M=int(input())

L=[]
for i in range(1,10**4+1):
    L.append(i*(i+1)//2)
L.reverse()

X=[0]*(10**4)

for i in range(10**4):
    k=M//L[i]
    X[i]=k
    M-=L[i]*k

ANS=[]

for i in range(10**4):
    ANS+=["c"]*X[i]
    ANS+=["on"]

print("".join(ANS))