Submission #244909

#	Time	Username	Problem	Language	Result	Execution time	Memory
244909		NONAME	Rima (COCI17_rima)	C++14	56 / 140	373 ms	150520 KiB

rima

#include <bits/stdc++.h>
#define dbg(x) cerr << #x << " = " << x << "\n"
#define fast_io ios_base::sync_with_stdio(0); cin.tie(0); cout.tie()
using namespace std;
using ll = long long;

const int N = 5e5 + 10;

int n, ans = 1;
string s[N];

struct trie {
    trie *nxt[26];
    int cnt, res;

    trie() {
        for (int i = 0; i < 26; ++i)
            nxt[i] = 0;
        cnt = 0;
        res = 0;
    }

    void add(string &t, int p = 0) {
        if (p == int(t.size())) {
            ++cnt;
            return;
        }

        int j = t[p] - 'a';

        if (nxt[j] == 0)
            nxt[j] = new trie();

        nxt[j] -> add(t, p + 1);
    }

    void f(int x) {
        for (int i = 0; i < 26; ++i)
            if (nxt[i] != 0)
                nxt[i] -> f(i);

        for (int i = 0; i < 26; ++i)
            if (nxt[i] != 0)
                res += (nxt[i] -> res);

        //cerr << char(x + 'a') << " " << cnt << " " << res << "\n";

        ans = max(ans, res);

        if (!cnt) res = 0;
            else res += cnt;
    }
} tr;

int main() {
    fast_io;

    cin >> n;
    for (int i = 0; i < n; ++i) {
        cin >> s[i];
        reverse(s[i].begin(), s[i].end());
        tr.add(s[i]);
    }

    tr.f(-1);

    cout << ans << "\n";
}

• Subtask 1: 56 / 140