day6

2 files changed, 336 insertions, 0 deletions

diff --git a/day6 b/day6
new file mode 100644
index 0000000..c4357c6
--- /dev/null
+++ b/day6
@@ -0,0 +1,300 @@
+turn on 887,9 through 959,629
+turn on 454,398 through 844,448
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+turn off 370,819 through 676,868
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diff --git a/day6.k b/day6.k
new file mode 100644
index 0000000..6f95738
--- /dev/null
+++ b/day6.k
@@ -0,0 +1,36 @@
+d:0:"day6";
+
+ss:{1 _' (&y=y,x) _ y,x}; / split x at y
+ds:{0$ss[x;","]}; / split , digits
+rg:{(x&y)+!(_abs x - y)+1}; / range x..y inclusive
+
+l:ss[;" "]' d;
+
+f:1000 1000 # 0;
+
+on:    {f[rg[x[0];x[2]];rg[x[1];x[3]]]:1};
+off:   {f[rg[x[0];x[2]];rg[x[1];x[3]]]:0};
+toggle:{f[rg[x[0];x[2]];rg[x[1];x[3]]]~:};
+
+op:{
+ :["on"~x[1];on[,/ds'x[2 4]]
+   "off"~x[1];off[,/ds'x[2 4]]
+   "toggle"~x[0];toggle[,/ds'x[1 3]]]
+};
+
+op' l;
+
+#&,/f
+
+/ 2nd part
+
+f:1000 1000 # 0;
+
+on:    {f[rg[x[0];x[2]];rg[x[1];x[3]]]+:1};
+off:   {f[rg[x[0];x[2]];rg[x[1];x[3]]]-:1
+        f[rg[x[0];x[2]];rg[x[1];x[3]]]|:0};
+toggle:{f[rg[x[0];x[2]];rg[x[1];x[3]]]+:2};
+
+op' l;
+
++/+/f