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Cod sursa(job #767146)
#include<fstream>
#include<cstring>
using namespace std;
struct ceva {short x;short y;} c[10006];
short a[102][102],b[102][102],i,j,k,n,m,l1,c1,l2,c2,x,y;
char g[101];
int main()
{
ifstream fcin("rj.in");
ofstream fcout("rj.out");
fcin>>n>>m;
short min=30000;
for(i=0;i<=m+1;i++)
a[i][0]=a[i][n+1]=b[i][0]=b[i][n+1]=31000;
for(i=0;i<=n+1;i++)
a[0][i]=a[m+1][i]=b[0][i]=b[m+1][i]=31000;
for(i=1;i<=n;i++)
for(j=1;j<=m;j++)
a[i][j]=b[i][j]=30555;
for(i=1;i<=n;i++)
{
fcin.get();
fcin.get(g,m+1,'\n');
for(j=0;j<m;j++)
if(g[j]=='X')
a[i][j+1]=b[i][j+1]=31000;
else
if(g[j]=='R')
l1=i,c1=j+1,a[l1][c1]=0;
else
if(g[j]=='J')
l2=i,c2=j+1,b[l2][c2]=0;
}
c[++k].x=l1;
c[k].y=c1;
for(i=1;i<=k;i++)
{
if(a[c[i].x-1][c[i].y-1]==30555)
{
a[c[i].x-1][c[i].y-1]=a[c[i].x][c[i].y]+1;
c[++k].x=c[i].x-1;
c[k].y=c[i].y-1;
}
if(a[c[i].x-1][c[i].y]==30555)
{
a[c[i].x-1][c[i].y]=a[c[i].x][c[i].y]+1;
c[++k].x=c[i].x-1;
c[k].y=c[i].y;
}
if(a[c[i].x-1][c[i].y+1]==30555)
{
a[c[i].x-1][c[i].y+1]=a[c[i].x][c[i].y]+1;
c[++k].x=c[i].x-1;
c[k].y=c[i].y+1;
}
if(a[c[i].x][c[i].y-1]==30555)
{
a[c[i].x][c[i].y-1]=a[c[i].x][c[i].y]+1;
c[++k].x=c[i].x;
c[k].y=c[i].y-1;
}
if(a[c[i].x][c[i].y+1]==30555)
{
a[c[i].x][c[i].y+1]=a[c[i].x][c[i].y]+1;
c[++k].x=c[i].x;
c[k].y=c[i].y+1;
}
if(a[c[i].x+1][c[i].y-1]==30555)
{
a[c[i].x+1][c[i].y-1]=a[c[i].x][c[i].y]+1;
c[++k].x=c[i].x+1;
c[k].y=c[i].y-1;
}
if(a[c[i].x+1][c[i].y]==30555)
{
a[c[i].x+1][c[i].y]=a[c[i].x][c[i].y]+1;
c[++k].x=c[i].x+1;
c[k].y=c[i].y;
}
if(a[c[i].x+1][c[i].y+1]==30555)
{
a[c[i].x+1][c[i].y+1]=a[c[i].x][c[i].y]+1;
c[++k].x=c[i].x+1;
c[k].y=c[i].y+1;
}
}
k=0;
c[++k].x=l2;
c[k].y=c2;
for(i=1;i<=k;i++)
{
if(b[c[i].x-1][c[i].y-1]==30555)
{
b[c[i].x-1][c[i].y-1]=b[c[i].x][c[i].y]+1;
c[++k].x=c[i].x-1;
c[k].y=c[i].y-1;
}
if(b[c[i].x-1][c[i].y]==30555)
{
b[c[i].x-1][c[i].y]=b[c[i].x][c[i].y]+1;
c[++k].x=c[i].x-1;
c[k].y=c[i].y;
}
if(b[c[i].x-1][c[i].y+1]==30555)
{
b[c[i].x-1][c[i].y+1]=b[c[i].x][c[i].y]+1;
c[++k].x=c[i].x-1;
c[k].y=c[i].y+1;
}
if(b[c[i].x][c[i].y-1]==30555)
{
b[c[i].x][c[i].y-1]=b[c[i].x][c[i].y]+1;
c[++k].x=c[i].x;
c[k].y=c[i].y-1;
}
if(b[c[i].x][c[i].y+1]==30555)
{
b[c[i].x][c[i].y+1]=b[c[i].x][c[i].y]+1;
c[++k].x=c[i].x;
c[k].y=c[i].y+1;
}
if(b[c[i].x+1][c[i].y-1]==30555)
{
b[c[i].x+1][c[i].y-1]=b[c[i].x][c[i].y]+1;
c[++k].x=c[i].x+1;
c[k].y=c[i].y-1;
}
if(b[c[i].x+1][c[i].y]==30555)
{
b[c[i].x+1][c[i].y]=b[c[i].x][c[i].y]+1;
c[++k].x=c[i].x+1;
c[k].y=c[i].y;
}
if(b[c[i].x+1][c[i].y+1]==30555)
{
b[c[i].x+1][c[i].y+1]=b[c[i].x][c[i].y]+1;
c[++k].x=c[i].x+1;
c[k].y=c[i].y+1;
}
}
for(i=1;i<=n;i++)
for(j=1;j<=m;j++)
if(a[i][j]==b[i][j])
if(a[i][j]<min)
min=a[i][j],x=i,y=j;
fcout<<min+1<<" "<<x<<" "<<y;
return 0;
}