[Python] softeer.ai 우물 안 개구리

 

 

import sys
input = sys.stdin.readline

N, M = map(int, input().split())

W = list(map(int, input().split()))

member = [True] * N

for _ in range(M):
    a, b = map(int, input().split())
    
    if W[a - 1] > W[b - 1]:
        member[b - 1] = False
    elif W[a - 1] < W[b - 1]:
        member[a - 1] = False
    else:
        member[a - 1] = False
        member[b - 1] = False

answer = 0
for mem in member:
    if mem == True:
        answer += 1

print(answer)