a,b=map(int,input().split())
c=list(map(int,input().split()))
ans=0
zoff=[]
strawberry=[[] for i in range(a)]
very=sorted(set(c))
for _ in very:
	zoff.append(c.count(_))
for i in range(a-1):
	for j in range(i+1,a):
		if c[i]==c[j]:
			strawberry[i].append(j)
			strawberry[j].append(i)
ans=sum(zoff)-len(zoff)
for i in range(b):
	yaakiyu,kafeore=map(int,input().split())
	if kafeore-1 in strawberry[yaakiyu-1]:
		ans-=1
print(ans)