Uses  
CRT;
Const  
nmax=40;  
mmax=40;
var  a,b:array[1..nmax,1..mmax] of integer;  
i,j,n,m:integer;
begin
ClrScr;
repeat  
write('N:=');  
Readln(n);
until n in [1..nmax];
repeat  
write('M:=');  
Readln(m);
until m in [1..mmax];
writeln('Исходный массив: ');
randomize;
for i:=1 to n do
begin  
for j:=1 to m do  begin  
a[i,j]:=random(10)-3;  
write(a[i,j]:5);  
b[i,j]:=a[i,j]*a[i,j]*a[i,j];  
end;
writeln;
end;
writeln('Результирующий массив: ');
for i:=1 to n do
begin  
for j:=1 to m do  
begin  
write(b[i,j]:5);  
end;
writeln;
end;
readkey
end.