class UnionFind():
    def __init__(self, n):
        self.n = n
        self.parents = [-1] * n

    def find(self, x):
        if self.parents[x] < 0:
            return x
        else:
            self.parents[x] = self.find(self.parents[x])
            return self.parents[x]

    def union(self, x, y):
        x = self.find(x)
        y = self.find(y)

        if x == y:
            return

        if self.parents[x] > self.parents[y]:
            x, y = y, x

        self.parents[x] += self.parents[y]
        self.parents[y] = x

    def size(self, x):
        return -self.parents[self.find(x)]

    def same(self, x, y):
        return self.find(x) == self.find(y)

    def roots(self):
        return [i for i, x in enumerate(self.parents) if x < 0]

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

for i in range(M):
  a, b = map(int, input().split())
  a, b = a - 1, b - 1
  uf.union(a, b)


ans = 0
for p in uf.roots():
  ans += uf.size(p) - 1



if ans % 2 == 1:
  print('Yes')
else:
  print('No')