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Submission #172694

# Submission time Handle Problem Language Result Execution time Memory
172694 2020-01-02T11:50:14 Z rzbt Cat in a tree (BOI17_catinatree) C++14
100 / 100
 116 ms 15712 KB 
#include <bits/stdc++.h>
#define mp make_pair
#define pb push_back
#define F first
#define S second
#define all(x) x.begin(),x.end()
#define MAXN 200005
typedef long long ll;


using namespace std;

int dp[MAXN],udalj[MAXN];
int n,k;
vector<int> graf[MAXN];

void dfs(int t){
    if(graf[t].empty()){
        dp[t]=1;
        udalj[t]=0;
        return;
    }
    dfs(graf[t][0]);
    udalj[t]=udalj[graf[t][0]]+1;
    dp[t]=dp[graf[t][0]];
    if(udalj[t]==k){
        udalj[t]=0;
        dp[t]++;
    }
    bool prvi=true;
    for(auto x:graf[t]){
        if(prvi){
            prvi=false;
            continue;
        }
        dfs(x);
        if(udalj[t]+udalj[x]+1>=k){
            dp[t]+=dp[x];
            udalj[t]=min(udalj[t],udalj[x]+1);
        }else{
            dp[t]+=dp[x]-1;
            udalj[t]=max(udalj[t],udalj[x]+1);
        }
    }
    //printf("%d  %d %d",t,udalj[t],dp[t]);

}



int main()
{
    scanf("%d %d", &n, &k);
    for(int i=1;i<n;i++){
        int t;
        scanf("%d", &t);
        graf[t].pb(i);
    }
    dfs(0);
    printf("%d",dp[0]);
    return 0;
}

Compilation message

catinatree.cpp: In function 'int main()':
catinatree.cpp:53:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &n, &k);
     ~~~~~^~~~~~~~~~~~~~~~~
catinatree.cpp:56:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &t);
         ~~~~~^~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 5236 KB Output is correct
2 Correct 6 ms 4984 KB Output is correct
3 Correct 6 ms 4984 KB Output is correct
4 Correct 6 ms 4984 KB Output is correct
5 Correct 6 ms 4984 KB Output is correct
6 Correct 6 ms 4984 KB Output is correct
7 Correct 6 ms 4984 KB Output is correct
8 Correct 6 ms 4984 KB Output is correct
9 Correct 6 ms 4988 KB Output is correct
10 Correct 6 ms 4984 KB Output is correct
11 Correct 6 ms 4984 KB Output is correct
12 Correct 6 ms 4984 KB Output is correct
13 Correct 6 ms 4984 KB Output is correct
14 Correct 6 ms 4984 KB Output is correct
15 Correct 6 ms 4984 KB Output is correct
16 Correct 6 ms 4984 KB Output is correct
17 Correct 7 ms 4988 KB Output is correct
18 Correct 6 ms 4980 KB Output is correct
19 Correct 6 ms 4984 KB Output is correct
20 Correct 6 ms 4984 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 5236 KB Output is correct
2 Correct 6 ms 4984 KB Output is correct
3 Correct 6 ms 4984 KB Output is correct
4 Correct 6 ms 4984 KB Output is correct
5 Correct 6 ms 4984 KB Output is correct
6 Correct 6 ms 4984 KB Output is correct
7 Correct 6 ms 4984 KB Output is correct
8 Correct 6 ms 4984 KB Output is correct
9 Correct 6 ms 4988 KB Output is correct
10 Correct 6 ms 4984 KB Output is correct
11 Correct 6 ms 4984 KB Output is correct
12 Correct 6 ms 4984 KB Output is correct
13 Correct 6 ms 4984 KB Output is correct
14 Correct 6 ms 4984 KB Output is correct
15 Correct 6 ms 4984 KB Output is correct
16 Correct 6 ms 4984 KB Output is correct
17 Correct 7 ms 4988 KB Output is correct
18 Correct 6 ms 4980 KB Output is correct
19 Correct 6 ms 4984 KB Output is correct
20 Correct 6 ms 4984 KB Output is correct
21 Correct 7 ms 5112 KB Output is correct
22 Correct 6 ms 5112 KB Output is correct
23 Correct 6 ms 4984 KB Output is correct
24 Correct 8 ms 5112 KB Output is correct
25 Correct 6 ms 4984 KB Output is correct
26 Correct 7 ms 5112 KB Output is correct
27 Correct 6 ms 4984 KB Output is correct
28 Correct 6 ms 4984 KB Output is correct
29 Correct 6 ms 5112 KB Output is correct
30 Correct 7 ms 5012 KB Output is correct
31 Correct 6 ms 5112 KB Output is correct
32 Correct 6 ms 4984 KB Output is correct
33 Correct 6 ms 5116 KB Output is correct
34 Correct 7 ms 5112 KB Output is correct
35 Correct 7 ms 4988 KB Output is correct
36 Correct 7 ms 4984 KB Output is correct
37 Correct 6 ms 5112 KB Output is correct
38 Correct 6 ms 5112 KB Output is correct
39 Correct 7 ms 5112 KB Output is correct
40 Correct 7 ms 5240 KB Output is correct

