i:#'=.1:"i/11.in"
c:{:[~x;,1;2!#$x;,2024*x;.'2 0N#$x]}  / change a rock
b:{+/'=!/+,/(.x),''c'!x}              / blink
+/25 b/i                              / part 1: 25 blinks
+/75 b/i                              / part 2: 75 blinks

Two easy days in a row? I'm scared for tomorrow...

~/aoc24k/11.html