#!/usr/local/bin/python3 I,J,K,F=1,0,2,1 c=[(K+3)%7,(J+4)%7,(J+2*K+1)%7] b=[(I+F)%2,(J+F)%2,(K+F)%2] q=(I+K+F)%7 h=-1 for i in range(3): if c[i]==q:h=i print(c,b,q,h,c[h]+b[h]+(I+F))