oj.uz

답안 #718231

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
718231 2023-04-03T17:26:05 Z Ahmed57 Rima (COCI17_rima) C++14
56 / 140
 315 ms 239876 KB 
#include <bits/stdc++.h>
using namespace std ;
//TRIE
struct node{
   node *nxt[26];
   int is = 0;
   node(){
      is = 0;
      for(int i = 0;i<26;i++){
        nxt[i] = NULL;
      }
   }
};
void inser(string w,node *root){
    for(auto ch:w){
        if(root->nxt[ch-'a']==NULL){
            root->nxt[ch-'a'] = new node();
        }
        root=root->nxt[ch-'a'];
    }
    root->is++;
}
int Nnode = 0;
vector<int> adj[3000001];
int mark[3000001];
void build(node *root){
    int cur = Nnode;
    for(int j = 0;j<26;j++){
        if(root->nxt[j]!=NULL){
            Nnode++;
            adj[cur].push_back(Nnode);
            mark[Nnode] = root->nxt[j]->is;
            build(root->nxt[j]);
        }
    }
}
long long dp[3000001];
long long calc(int node){
    if(dp[node]!=-1)return dp[node];
    long long ma = 0 , sum = 0;
    for(auto j:adj[node]){
        sum+=mark[j];
    }
    for(auto j:adj[node]){
        if(mark[j]>0){
            ma = max(ma,calc(j));
        }
    }
    return dp[node]=ma+sum;
}
int main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    int n;
    cin>>n;
    node *root = new node();
    while(n--){
        string s;cin>>s;
        reverse(s.begin(),s.end());
        inser(s,root);
    }
    build(root);
    memset(dp,-1,sizeof dp);
    long long all =0;
    for(int i = 0;i<=Nnode;i++){
        if(mark[i]){
            all = max(all,calc(i)+mark[i]);
        }
    }
    cout<<all<<endl;
    return 0 ;
}

Subtask #1
56.0 / 140.0

# 결과 실행 시간 메모리 Grader output
1 Correct 42 ms 94292 KB Output is correct
2 Correct 42 ms 94316 KB Output is correct
3 Correct 43 ms 94308 KB Output is correct
4 Incorrect 315 ms 239876 KB Output isn't correct
5 Correct 56 ms 94920 KB Output is correct
6 Incorrect 113 ms 180684 KB Output isn't correct
7 Incorrect 125 ms 180408 KB Output isn't correct
8 Incorrect 111 ms 180252 KB Output isn't correct
9 Incorrect 136 ms 183668 KB Output isn't correct
10 Incorrect 111 ms 180260 KB Output isn't correct