ANS=[(10**9,0),(0,10**9),(-10**9,0),(0,-10**9)]

N=10**6
while len(ANS)<N:
    X=[]
    for i in range(len(ANS)):
        x,y=ANS[i-1]
        z,w=ANS[i]

        u,v=(x+z)//2,(y+w)//2

        if u>0:
            u+=2
        else:
            u-=2

        if v>0:
            v+=2
        else:
            v-=2

        X.append((u,v))

    ANS2=[]
    for i in range(len(ANS)):
        ANS2.append(X[i])
        ANS2.append(ANS[i])

    ANS=ANS2

ANS=ANS[:N]

for i in range(N):
    ANS[i]=str(ANS[i][0])+" "+str(ANS[i][1])

print(N,flush=True)
print("\n".join(ANS))