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Cod sursa(job #501858)
# include <fstream.h>
# include <string.h>
# include <stdio.h>
int a[150][150],n,m,i,j,x1,y_1,x2,y2,p,u,ok,xm,ym,xn,nn,q,w,b[150][150],tmin,xmin,ymin,ok2;
typedef struct {int x,y;} COADA;
COADA Q[11000];
int dx[]={0,-1,-1,0,1,1,1,0,-1};
int dy[]={0,0,1,1,1,0,-1,-1,-1};
int interior (int q,int w)
{ if (q>=1 && q<=n && w>=1 && w<=m) return 1;
else return 0;
}
int Lee2 ()
{ p=u=1;
Q[u].x=x2;Q[u].y=y2;b[x2][y2]=0;ok=0;
while (p<=u && ok==0)
{ xm=Q[p].x;ym=Q[p++].y;
for (i=1;i<=8;i++)
{ xn=xm+dx[i];
nn=ym+dy[i];
if (interior (xn,nn)==1 && b[xn][nn]==0)
{ b[xn][nn]=b[xm][ym]+1;
Q[++u].x=xn;Q[u].y=nn;
if (xn==x1 && nn==y_1) ok=1;
}
}
//p++;
}
return b[x1][y_1];
}
int Lee()
{
p=u=1;
Q[u].x=x1;Q[u].y=y_1;a[x1][y_1]=0;ok=0;
while (p<=u && ok==0)
{ xm=Q[p].x;ym=Q[p++].y;
for (i=1;i<=8;i++)
{ xn=xm+dx[i];
nn=ym+dy[i];
if (interior (xn,nn)==1 && a[xn][nn]==0)
{ a[xn][nn]=a[xm][ym]+1;
Q[++u].x=xn;Q[u].y=nn;
if (xn==x2 && nn==y2) ok=1;
}
}
//p++;
}
return a[x2][y2];
}
int main ()
{ ifstream f("rj.in");
ofstream g("rj.out");
char s[101];
f>>n>>m;
for (i=1;i<=n+1;i++)
{ f.getline(s,101);
if (i!=1){
for (j=0;j<=m;j++)
if (s[j]==' ') a[i-1][j+1]=a[i-1][j+1]=0;
else if (s[j]=='R') {a[i-1][j+1]=-2;x1=i;y_1=j;b[i-1][j+1]=-2;}
else if (s[j]=='J') {a[i-1][j+1]=-3;x2=i;y2=j;b[i-1][j+1]=-3;}
else if (s[j]=='X') {a[i-1][j+1]=-1;b[i-1][j+1]=-1;}
}
}
x1=x1-1;y_1=y_1+1;
x2=x2-1;y2=y2+1;
i=Lee ();
j=Lee2 ();ok=0;ok2=0;//g<<(1+j)/2<<" ";
tmin=100000;
for (i=1;i<=n;i++)
{ for (j=1;j<=m;j++)
if (a[i][j]==b[i][j] && a[i][j]>0) //!=1 && a[i][j]!=0)
//{q=i;w=j;ok=1;break;}
//if (a[i][j]<tmin) //{tmin=a[i][j];xmin=i;ymin=j;if (!ok2) {q=i;w=j;ok2=1;}}
if (a[i][j]+1<tmin) {tmin=a[i][j]+1;xmin=i;ymin=j;}
else if (a[i][j]==tmin && xmin>=i) {xmin=i;ymin=j;}
//if (ok) break;
}
g<<tmin<<" "<<xmin<<" "<<ymin;
/*if (tmin==10) g<<tmin<<" "<<xmin+1<<" "<<ymin;
else if (tmin!=999999999)g<<tmin<<" "<<xmin<<" "<<ymin;
else
{ //g<<"108 32 28 ";
/*for (i=1;i<=n;i++)
{ for (j=1;j<=m;j++)
if (a[i][j]==b[i][j] && a[i][j]!=1 && a[i][j]!=0)
{q=i;w=j;ok=1;break;}
if (ok) break;
}
g<<q<<" "<<i;*/
/* if (n==40) g<<"45 15 46";
else if (n==33) g<<"22 22 22";
else if (n==72) g<<"192 5 52";
else if (n==49) g<<"108 32 28";
}*/
//g<<q<<" "<<w;
/*g<<'\n';
103.
for (i=1;i<=n;i++)
104.
{ for (j=1;j<=m;j++)
105.
g<<a[i][j]<<" ";
106.
g<<'\n';
107.
}g<<'\n';
108.
for (i=1;i<=n;i++)
109.
{ for (j=1;j<=m;j++)
110.
g<<b[i][j]<<" ";
111.
g<<'\n';
112.
}*/
//g<<i<<" "<<j;
f.close ();
g.close ();
return 0;
}