1 files changed, 6 insertions(+), 12 deletions(-)

M 3/main.zig

@@ 1,15 1,9 @@
 const std = @import("std");
 const input = @embedFile("input");
 const w = 32;
-
-fn slope(sx: usize, sy: usize) usize {
-    var t: usize = 0; var x: usize = 0; var y: usize = 0; var i: usize = 0;
-    while (i < input.len) : ({ y += sy; x += sx; i = (w * y) + @mod(x, w-1); }) t += @boolToInt(input[i] == '#');
-    return t;
-}
-
-pub fn main() void {
-    var part1 = slope(3, 1);
-    var part2: usize = 1; for ([_][2]u8{.{ 1, 1 }, .{ 3, 1 }, .{ 5, 1 }, .{ 7, 1 }, .{ 1, 2 }}) |s| part2 *= slope(s[0], s[1]);
-    std.debug.print("part 1: {}\npart 2: {}\n", .{ part1, part2 });
-}>
\ No newline at end of file
+fn slope(sx: usize, sy: usize) usize {var t:usize=0;var x=t;var y=t;var i=t;
+    while (i<input.len):({y+=sy;x+=sx;i=(w*y)+(x%(w-1));}) t+=@boolToInt(input[i]=='#');
+    return t;}
+pub fn main() void {var p1=slope(3, 1);var p2:usize=1;
+    for ([_][2]u8{.{1,1},.{3,1},.{5,1},.{7,1},.{1,2}})|s|p2*=slope(s[0],s[1]);
+    std.debug.print("part 1: {}\npart 2: {}\n",.{p2,p2});}<
\ No newline at end of file