#pragma GCC optimize("O3") #include using namespace std; using ll=long long; using P=pair; template using V=vector; #define fi first #define se second #define all(v) (v).begin(),(v).end() const ll inf=(1e18); //const ll mod=998244353; const ll mod=1000000007; const vector dy={-1,0,1,0},dx={0,-1,0,1}; ll GCD(ll a,ll b) {return b ? GCD(b,a%b):a;} ll LCM(ll c,ll d){return c/GCD(c,d)*d;} struct __INIT{__INIT(){cin.tie(0);ios::sync_with_stdio(false);cout< bool chmax(T &a, const T &b) { if (a bool chmin(T &a, const T &b) { if (a>b) { a=b; return 1; } return 0; } templatevoid debag(const vector &a){cerr<<"debag :";for(auto v:a)cerr<void print(const vector &a){for(auto v:a)cout<>n>>m; V> g(n); V in(n,0); for(int i=0;i>a>>b;--a;--b; g[a].emplace_back(b); g[b].emplace_back(a); in[a]++; in[b]++; } int c=0; queue q; for(int i=0;i> used(n,V(n,false)); while(q.size()){ int cur=q.front(); q.pop(); bool ok=false; for(int v:g[cur]){ if(used[cur][v])continue; used[cur][v]=true; used[v][cur]=true; ok=true; in[v]--; if(in[v]<=1){ in[v]=0; q.emplace(v); } } if(ok)c^=1; } cout<<(c?"Yes":"No")<<"\n"; }