oj.uz

Submission #1100410

# Submission time Handle Problem Language Result Execution time Memory
1100410 2024-10-13T18:32:51 Z codexistent Rima (COCI17_rima) C++14
140 / 140
 328 ms 147272 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define FOR(i, a, b) for(ll i = a; i <= b; i++)

struct Trie{
    Trie *nx[26];   
    ll val, ct;
    Trie(){
        FOR(i, 0, 25) nx[i] = NULL;
        val = ct = 0;
    }
};

ll n, r = 0; 
Trie trie;

void dfs(Trie *ti){
    ll chi = 0, b = -1, b2 = -1;
    FOR(i, 0, 25){
        if(ti->nx[i]){
            dfs(ti->nx[i]);
            if(ti->nx[i]->ct){
                chi++;
                if(b <= ti->nx[i]->val){
                    b2 = b, b = ti->nx[i]->val;
                }else if(b2 <= ti->nx[i]->val){
                    b2 = ti->nx[i]->val;
                }
            }
        }

        if(!chi){
            ti->val = ti->ct;
        }else{
            ti->val = max(ti->val, ti->ct + b + chi - 1);
        }
        
        r = max(r, ti->val);
        if(chi > 1){
            r = max(r, ti->ct + b + b2 + chi - 2);
        }
    }
}

int main(){
    cin >> n;
    FOR(i, 1, n){
        string s; cin >> s;
        reverse(begin(s), end(s));

        Trie *ctrie = &trie;
        for(char c : s){
            if(!(ctrie->nx[c - 'a'])){
                ctrie->nx[c - 'a'] = new Trie();
            }
            ctrie = ctrie->nx[c - 'a'];
        }
        ctrie->ct++;
    }
    dfs(&trie);

    cout << r << endl;
}

Subtask #1
140.0 / 140.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 328 ms 147272 KB Output is correct
5 Correct 44 ms 3920 KB Output is correct
6 Correct 91 ms 90892 KB Output is correct
7 Correct 91 ms 90556 KB Output is correct
8 Correct 85 ms 90256 KB Output is correct
9 Correct 131 ms 96188 KB Output is correct
10 Correct 91 ms 90304 KB Output is correct