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Submission #391326

# Submission time Handle Problem Language Result Execution time Memory
391326 2021-04-18T14:45:06 Z Ruxandra985 Cat in a tree (BOI17_catinatree) C++14
100 / 100
 220 ms 16316 KB 
#include <bits/stdc++.h>
#define DIMN 200010
using namespace std;
vector <int> v[DIMN];
vector <pair <int , int> > w;
int taken[DIMN] , lvl[DIMN];
void dfs (int nod , int tt , int still){
    int i , vecin;
 
    if (taken[nod] >= still)
        return;
 
    taken[nod] = still;
 
    for (i = 0 ; i < v[nod].size() ; i++){
        vecin = v[nod][i];
        if (vecin != tt && taken[vecin] < still - 1)
            dfs(vecin , nod , still - 1);
    }
 
 
}
 
int main()
{
    FILE *fin = stdin;
    FILE *fout = stdout;
    int n , d , i , x , sol , nod;
    fscanf (fin,"%d%d",&n,&d);
    for (i = 2 ; i <= n ; i++){
        fscanf (fin,"%d",&x);
        x++;
        v[x].push_back(i);
        v[i].push_back(x);
 
        lvl[i] = 1 + lvl[x];
    }
 
    for (i = 1 ; i <= n ; i++)
        w.push_back(make_pair(lvl[i] , i));
 
    sort (w.begin() , w.end());
 
    sol = 0;
    while (!w.empty()){
 
        nod = w.back().second;
        w.pop_back();
 
        if (taken[nod])
            continue;
        sol++;
        dfs(nod , 0 , d);
 
    }
 
    fprintf (fout,"%d",sol);
 
    return 0;
}

Compilation message

catinatree.cpp: In function 'void dfs(int, int, int)':
catinatree.cpp:15:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |     for (i = 0 ; i < v[nod].size() ; i++){
      |                  ~~^~~~~~~~~~~~~~~
catinatree.cpp: In function 'int main()':
catinatree.cpp:29:12: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   29 |     fscanf (fin,"%d%d",&n,&d);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~
catinatree.cpp:31:16: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   31 |         fscanf (fin,"%d",&x);
      |         ~~~~~~~^~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4940 KB Output is correct
2 Correct 4 ms 4940 KB Output is correct
3 Correct 4 ms 4940 KB Output is correct
4 Correct 3 ms 5008 KB Output is correct
5 Correct 4 ms 4940 KB Output is correct
6 Correct 3 ms 4940 KB Output is correct
7 Correct 3 ms 4940 KB Output is correct
8 Correct 3 ms 4940 KB Output is correct
9 Correct 3 ms 4940 KB Output is correct
10 Correct 4 ms 4944 KB Output is correct
11 Correct 3 ms 4944 KB Output is correct
12 Correct 3 ms 4940 KB Output is correct
13 Correct 3 ms 4940 KB Output is correct
14 Correct 3 ms 4940 KB Output is correct
15 Correct 3 ms 4940 KB Output is correct
16 Correct 3 ms 4940 KB Output is correct
17 Correct 3 ms 4940 KB Output is correct
18 Correct 3 ms 4940 KB Output is correct
19 Correct 3 ms 4940 KB Output is correct
20 Correct 3 ms 4940 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4940 KB Output is correct
2 Correct 4 ms 4940 KB Output is correct
3 Correct 4 ms 4940 KB Output is correct
4 Correct 3 ms 5008 KB Output is correct
5 Correct 4 ms 4940 KB Output is correct
6 Correct 3 ms 4940 KB Output is correct
7 Correct 3 ms 4940 KB Output is correct
8 Correct 3 ms 4940 KB Output is correct
9 Correct 3 ms 4940 KB Output is correct
10 Correct 4 ms 4944 KB Output is correct
11 Correct 3 ms 4944 KB Output is correct
12 Correct 3 ms 4940 KB Output is correct
13 Correct 3 ms 4940 KB Output is correct
14 Correct 3 ms 4940 KB Output is correct
15 Correct 3 ms 4940 KB Output is correct
16 Correct 3 ms 4940 KB Output is correct
17 Correct 3 ms 4940 KB Output is correct
18 Correct 3 ms 4940 KB Output is correct
19 Correct 3 ms 4940 KB Output is correct
20 Correct 3 ms 4940 KB Output is correct
21 Correct 4 ms 5068 KB Output is correct
22 Correct 4 ms 4940 KB Output is correct
23 Correct 4 ms 4940 KB Output is correct
24 Correct 4 ms 4940 KB Output is correct
25 Correct 4 ms 4940 KB Output is correct
26 Correct 4 ms 4940 KB Output is correct
27 Correct 4 ms 4940 KB Output is correct
28 Correct 4 ms 5068 KB Output is correct
29 Correct 4 ms 5068 KB Output is correct
30 Correct 4 ms 5068 KB Output is correct
31 Correct 4 ms 5024 KB Output is correct
32 Correct 4 ms 5068 KB Output is correct
33 Correct 4 ms 5068 KB Output is correct
34 Correct 4 ms 5068 KB Output is correct
35 Correct 4 ms 5068 KB Output is correct
36 Correct 4 ms 5068 KB Output is correct
37 Correct 4 ms 5068 KB Output is correct
38 Correct 4 ms 5068 KB Output is correct
39 Correct 4 ms 5068 KB Output is correct
40 Correct 4 ms 5068 KB Output is correct

