var n,m,k,xi,yi,xf,yf,x,y,i,j:longint;
    f:text;
    a:array[1..50,1..50] of longint;
begin
assign(f,'kdrum.in');reset(f);
read(f,n,m,k);
read(f,xi,yi,xf,yf);
for i:=1 to n do
    for j:=1 to m do read(f,a[i,j]);
close(f);
assign(f,'kdrum.out');
x:=abs(xi-xf)+1;
y:=abs(yi-yf)+1;
writeln(f,x+y);
close(f);
end.