is correct
4 Correct 2 ms 8540 KB Output is correct
5 Correct 2 ms 8540 KB Output is correct
6 Correct 2 ms 8540 KB Output is correct
7 Correct 2 ms 8540 KB Output is correct
8 Correct 2 ms 8540 KB Output is correct
9 Correct 2 ms 8536 KB Output is correct
10 Correct 2 ms 8540 KB Output is correct
11 Correct 2 ms 8540 KB Output is correct
12 Correct 2 ms 8536 KB Output is correct
13 Correct 2 ms 8540 KB Output is correct
14 Correct 2 ms 8540 KB Output is correct
15 Correct 2 ms 8536 KB Output is correct
16 Correct 2 ms 8880 KB Output is correct
17 Correct 2 ms 8676 KB Output is correct
18 Correct 2 ms 8540 KB Output is correct
19 Correct 2 ms 8792 KB Output is correct
20 Correct 2 ms 8540 KB Output is correct
21 Correct 3 ms 8792 KB Output is correct
22 Correct 2 ms 8540 KB Output is correct
23 Correct 2 ms 8540 KB Output is correct
24 Correct 2 ms 8676 KB Output is correct
25 Correct 2 ms 8540 KB Output is correct
26 Correct 2 ms 8540 KB Output is correct
27 Correct 3 ms 8536 KB Output is correct
28 Correct 2 ms 8536 KB Output is correct
29 Correct 2 ms 8540 KB Output is correct
30 Correct 2 ms 8540 KB Output is correct
31 Correct 2 ms 8540 KB Output is correct
32 Correct 2 ms 8540 KB Output is correct
33 Correct 2 ms 8540 KB Output is correct
34 Correct 2 ms 8540 KB Output is correct
35 Correct 2 ms 8540 KB Output is correct
36 Correct 3 ms 8540 KB Output is correct
37 Correct 2 ms 8540 KB Output is correct
38 Correct 3 ms 8540 KB Output is correct
39 Correct 2 ms 8540 KB Output is correct
40 Correct 2 ms 8796 KB Output is correct
41 Correct 50 ms 18644 KB Output is correct
42 Correct 32 ms 13048 KB Output is correct
43 Correct 21 ms 12888 KB Output is correct
44 Correct 19 ms 13024 KB Output is correct
45 Correct 18 ms 13044 KB Output is correct
46 Correct 60 ms 17264 KB Output is correct
47 Correct 36 ms 17240 KB Output is correct
48 Correct 38 ms 17236 KB Output is correct
49 Correct 60 ms 17232 KB Output is correct
50 Correct 14 ms 11868 KB Output is correct
51 Correct 10 ms 11868 KB Output is correct
52 Correct 11 ms 11868 KB Output is correct
53 Correct 19 ms 14684 KB Output is correct
54 Correct 18 ms 14872 KB Output is correct
55 Correct 20 ms 14860 KB Output is correct
56 Correct 2 ms 8796 KB Output is correct
57 Correct 7 ms 13932 KB Output is correct
58 Correct 23 ms 25688 KB Output is correct
59 Correct 48 ms 29780 KB Output is correct
60 Correct 41 ms 19400 KB Output is correct
61 Correct 35 ms 18000 KB Output is correct