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43 lines
882 B
Zig
43 lines
882 B
Zig
const input = @embedFile("inputPart2.txt");
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const std = @import("std");
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pub fn main() !void {
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//Data wrangling
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var it = std.mem.tokenize(u8, input, "\n");
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var busses: [68]u32 = std.mem.zeroes([68:0]u32);
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var i: u32 = 0;
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while (it.next()) |line| : (i += 1) {
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busses[i] = readNum(line);
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}
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//count total active buslines
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var busTotal: u8 = 0;
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for (busses) |bus| {
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if (bus > 0)
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busTotal += 1;
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}
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var stepSize: u64 = 1;
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var n: u64 = 1;
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for (busses, 0..) |bus, offset| {
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//skip
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if (bus == 0) {
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continue;
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}
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while (((n + offset) % bus) != 0) : (n += stepSize) {}
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stepSize = stepSize * bus;
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}
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std.debug.print("tick: {d}", .{n});
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}
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fn readNum(line: []const u8) u32 {
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return std.fmt.parseInt(u32, line, 10) catch {
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return 0;
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};
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}
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