const
m=10;
var
t,i,s:integer;
x:array[1..m] of integer;
begin
for i:=1 to m do
begin
x[i]:=random(20);
write(' ',x[i]);
end;
writeln();
t:=-1;
for i:=1 to m do
begin
t:=t*(-1);
s:=s+x[i]*t;
end;
writeln(s);
end.
const
m=10;
var
t,i,s:integer;
x:array[1..m] of integer;
begin
for i:=1 to m do
begin
x[i]:=random(20);
write(' ',x[i]);
end;
writeln();
t:=-1;
for i:=1 to m do
begin
t:=t*(-1);
s:=s+x[i]*t;
end;
writeln(s);
end.