제출 #1173449

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1173449		InvMOD	Vlak (COCI20_vlak)	C++20	70 / 70	19 ms	20292 KiB

Main

#include<bits/stdc++.h>

using namespace std;

const int C = 26;

struct Trie{
    struct Node{
        Node* child[C];
        bool Nina, Emil;
        Node(): Nina(false), Emil(false){
            for(int i = 0; i < C; i++){
                child[i] = nullptr;
            }
        }
    };

    typedef Node* pNode;

    pNode root;
    Trie(){
        root = new Node();
    }

    void addStr(const string& s, bool who){
        pNode cur = root;
        for(char c : s){
            int v = c - 'a';
            if(cur->child[v] == nullptr){
                cur->child[v] = new Node();
            }
            cur = cur->child[v];
        }

        if(!who){
            cur->Nina = true;
        }
        else cur->Emil = true;
        return;
    }

    int tinDFS = 0;
    void check(pNode x, int who){
        int curDFS;

        bool Nina = false, Emil = false;
        for(int i = 0; i < C; i++){
            if(x->child[i] != nullptr){
                pNode v = x->child[i];
                check(v, 3 - who);

                Nina = Nina | v->Nina;
                Emil = Emil | v->Emil;
            }
        }

        // choose who will win
        if(who == 1){
            if(Nina) x->Nina = true, x->Emil = false;
            else if(Emil) x->Emil = true, x->Nina = false;
        }
        else{
            if(Emil) x->Emil = true, x->Nina = false;
            else if(Nina) x->Nina = true, x->Emil = false;
        }
    }

    string Winner(){
        check(root, 1);
        if(root->Nina == 1) return "Nina";
        return "Emilija";
    }
};

void solve()
{
    int n; cin >> n;

    Trie trie;
    for(int i = 1; i <= n; i++){
        string s; cin >> s;
        trie.addStr(s, 0);
    }

    int m; cin >> m;
    for(int i = 1; i <= m; i++){
        string s; cin >> s;
        trie.addStr(s, 1);
    }

    cout << trie.Winner() << "\n";
}

int32_t main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);

    #define name "InvMOD"
    if(fopen(name".INP", "r")){
        freopen(name".INP", "r", stdin);
        freopen(name".OUT", "w", stdout);
    }

    solve();
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int32_t main()':
Main.cpp:100:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  100 |         freopen(name".INP", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:101:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  101 |         freopen(name".OUT", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• 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