Subtask #3
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 5236 KB Output is correct
2 Correct 6 ms 4984 KB Output is correct
3 Correct 6 ms 4984 KB Output is correct
4 Correct 6 ms 4984 KB Output is correct
5 Correct 6 ms 4984 KB Output is correct
6 Correct 6 ms 4984 KB Output is correct
7 Correct 6 ms 4984 KB Output is correct
8 Correct 6 ms 4984 KB Output is correct
9 Correct 6 ms 4988 KB Output is correct
10 Correct 6 ms 4984 KB Output is correct
11 Correct 6 ms 4984 KB Output is correct
12 Correct 6 ms 4984 KB Output is correct
13 Correct 6 ms 4984 KB Output is correct
14 Correct 6 ms 4984 KB Output is correct
15 Correct 6 ms 4984 KB Output is correct
16 Correct 6 ms 4984 KB Output is correct
17 Correct 7 ms 4988 KB Output is correct
18 Correct 6 ms 4980 KB Output is correct
19 Correct 6 ms 4984 KB Output is correct
20 Correct 6 ms 4984 KB Output is correct
21 Correct 7 ms 5112 KB Output is correct
22 Correct 6 ms 5112 KB Output is correct
23 Correct 6 ms 4984 KB Output is correct
24 Correct 8 ms 5112 KB Output is correct
25 Correct 6 ms 4984 KB Output is correct
26 Correct 7 ms 5112 KB Output is correct
27 Correct 6 ms 4984 KB Output is correct
28 Correct 6 ms 4984 KB Output is correct
29 Correct 6 ms 5112 KB Output is correct
30 Correct 7 ms 5012 KB Output is correct
31 Correct 6 ms 5112 KB Output is correct
32 Correct 6 ms 4984 KB Output is correct
33 Correct 6 ms 5116 KB Output is correct
34 Correct 7 ms 5112 KB Output is correct
35 Correct 7 ms 4988 KB Output is correct
36 Correct 7 ms 4984 KB Output is correct
37 Correct 6 ms 5112 KB Output is correct
38 Correct 6 ms 5112 KB Output is correct
39 Correct 7 ms 5112 KB Output is correct
40 Correct 7 ms 5240 KB Output is correct
41 Correct 58 ms 11236 KB Output is correct
42 Correct 43 ms 7928 KB Output is correct
43 Correct 42 ms 7924 KB Output is correct
44 Correct 41 ms 8056 KB Output is correct
45 Correct 42 ms 8056 KB Output is correct
46 Correct 100 ms 10924 KB Output is correct
47 Correct 100 ms 11032 KB Output is correct
48 Correct 101 ms 11044 KB Output is correct
49 Correct 116 ms 11044 KB Output is correct
50 Correct 26 ms 6776 KB Output is correct
51 Correct 24 ms 6788 KB Output is correct
52 Correct 24 ms 6776 KB Output is correct
53 Correct 46 ms 8440 KB Output is correct
54 Correct 41 ms 8540 KB Output is correct
55 Correct 41 ms 8456 KB Output is correct
56 Correct 7 ms 5112 KB Output is correct
57 Correct 12 ms 6776 KB Output is correct
58 Correct 37 ms 13560 KB Output is correct
59 Correct 89 ms 15712 KB Output is correct
60 Correct 58 ms 11892 KB Output is correct
61 Correct 78 ms 11540 KB Output is correct