Cod sursa(job #615045)

Utilizator suzanicaSuzanica Mihu suzanica Data 8 octombrie 2011 13:45:17
Problema Rj Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.89 kb
#include<fstream>
#include<iostream>
using namespace std;

int a[105][105],mat[105][105],L,C,xr,yr,xj,yj;

short dx[] = {-1,-1,-1, 0, 1, 1, 1, 0};

short dy[] = {-1, 0, 1, 1, 1, 0,-1,-1};

struct coord
{
	int x,y;
};

coord q[10000];

void Citire()
{
	int i,j;
	char s[110];
	ifstream fin("rj.in");
	
	fin>>L>>C;
	fin.get();
	
	for(i=1; i<=L; i++)
	{
		fin.getline(s,110);
		for(j=0; j<C; j++)
			
			if(s[j]==' ')	a[i][j+1] = 0;
			else if(s[j]=='X')	a[i][j+1] = 1;
				else if(s[j]=='R')	{	xr = i;	yr = j+1; }
					else	{	xj = i;	yj = j+1;	}		
	}
	
	fin.close();
	
	for(i=1; i<=L; i++)
		for(j=1; j<=C; j++)
			mat[i][j] = a[i][j];
}
void Bordare()
{
	int i,n,m;
	
	n = L + 1;
	m = C + 1;
	
	for(i=0; i<=n; i++)
		mat[i][0] = mat[i][m] = a[i][0] = a[i][m] = -1;
	
	for(i=0; i<=m; i++)
		mat[0][i] = mat[n][i] = a[0][i] = a[n][i] = -1;
}

void Romeo()
{
	int pr,ul,i,j,x,y,k;
	pr = ul = 0;
	
	a[xr][yr] = 2;
	q[ul].x = xr;
	q[ul].y = yr;
	
	while(pr<=ul)
	{
		i = q[pr].x;
		j = q[pr].y;
		pr++;		
		for(k=0; k<8; k++)
		{
			x = i + dx[k];
			y = j + dy[k];
			
			if(a[x][y] == 0)
			{
				ul++;
				q[ul].x = x;
				q[ul].y = y;
				a[x][y] = a[i][j] + 1;
			}
		}
	}
}
void Julieta()
{
	int pr,ul,i,j,x,y,k;
	pr = ul = 0;
	
	mat[xj][yj] = 2;
	q[ul].x = xj;
	q[ul].y = yj;
	
	while(pr<=ul)
	{
		i = q[pr].x;
		j = q[pr].y;
		pr++;
		for(k=0; k<8; k++)
		{
			x = i + dx[k];
			y = j + dy[k];
			if(mat[x][y] == 0)
			{
				ul++;
				q[ul].x = x;
				q[ul].y = y;
				mat[x][y] = mat[i][j] + 1;
			}
		}
	}
}

void Afisare()
{
	int i,j,lin=0,col=0,tmin=1000000;
	
	for(i=1; i<=L; i++)
		for(j=1; j<=C; j++)
		{
			if(a[i][j] == mat[i][j] && a[i][j] > 1)
			{
				if(a[i][j] - 1 < tmin)
				{
					tmin = a[i][j] - 1;
					lin = i;
					col = j;
				}
			}
		}
	
	ofstream fout("rj.out");
	
	fout<<tmin<<" "<<lin<<" "<<col<<"\n";
	
	fout.close();
}

int main ()
{
	Citire();
	Bordare();
	Romeo();
	Julieta();
	Afisare();
	return 0;
}