Untitled

#include <iostream>
#include <vector>
#include <string>
#include <cstdlib>

using namespace std;

int dx[8] = {-1, -1, -1, 0, 0, 1, 1, 1};
int dy[8] = {-1, 0, 1, -1, 1, -1, 0, 1};

void BackTracking(const string& s, int x, int y, int idx, const vector<string>& words, vector<vector<bool>>& visited) {
    if (words[x][y] != s[idx]) {
        return;
    }
    visited[x][y] = true;
    if (idx == s.size() - 1) {
        cout << "true";
        exit(0);
    }
    for (int i = 0; i < 8; i++) {
        int nx = x + dx[i];
        int ny = y + dy[i];

        if (nx >= 0 && nx < words.size() && ny >= 0 && ny < words[nx].size() && !visited[nx][ny]) {
            BackTracking(s, nx, ny, idx + 1, words, visited);
        }
    }
    visited[x][y] = false;
}

int main() {
    string s;
    cin >> s;
    vector<string> words;
    string tmp = "";

    while (true) {
        cin >> tmp;

        if (tmp != ".") {
            words.push_back(tmp);
        }
        else {
            break;
        }
    }

    vector<vector<bool>> visited(words.size(), vector<bool>(words[0].size(), false));
    for (int i = 0; i < words.size(); i++) {
        for (int j = 0; j < words[i].size(); j++) {
            if (words[i][j] == s[0]) {
                BackTracking(s, i, j, 0, words, visited);
            }
        }
    }
    cout << "false";
    return 0;
}