from math import sin,cos,pi

N=100000
M=10**9-100
ANS=[]
ANS.append(str(N))
for i in range(N):
    ANS.append(str(round(M*cos(2*pi*i/N)))+" "+str(round(M*sin(2*pi*i/N))))
print("\n".join(ANS),flush=True)