6) ln = float(input())
print(((ln / 2 / 3.14) ** 2) * 3.14)
7) x, y = int(input()), int(input())
print (x + y)
8) r = float(input())
print((r ** 2) * 3.14)
9) print((2 * 2 + 6 * 6)**0.5)
10) print((2 ** 6) + 13)
11) x, y = float(input()), float(input())
x, y = max(x, y), min(x, y)
print(x, y)
12) a, b = int(input()), int(input())
res = [str(j) for j in range(a, b + 1)]
print(' '.join(res))
13) m. n = float(input()), float(input())
if max(m, n) == m: print("первый " + str(m))
else: print("второй " + str(n))
14) tb = {'1':'шуруп', '2':'гайка', '3':'вин', '4':'гвоздь', '5':'болт'}
print(tb[input()])
15)tb = {'1':'плохо', '2':'неудовлетворительно', '3':'удовлетворительно', '4':'хорошо', '5':'отлично'}
print(tb[input()])
16) for goose in range(33): print('goose - ' + str(goose), 'кроликов - ' + str((64 - ((goose) * 2)) // 4))
17)tb = [5000, 1000, 500, 100, 50, 10]
s = int(input())
for j in tb: print(str(s // j) + " по " + str(j)); s %= j
18) x = float(input())
if x <= 7: print(-3 * x + 9)
else: print(1 / (x - 7))
19) points = [0, 0, 0]
tb = {0:'Иванов', 1:'Петров', 2:'Сидоров'}
for round in range(3): points[0] += int(input()); points[1] += int(input()); points[2] += int(input())
print(tb[points.index(max(points))])
20) tb = {1:'+', 2:'-', 3:'*', 4:'/'}
x, y = float(input()), float(input())
operation = int(input())
print(eval(str(x) + tb[operation] + str(y)))
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <math.h>
#define size 15
int mass[size];
void randArray()
{
printf("An array of the fiveteen random elements:\n");
for (int i=0; i<size; i++)
{
mass[i] = 1 + rand() % 100;
printf("%d\t", mass[i]);
}
}
int findElements(unsigned count)
{
count = 0;
for (int i=0; i<size; i++)
{
if (abs(mass[i]) % 10 == 6) count++;
}
return count;
}
int main()
{
unsigned count = 0;
srand(time(NULL));
randArray();
printf("\nNumber of elements which ending on six: %d", findElements(count));
return 0;
}
