from math import sqrt

M=10**9
ANS=[(101000,999999995),(202000, 999999980)]

def outer_product(x,y,z,w):
    return x*w-y*z

N=1000000
while len(ANS)<N//4:
    s,t=ANS[-1]
    u,v=ANS[-2]

    OK=10**9
    NG=ANS[-1][0]

    while OK>NG+1:
        mid=(OK+NG)//2

        x,y=mid,round(sqrt(M*M-mid*mid))

        if outer_product(u-s,v-t,x-u,y-v)<0:
            NG=mid
        else:
            OK=mid
            
    ANS.append((OK,round(sqrt(M*M-OK*OK))))


Q=ANS

ANS=[]

for i in range(len(Q)):
    x,y=Q[i]
    ANS.append(str(x)+" "+str(y))

for i in range(len(Q)):
    z,w=Q[-1-i]
    ANS.append(str(z)+" "+str(-w))

for i in range(len(Q)):
    x,y=Q[i]
    ANS.append(str(-x)+" "+str(-y))

for i in range(len(Q)):
    z,w=Q[-1-i]
    ANS.append(str(-z)+" "+str(w))


n=10**6
ANS=ANS[:n]
ANS.reverse()
print(len(ANS),flush=True)
print("\n".join(ANS),flush=True)