1)
var
s : real;
i, n : integer;
begin
s := 0;
read (n);
for i := 1 to n do s := s + 1 / i;
writeln (s);
end.
2)
var
a, i : integer;
begin
a := 1;
for i := 1 to 8 do
begin
a := a * 2;
writeln ('Через ', i * 3, 'часов будет ', a, ' амеб');
end;
end.
3)
var
n, i : integer;
x, s : real;
begin
s := 0;
read (n, x);
for i := 1 to n do
s := s + sin (i * x);
writeln (s);
end.
4)
var
n, a, r, i : integer;
begin
r := 1;
read (a, n);
for i := 1 to n do r := r * a;
writeln (r);
end.
Begin
writeln('Enter A:');
readln(a);
V:=a*3;
S:=6*2*a;
writeln('V=',V,'; S=',S,';');
end.
var a,b,sum,dob,raz:integer;
Begin
writeln('Enter A:');
readln(a);
writeln('Enter B:');
readln(b);
sum:=abs(a)+abs(b);
raz:=abs(a)-abs(b);
dob:=abs(a)*abs(b);
writeln('Summa=',sum,'; Raznost=',raz,'; Dobutok=',dob,';');
end.