Submission #900651

#	Time	Username	Problem	Language	Result	Execution time	Memory
900651		vanea	Vlak (COCI20_vlak)	C++14	70 / 70	15 ms	10268 KiB

Main

#include <bits/stdc++.h>
using namespace std;
using ll = long long;

const int mxN = 2e5+10;

int trie[mxN][26], dp[mxN];
int cnt = 0;
bool stop[mxN][2];
string alpha = "abcdefghijklmnopqrstuvwxyz";

void insert(string s, int flag) {
    int node = 0;
    for(auto c : s) {
        if(trie[node][c-'a'] == 0) trie[node][c-'a'] = ++cnt;
        node = trie[node][c-'a'];
    }
    stop[node][flag] = true;
}

void dfs(int node, int lvl) {
    if(lvl & 1) dp[node] = 1;
    else dp[node] = 2;
    bool leaf = true;
    for(auto c : alpha) {
        int k = trie[node][c-'a'];
        if(k) {
            dfs(k, lvl+1);
            leaf = false;
            if(lvl & 1) dp[node] = max(dp[node], dp[k]);
            else dp[node] = min(dp[node], dp[k]);
        }
    }
    if(leaf) {
        if(stop[node][0] && stop[node][1]) {
            if(lvl & 1) dp[node] = 1;
            else dp[node] = 2;
        }
        else if(stop[node][0]) dp[node] = 1;
        else dp[node] = 2;
    }
}

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n;
    cin >> n;
    for(int i = 0; i < n; i++) {
        string s;
        cin >> s;
        insert(s, 0);
    }
    int m;
    cin >> m;
    for(int i = 0; i < m; i++) {
        string s;
        cin >> s;
        insert(s, 1);
    }
    dfs(0, 0);
    cout << (dp[0] == 1 ? "Nina" : "Emilija");
    return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10