import std.algorithm, std.container, std.conv, std.math, std.range, std.typecons, std.stdio, std.string;

auto rdsp(){return readln.splitter;}
void pick(R,T)(ref R r,ref T t){t=r.front.to!T;r.popFront;}
void readV(T...)(ref T t){auto r=rdsp;foreach(ref v;t)pick(r,v);}

void main()
{
  string ns; readV(ns);
  string ks; readV(ks);

  auto n = ns.map!(c => cast(int)(c-'0')).array;
  auto k = ks.map!(c => cast(int)(c-'0')).array;

  auto nm2 = n[$-1]%2, nm3 = n.sum%3, km2 = k[$-1]%2;
  auto nm6 = [[0,4,2],[3,1,5]][nm2][nm3];
  auto nkm6 = [[0,1,4,3,4,1],[0,1,2,3,4,5]][km2][nm6];

  writeln("428571"[nkm6]);
}