from collections import deque

N,M = map(int,input().split())
l = [[] for _ in range(N)]
visited = [False]*N

for _ in range(M):
  a,b = map(int,input().split())
  a -= 1
  b -= 1
  l[a].append(b)
  l[b].append(a)

num = 0

for i in range(N):
  if len(l[i]) >1:
    continue
  visited[i] = True
  que = deque([i])
  while que:
    v = que.popleft()
    for vv in l[v]:
      if not visited[vv]:
        que.append(vv)
        visited[vv] = True
        num += 1

if num%2 != 0:
  print('Yes')
else:
  print('No')