program z1221;

type TSet= Set of 0..9;

var n,m:longInt;

mn_n,mn_m:Tset;

Procedure Init(x:LongInt; var mn:Tset);

begin

mn:=[];

While x<>0 do

begin

mn:=mn+[x mod 10];

x:=x div 10;

end;

end;

begin

writeln ('vv 1 ch');

readln(n); Init(n,mn_n);

Writeln('vv 2 ch');

readln(m);Init(m,mn_m);

if mn_n+mn_m=[0..9] then writeln('verno')

else writeln('nev');

readln;end.