import sys
input = lambda :sys.stdin.readline()[:-1]
ni = lambda :int(input())
na = lambda :list(map(int,input().split()))
sys.setrecursionlimit(10**7)
yes = lambda :print("yes");Yes = lambda :print("Yes")
no = lambda :print("no");No = lambda :print("No")
#######################################################################

n,m = na()
g = [[]for i in range(n)]
ins = [0]*n
for i in range(m):
    a,b = na()
    a-=1;b-=1
    ins[a]+=1
    ins[b]+=1
    g[a].append(b)
    g[b].append(a)
q = []
for i in range(n):
    if ins[i]==1:
        q.append(i)

ans = 0

while q:
    e = q.pop()
    if ins[e]==0:
        continue
    ans += 1
    for i in g[e]:
        ins[i]-=1
        if ins[i]==1:
            q.append(i)
if ans%2:
    Yes()
else:
    No()