#include <bits/stdc++.h>

using namespace std;

int a,b,c,d,e,f,g,h,i;

int x,y,z;

int main()

{ cin>>a>>b>>c;

cin>>d>>e>>f;

cin>>g>>h>>i;

x = a10000+b100+c;

y = d10000+e100+f;

z = g10000+h100+i;

if((z>=x && z<=y)||(z>=y && z<=x))

cout<<"Yes";

else cout<<"No";

return 0;

}