day 25 optimize and improve heuristics

[aoc_eblake.git] / 2020 / day6.c

/*#define C __builtin_popcount*/
r,p,P,c,s,S,i;
C(x){for(i=0;x;i++)x&=x-1;return i;}
main(){while(read(0,&c,1))c-10?r|=1<<(c-97):r?p|=r,P|=~r,r=0:(s+=C(p),S+=C(~P),p=P=0);printf("%d %d",s+C(p),S+C(~P));}