Gerbil's run

from math import *

r = int(input())

c = 2*pi*r

n = floor(pi*r)

if floor(c) % 2 == 0:
    x = [2*i for i in range(n)]
    y = [a+1 for a in x]
    print(*(f"{x[i]}/1 {y[i]}/1" for i in range(n)), sep="\n")
else:
    x = [2*i for i in range(n-2)]
    y = [a+1 for a in x]
    left = c - (2*(n-1)-1)
    o_len = (left-1)/2
    den = 100000
    o_len_num = floor(o_len*den)
    x_last_num = y[-1]*den + o_len_num
    y_last_num = x_last_num + den
    xs = [f"{a}/1" for a in x]
    ys = [f"{a}/1" for a in y]
    xs.append(f"{x_last_num}/{den}")
    ys.append(f"{y_last_num}/{den}")
    print(*(f"{xs[i]} {ys[i]}" for i in range(n-1)), sep="\n")

    

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: WRONG ANSWER

Test 5

Verdict: WRONG ANSWER

Test 6

Verdict: WRONG ANSWER

Test 7

Verdict: WRONG ANSWER

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: WRONG ANSWER

Test 12

Verdict: WRONG ANSWER

Test 13

Verdict: WRONG ANSWER

Test 14

Verdict: WRONG ANSWER

Test 15

Verdict: ACCEPTED

Test 16

Verdict: ACCEPTED

Test 17

Verdict: ACCEPTED

Test 18

Verdict: WRONG ANSWER

Test 19

Verdict: WRONG ANSWER

Test 20

Verdict: WRONG ANSWER

Test 21

Verdict: ACCEPTED

Test 22

Verdict: WRONG ANSWER

Test 23

Verdict: ACCEPTED

Test 24

Verdict: ACCEPTED

Test 25

Verdict: ACCEPTED

Test 26

Verdict: ACCEPTED

Test 27

Verdict: ACCEPTED

Test 28

Verdict: WRONG ANSWER

Test 29

Verdict: WRONG ANSWER

Test 30

Verdict: WRONG ANSWER

Test 31

Verdict: ACCEPTED

Test 32

Verdict: ACCEPTED

Test 33

Verdict: WRONG ANSWER

Test 34

Verdict: WRONG ANSWER

Test 35

Verdict: WRONG ANSWER

Test 36

Verdict: ACCEPTED

Test 37

Verdict: ACCEPTED

Test 38

Verdict: ACCEPTED

Test 39

Verdict: WRONG ANSWER

Test 40

Verdict: ACCEPTED

Test 41

Verdict: ACCEPTED

Test 42

Verdict: ACCEPTED

Test 43

Verdict: ACCEPTED

Test 44

Verdict: ACCEPTED

Test 45

Verdict: WRONG ANSWER