#pragma GCC optimize("Ofast")
#pragma GCC target("avx2")

#define rd_skip() while(*rp++>=48)
#define rd(v) long v=0;{int _c;while(_c=*rp++-48,_c>=0)v=v*10+_c;}

char rbuf[64<<10];
short g[5000][5001];
long d[5001];

main(){
	read(0,rbuf,sizeof rbuf);
	char*rp=rbuf;
	rd(n);
	rd_skip();
	while(*rp){
		rd(a);
		rd(b);
		g[d[a]++][a]=b;
		g[d[b]++][b]=a;
	}
	long z=0;
	for(long i=1;i<=n;++i){
		long j=i;
		while(d[j]==1){
			--d[j];
			z^=1;
			long k=0,l=0;
			while(!d[l=g[k++][j]]);
			j=l;
			--d[j];
		}
	}
	if(z){
		write(1,"Yes",3);
	}else{
		write(1,"No",2);
	}
	_exit(0);
}