70 lines
2.0 KiB
Zig
70 lines
2.0 KiB
Zig
const std = @import("std");
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const Allocator = std.mem.Allocator;
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const ArrayList = std.ArrayList;
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const Map = std.AutoHashMap;
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const StringHashMap = std.StringHashMap;
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const BitSet = std.DynamicBitSet;
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const Str = []const u8;
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const util = @import("util.zig");
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const gpa = util.gpa;
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const input = @embedFile("input");
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pub fn main() !void {
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var line_it = split(u8, input, "\n");
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var passports = ArrayList(StringHashMap([]const u8)).init(gpa);
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var fields = StringHashMap([]const u8).init(gpa);
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while (line_it.next()) |line| {
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if (line.len == 0) {
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try passports.append(try fields.clone());
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fields.clearAndFree();
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} else {
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var token_it = tokenize(u8, line, " :");
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while (token_it.next()) |token| {
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try fields.put(token, token_it.next().?);
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}
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}
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}
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try passports.append(fields);
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const required_fields = [_][]const u8{ "byr", "iyr", "eyr", "hgt", "hcl", "ecl", "pid" };
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var valid_count: usize = 0;
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for (passports.items) |passport| {
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var valid: bool = true;
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for (required_fields) |required_field| {
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valid = valid and passport.contains(required_field);
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}
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if (valid) valid_count += 1;
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}
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print("{}\n", .{valid_count});
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}
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// Useful stdlib functions
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const tokenize = std.mem.tokenize;
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const split = std.mem.split;
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const indexOf = std.mem.indexOfScalar;
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const indexOfAny = std.mem.indexOfAny;
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const indexOfStr = std.mem.indexOfPosLinear;
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const lastIndexOf = std.mem.lastIndexOfScalar;
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const lastIndexOfAny = std.mem.lastIndexOfAny;
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const lastIndexOfStr = std.mem.lastIndexOfLinear;
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const trim = std.mem.trim;
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const sliceMin = std.mem.min;
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const sliceMax = std.mem.max;
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const parseInt = std.fmt.parseInt;
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const parseFloat = std.fmt.parseFloat;
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const min = std.math.min;
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const min3 = std.math.min3;
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const max = std.math.max;
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const max3 = std.math.max3;
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const print = std.debug.print;
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const assert = std.debug.assert;
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const sort = std.sort.sort;
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const asc = std.sort.asc;
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const desc = std.sort.desc;
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