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.
n,i,k:integer;
begin
readln(n);
setlength(a,n);
for i:=0 to n-1 do begin
read(a[i]);
if a[i]>7 then begin a[i]:=7; k+=1; end;
end;
writeln(k);
for i:=0 to n-1 do
write(a[i],' ');
end.
var a:array[1..10] of integer;
i,p:integer;
begin
p:=1;
for i:=1 to 10 do begin
read(a[i]);
p*=a[i];
end;
writeln(p);
end.
var a:array of integer;
i,sr,n:integer;
begin
readln(n);
setlength(a,n);
for i:=0 to n-1 do begin
read(a[i]);
sr+=a[i];
end;
writeln(sr/n:3:2);
end.
var a:array of integer;
n,i,k:integer;
begin
readln(n);
setlength(a,n);
for i:=0 to n-1 do begin
read(a[i]);
if a[i]>0 then k+=1;
end;
writeln(k);
end.
var a:array of integer;
n,i,k1,k2:integer;
begin
readln(n);
setlength(a,n);
for i:=0 to n-1 do begin
read(a[i]);
if odd(a[i]) then k2+=1
else k1+=1;
end;
writeln(k1,' ',k2);
end.