aoc1711_hex_grid.cpp

/* ************************************************************************** */
/*                                                                            */
/*                            \\             /`/``                            */
/*                            ~\o o_       0 0\                               */
/*                            / \__)      (u  ); _  _                         */
/*                     / \/ \/  /           \  \/ \/ \                        */
/*                    /(   . . )            (         )\                      */
/*                   /  \_____/              \_______/  \                     */
/*                       []  []               [[] [[]    *.                   */
/*                       []] []]              [[] [[]                         */
/*                                                                            */
/* ****************************************************************** nuo *** */


#include "iostream"
#include "sstream"

using namespace std;

int     man(int x, int y);

int     main()
{
        string      step, s;
        char        c;
        int         max, end, x, y;

        max = x = y = 0;
        cin >> s;
        stringstream ss(s);
        while (getline(ss, step, ','))
        {
            if (step == "n")
                y += 2;
            if (step == "s")
                y -= 2;
            if (step == "ne")
            {
                x += 1;
                y += 1;
            }
            if (step == "se")
            {
                x += 1;
                y -= 1;
            }
            if (step == "sw")
            {
                x -= 1;
                y -= 1;
            }
            if (step == "nw")
            {
                x -= 1;
                y += 1;
            }
            end = man(x, y);
            max = max < end ? end : max;
        }
        cout << "Star 1 : " << end << endl;
        cout << "Star 2 : " << max << endl;
}

int     man(int x, int y)
{
        return ((abs(x) + abs(y)) / 2);
}