import math

N = 10**6
st = set()
ok = False
for i in range(1, 1300):
    for j in range(1, 1300):
        g = math.gcd(i, j)
        st.add((math.atan2(j//g, i//g), i//g, j//g))
        if len(st) == N:
            ok = True
            break
    if ok == True:
        break
L = list(st)
L.sort()

ans = []
nowx = -10**9 + 1
nowy = -10**9 + 1
for i in range(N):
    x, y = L[i][1], L[i][2]
    nowx += x
    nowy += y
    # ans.append((nowx, nowy))
    ans.append(str(nowx) + ' ' + str(nowy))

print(N)
print('\n'.join(ans))
# for i in range(N):
#     print(ans[i][0], ans[i][1])