/ http://challenge.greplin.com / longest substring match reverse a:"..oranynartionso..struggledherehaveconsec..increaseddevotion.." /{{x~|x}#x':a}'4+!6 / sum prime factors of 1+firstprimefib > 227000 f:{$[x<4;,2;r,1_x^r*!:'-_-x%r:f@-_-%x]};p:f 1000000 / primes*x*(x:*x)in p}(|+\)/1 1 / count subsets with max=sum remaining x:1 2 3 4 6 x:3 4 9 14 15 19 28 37 47 50 54 56 59 61 70 73 78 81 92 95 97 99 +/-1+(1{(y,x)+x,y:&y}/x)x \ /other solutions: +/(2*|/s)=+/s:x*!2+&#x +/(2*|/'s)=+/'s:(,!0){x,x,'y}/x