Subtask #3
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4940 KB Output is correct
2 Correct 4 ms 4940 KB Output is correct
3 Correct 4 ms 4940 KB Output is correct
4 Correct 3 ms 5008 KB Output is correct
5 Correct 4 ms 4940 KB Output is correct
6 Correct 3 ms 4940 KB Output is correct
7 Correct 3 ms 4940 KB Output is correct
8 Correct 3 ms 4940 KB Output is correct
9 Correct 3 ms 4940 KB Output is correct
10 Correct 4 ms 4944 KB Output is correct
11 Correct 3 ms 4944 KB Output is correct
12 Correct 3 ms 4940 KB Output is correct
13 Correct 3 ms 4940 KB Output is correct
14 Correct 3 ms 4940 KB Output is correct
15 Correct 3 ms 4940 KB Output is correct
16 Correct 3 ms 4940 KB Output is correct
17 Correct 3 ms 4940 KB Output is correct
18 Correct 3 ms 4940 KB Output is correct
19 Correct 3 ms 4940 KB Output is correct
20 Correct 3 ms 4940 KB Output is correct
21 Correct 4 ms 5068 KB Output is correct
22 Correct 4 ms 4940 KB Output is correct
23 Correct 4 ms 4940 KB Output is correct
24 Correct 4 ms 4940 KB Output is correct
25 Correct 4 ms 4940 KB Output is correct
26 Correct 4 ms 4940 KB Output is correct
27 Correct 4 ms 4940 KB Output is correct
28 Correct 4 ms 5068 KB Output is correct
29 Correct 4 ms 5068 KB Output is correct
30 Correct 4 ms 5068 KB Output is correct
31 Correct 4 ms 5024 KB Output is correct
32 Correct 4 ms 5068 KB Output is correct
33 Correct 4 ms 5068 KB Output is correct
34 Correct 4 ms 5068 KB Output is correct
35 Correct 4 ms 5068 KB Output is correct
36 Correct 4 ms 5068 KB Output is correct
37 Correct 4 ms 5068 KB Output is correct
38 Correct 4 ms 5068 KB Output is correct
39 Correct 4 ms 5068 KB Output is correct
40 Correct 4 ms 5068 KB Output is correct
41 Correct 84 ms 15184 KB Output is correct
42 Correct 51 ms 10372 KB Output is correct
43 Correct 63 ms 10428 KB Output is correct
44 Correct 54 ms 10428 KB Output is correct
45 Correct 53 ms 10428 KB Output is correct
46 Correct 130 ms 15808 KB Output is correct
47 Correct 220 ms 15876 KB Output is correct
48 Correct 134 ms 15812 KB Output is correct
49 Correct 132 ms 15784 KB Output is correct
50 Correct 42 ms 10644 KB Output is correct
51 Correct 47 ms 10744 KB Output is correct
52 Correct 48 ms 10684 KB Output is correct
53 Correct 89 ms 16240 KB Output is correct
54 Correct 100 ms 16316 KB Output is correct
55 Correct 111 ms 16308 KB Output is correct
56 Correct 4 ms 5068 KB Output is correct
57 Correct 11 ms 6320 KB Output is correct
58 Correct 39 ms 10920 KB Output is correct
59 Correct 108 ms 16304 KB Output is correct
60 Correct 86 ms 15360 KB Output is correct
61 Correct 124 ms 15152 KB Output is correct