a[111111],b[111111],*p,X,Y;main(T){scanf("%d%d%d",&T,&Y,&X);if(T<Y||T<X||!(X||Y||T-1)){puts("NO");}else{puts("YES");for(p=a;p<a+Y;*p++=1);for(;p<a+T-1;*p++=1,*p++=3);for(p=b;p<b+X;*p++=1);for(;p<b+T-1;*p++=1,*p++=3);for(p=a;T--;printf("%s%s\n","\0^\0v"+*p++,"\0>\0<"+b[T]));}return 0;}