#include using i32 = std::int32_t; using u32 = std::uint32_t; using i64 = std::int64_t; using u64 = std::uint64_t; using i128 = __int128_t; using u128 = __uint128_t; using isize = std::ptrdiff_t; using usize = std::size_t; class rep { struct Iter { usize itr; constexpr Iter(const usize pos) noexcept : itr(pos) {} constexpr void operator++() noexcept { ++itr; } constexpr bool operator!=(const Iter& other) const noexcept { return itr != other.itr; } constexpr usize operator*() const noexcept { return itr; } }; const Iter first, last; public: explicit constexpr rep(const usize first, const usize last) noexcept : first(first), last(std::max(first, last)) {} constexpr Iter begin() const noexcept { return first; } constexpr Iter end() const noexcept { return last; } }; template using Vec = std::vector; void main_() { usize N, M; std::cin >> N >> M; Vec> graph(N); for (const auto i : rep(0, M)) { usize a, b; std::cin >> a >> b; a -= 1; b -= 1; graph[a].insert(b); graph[b].insert(a); } std::queue que; for (const auto u : rep(0, N)) { if (graph[u].size() == 1) { que.push(u); } } usize ans = 0; while (!que.empty()) { const auto u = que.front(); que.pop(); if (graph[u].size() != 1) { continue; } ans += 1; for (const auto v : graph[u]) { graph[v].erase(u); if (graph[v].size() == 1) { que.push(v); } } graph[u].clear(); } std::cout << (ans % 2 == 1 ? "Yes" : "No") << '\n'; } int main() { std::ios_base::sync_with_stdio(false); std::cin.tie(nullptr); main_(); return 0; }