Код на C++:
#include <iostream>
#include <ctime>
using namespace std;
int main()
{
setlocale(LC_ALL, "rus");
srand(time(NULL));
int rows = 30;
int chairs = 0;
for (int i = 1, count_of_chairs = 20; i <= 30; i++, count_of_chairs += 2)
{
chairs += count_of_chairs;
}
cout << chairs << endl;
return 0;
};
Код на Python:
rows = 30
chairs = 0
count_of_chairs = 20
for i in range(1, 31, 1):
chairs += count_of_chairs
count_of_chairs += 2
print(chairs)
Объяснение:
Поделитесь своими знаниями, ответьте на вопрос:
program z1;
uses crt;
var n,m,kd,i,j,s: integer;
begin repeat write('n='); readln(n);
write('m='); readln(m);
until (n< m); for i: =n to m do
begin
kd: =0;
for j: =2to i div2do
if i mod j=0then inc(kd);
if kd=0then
begin
write(i,' '); inc(s);
end;
end;
writeln;
writeln('всего ',s); end.