Задача 10 из идз

#include <vector>
#include <iostream>
#include<string>
#include <map>
using namespace std;
int main() {
    vector<vector<int>> a;
    for (int i = 0; i < 8; i++) {
        a.push_back(vector<int>());
        for (int j = 0; j < 8; j++) {
            char h;
            cin >> h;
            if (h == '0') {
                a[i].push_back(-1);

            }
            else a[i].push_back(h - 'a');
        }
    }
    int ind = 0;
    while (ind!=8*8) {
        ind= 0;
        for (int x = 0; x < 8; x++) {
            for (int y = 0; y < 8; y++) {
                if (a[x][y] != -1) {
                    ind++;
                }
                for (int z = 0; z < 8; z++) {
                    if (a[y][z] != -1 && a[x][y] != -1 && a[a[x][y]][z] != -1) {
                        if (a[x][a[y][z]] != -1) {
                            if (a[x][a[y][z]] != a[a[x][y]][z]) {
                                cout << "ошибка " + x + ' ' + y + ' ' + z;
                            }

                        }
                        else {
                            a[x][a[y][z]] = a[a[x][y]][z];
                        }
                    }
                    if (a[y][z] != -1 && a[x][y] != -1 && a[x][a[y][z]] != -1) {
                        if (a[a[x][y]][z] != -1) {
                            if (a[x][a[y][z]] != a[a[x][y]][z]) {
                                cout << "ошибка " + x + ' ' + y + ' ' + z;
                            }

                        }
                        else {
                            a[a[x][y]][z] = a[x][a[y][z]];
                        }
                    }
                }
            }
        }
    }
    vector<string> ans = vector<string>(9, "");
    ans[0] += "  ";
    for (int i = 0; i < 8; i++) {
        ans[0] += ('a' + i);
        ans[0] += " ";
    }
    for (int i = 0; i < 8; i++) {
        ans[i + 1] += ('a' + i);
        ans[i+1]+= " ";
    }
    for (int i = 0; i < 8; i++) {
        for (int j = 0; j < 8; j++) {
            ans[i + 1] += (a[i][j] + 'a');
            ans[i+1]+=" ";
        }
    }
    for (int i = 0; i < 9; i++) {
        cout << ans[i] + '\n';
    }
    cout<<'\n';
    /*map<char, int> dict = { {'a',2},{'b',7},{'c',5},{'d',1},{'e',0},{'f',3},{'g',6},{'h',4} };
    //map<char, int> dict = { {'a',2},{'b',5},{'c',7},{'d',3},{'e',1},{'f',1},{'g',6},{'h',4} };
    ans = vector<string>(9, "");
    ans[0] += "  ";
    for (int i = 0; i < 8; i++) {
        ans[0] += '0'+(dict['a' + i]);
        ans[0] += " ";
    }
    for (int i = 0; i < 8; i++) {
        ans[i + 1] += '0' + (dict['a' + i]);
        ans[i + 1] += " ";
    }
    for (int i = 0; i < 8; i++) {
        for (int j = 0; j < 8; j++) {
            ans[i + 1] += '0' + (dict[a[i][j] + 'a']);
            ans[i + 1] += " ";
        }
    }
    for (int i = 0; i < 9; i++) {
        cout << ans[i] + '\n';
    }*/

}