program Project2;

{$APPTYPE CONSOLE}
const n=10;
var
b,c,x,y:array [1..n] of integer;
i,d:integer;
begin

for i:=1 to n do
readln(x[i],y[i]);
for i:=1 to n-1 do  begin
b[i]:=x[i]-x[i+1];
c[i]:=y[i]-y[i+1];
end;

for i:=1 to n-1 do  begin
d:=b[i]*c[i+1]-b[i+1]*c[i];
if d>0 then writeln('vlivo');
if d<0 then writeln('vpravo');
if d=0 then writeln ('prymo');
end;


x[i]:=x[i+1];
y[i]:=y[i+1];
x[i+1]:=x[i+2];
y[i+1]:=y[i+2];

readln;
end.