n=int(input())
s=0
for i in range(1,n):
    if n%i==0:
        s=s+i
if n==s:
    print("yes")
else:
    print("no")

a=int(input())
s=0
for i in range(1,a):
if(a%i==0):
s=s+i
if(s==a):
print("yes")
else:
print("no")

n=int(input())
m=0
k=0
while(m<n-1):
m=m+1
if(n%m!=0):
continue
k=m+k
if(k==n):
print("yes")
else:
print("no")

N=int(input())
i=0
s=0
for i in range(1,N):
if N%i==0:
s=s+i
if s==N:
print("yes")
else:
print("no")