oj.uz

Submission #136207

# Submission time Handle Problem Language Result Execution time Memory
136207 2019-07-25T01:25:07 Z thebes Cat in a tree (BOI17_catinatree) C++14
0 / 100
 6 ms 4984 KB 
#include <bits/stdc++.h>
using namespace std;

const int MN = 2e5+5;
int N, D, i, x, d[MN], ans;
vector<int> adj[MN];

void solve(int n){
    vector<int> vec;
    for(auto v : adj[n]){
        solve(v);
        vec.push_back(max(d[v]-1,0));
    }
    sort(vec.begin(),vec.end(),[](int i,int j){return i>j;});
    while(vec.size()>=2){
        if(vec[0]+vec[1]<=D) break;
        else{
            ans--;
            vec.erase(vec.begin());
        }
    }
    if(vec.empty()||vec[0]==0){
        ans ++;
        d[n] = D;
    }
}

int main(){
    for(scanf("%d%d",&N,&D),i=2;i<=N;i++){
        scanf("%d",&x);
        adj[x+1].push_back(i);
    }
    solve(1);
    printf("%d\n",ans);
    return 0;
}

Compilation message

catinatree.cpp: In function 'int main()':
catinatree.cpp:29:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(scanf("%d%d",&N,&D),i=2;i<=N;i++){
         ~~~~~~~~~~~~~~~~~~~^~~~
catinatree.cpp:30:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&x);
         ~~~~~^~~~~~~~~

Subtask #1
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 4984 KB Output is correct
2 Incorrect 6 ms 4984 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 4984 KB Output is correct
2 Incorrect 6 ms 4984 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 4984 KB Output is correct
2 Incorrect 6 ms 4984 KB Output isn't correct
3 Halted 0 ms 0 KB -