n=int(input())
a = list(map(int, input().split()))
#a.sort()
mns=[]
pls=[]
for i in range(n):
    if a[i] <0:
        mns.append(a[i])
    else:
        pls.append(a[i])
mns.sort()
pls.sort(reverse=True)
while len(mns)>0 and len(pls)>0:
    mval=mns.pop()
    pval=pls.pop()
    if pval+mval>0:
        pls.append(pval+mval)
    elif pval+mval<0:
        mns.append(pval+mval)
if len(mns)+len(pls)==1:
    print("Yes")
else:
    print("No")