n=int(input())
m=-1
k=0
for i in range(n):
a=int(input())
if a>m:
m=a
if a==0:
k+=1
print(m)
if k!=0:
print("Yes")
else:
print("No")
школа 1747
n=int(input())
m=-1
k=0
for i in range(n):
a=int(input())
if a>m:
m=a
if a==0:
k+=1
print(m)
if k!=0:
print("Yes")
else:
print("No")