#include <stdio.h>
#include <string.h>
#include "maze.h"
#include <assert.h>
#include <math.h>

int paths(char* maze, int journey, int size){
    //printf("journy je:%d\n",journey);

	if(journey == size*size-1){
		maze[journey]= '*';
		return 1;
	}
	
	if(journey >= 0 && journey < (size*size) && maze[journey]==' '){

        maze[journey] = '*';

		//Pohyb dole
        if(journey < (size * size) - (size)){
		    if(paths(maze, journey+size, size)){
			    return 1;
            }
        }


		//Pohyb vpravo
        if((journey+1)%size!=0) {
            if (paths(maze, journey + 1, size)) {
                return 1;
            }
        }

		//Pohyb hore
		if(paths(maze, journey-size, size)){
			return 1;
		}

		//Pohyb vlavo
		if((journey%size)!=0){
			if(paths(maze, journey-1, size))
				return 1;
		}
	
		maze[journey] = ' '; 
		return 0;
	}
	
	return 0;
}

int solve_maze(char* maze, int size){
	return paths(maze, 0, size);
}