7#include<iostream.h>
#include<conio.h>
int b[20][20],m,n;
void f(int i,int j)
{
if(b[i-1][j]!=-1 && b[i][j]+1<b[i-1][j] && i-1>-1)
{
b[i-1][j]=b[i][j]+1;
f(i-1,j);
}
if(b[i+1][j]!=-1 && b[i][j]+1<b[i+1][j] && i+1<=m)
{
b[i+1][j]=b[i][j]+1;
f(i+1,j)...