Farbe

#include <iostream>
int main()
{
    const int VERT_NUM = 7; // Wprowadź ilość wierzchołków
    const int COLOR_NUM = 3; // Wprowadź ilość kolorów
    const int EDG_NUM = 9; // Wprowadź ilość krawędzi
    int vertices[VERT_NUM] = {0};
    int edges[EDG_NUM][2];
    // Wprowadź wierzchołki kolejnych krawędzi (numeracja zaczyna się od 1)
    edges[0][0] = 1, edges[0][1] = 2; // 1. krawędź
    edges[1][0] = 1, edges[1][1] = 3; // 2. krawędź
    edges[2][0] = 1, edges[2][1] = 6; // ...
    edges[3][0] = 2, edges[3][1] = 5;
    edges[4][0] = 3, edges[4][1] = 6;
    edges[5][0] = 3, edges[5][1] = 4;
    edges[6][0] = 4, edges[6][1] = 5;
    edges[7][0] = 5, edges[7][1] = 6;
    edges[8][0] = 5, edges[8][1] = 7;
    bool right = true;
    int counter = 0;
    while (true)
    {
        for (int i = 0; i < EDG_NUM; i++)
        {
            if (vertices[edges[i][0] - 1] == vertices[edges[i][1] - 1])
            {
                right = false;
                break;
            }
        }
        if (right)
        {
            counter++;
            std::cout << "GRAF " << counter << std::endl;
            for (int i = 0; i < VERT_NUM; i++)
                std::cout << vertices[i] << ' ';
            std::cout << std::endl;
        }
        vertices[0]++;
        for (int i = 0; i < VERT_NUM - 1; i++)
        {
            if (vertices[i] == COLOR_NUM)
            {
                vertices[i] = 0;
                vertices[i + 1]++;
            }
        }
        if (vertices[VERT_NUM - 1] == COLOR_NUM)
            break;
        right = true;
    }
    std::cin.get();
    return 0;
}