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Submission #252894

# Submission time Handle Problem Language Result Execution time Memory
252894 2020-07-26T12:16:01 Z test2 Cats or Dogs (JOI18_catdog) C++14
8 / 100
 3000 ms 3072 KB 
#include <bits/stdc++.h>
#include "catdog.h"

using namespace std;

const int N = 1e5 + 7;
int n;

vector<int> adj[N] ; 
int hut[N] ; 
int x;
int dp[N] ; 

void initialize(int N, std::vector<int> A, std::vector<int> B)
{
        x = A.size();
        for(int i = 0 ; i < N - 1;i ++){
                adj[A[i]].push_back(B[i]) ;
                adj[B[i]].push_back(A[i]) ; 
        }

        return ; 
}

int dfs(int x ,int p , int c){
        int ret = 0 ;         
        if(hut[x] && hut[x] != c){
                return 1e9 ; 
        }

        for(auto u:adj[x] ){
                if( u == p) 
                        continue ; 
                ret += min(dfs(u , x , c) , dfs(u , x, 3 - c) + 1) ; 
        }
        return ret ; 
}

int answer(){
        int ret = 1e9 ; 
        memset(dp , -1 , sizeof dp) ;
        ret = min(ret , dfs(1, 1, 1)) ; 
        memset(dp , -1 , sizeof dp) ; 
        ret = min(ret , dfs(1 , 1, 2)) ;
        return ret;
}

int cat(int v)
{
        hut[v] = 1 ;
        return answer() ;
}

int dog(int v)
{
        hut[v] = 2 ; 
        return answer() ;
}

int neighbor(int v)
{
        hut[v] = 0 ; 
        return answer();
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 3072 KB Output is correct
2 Correct 4 ms 3072 KB Output is correct
3 Correct 5 ms 3072 KB Output is correct
4 Correct 4 ms 3072 KB Output is correct
5 Correct 6 ms 3072 KB Output is correct
6 Correct 7 ms 3072 KB Output is correct
7 Correct 4 ms 3072 KB Output is correct
8 Correct 4 ms 3072 KB Output is correct
9 Correct 5 ms 3072 KB Output is correct
10 Correct 4 ms 3072 KB Output is correct
11 Correct 6 ms 3072 KB Output is correct
12 Correct 3 ms 3072 KB Output is correct
13 Correct 3 ms 3072 KB Output is correct
14 Correct 4 ms 3072 KB Output is correct
15 Correct 4 ms 3072 KB Output is correct
16 Correct 4 ms 3072 KB Output is correct

Subtask #2
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 3072 KB Output is correct
2 Correct 4 ms 3072 KB Output is correct
3 Correct 5 ms 3072 KB Output is correct
4 Correct 4 ms 3072 KB Output is correct
5 Correct 6 ms 3072 KB Output is correct
6 Correct 7 ms 3072 KB Output is correct
7 Correct 4 ms 3072 KB Output is correct
8 Correct 4 ms 3072 KB Output is correct
9 Correct 5 ms 3072 KB Output is correct
10 Correct 4 ms 3072 KB Output is correct
11 Correct 6 ms 3072 KB Output is correct
12 Correct 3 ms 3072 KB Output is correct
13 Correct 3 ms 3072 KB Output is correct
14 Correct 4 ms 3072 KB Output is correct
15 Correct 4 ms 3072 KB Output is correct
16 Correct 4 ms 3072 KB Output is correct
17 Execution timed out 3055 ms 3072 KB Time limit exceeded
18 Halted 0 ms 0 KB -

Subtask #3
0 / 62.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 3072 KB Output is correct
2 Correct 4 ms 3072 KB Output is correct
3 Correct 5 ms 3072 KB Output is correct
4 Correct 4 ms 3072 KB Output is correct
5 Correct 6 ms 3072 KB Output is correct
6 Correct 7 ms 3072 KB Output is correct
7 Correct 4 ms 3072 KB Output is correct
8 Correct 4 ms 3072 KB Output is correct
9 Correct 5 ms 3072 KB Output is correct
10 Correct 4 ms 3072 KB Output is correct
11 Correct 6 ms 3072 KB Output is correct
12 Correct 3 ms 3072 KB Output is correct
13 Correct 3 ms 3072 KB Output is correct
14 Correct 4 ms 3072 KB Output is correct
15 Correct 4 ms 3072 KB Output is correct
16 Correct 4 ms 3072 KB Output is correct
17 Execution timed out 3055 ms 3072 KB Time limit exceeded
18 Halted 0 ms 0 KB -