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const indexOfScalar = std.mem.indexOfScalar;
const print = std.debug.print;
const std = @import("std");
const tokenize = std.mem.tokenize;
const digits = [_]u7{
0b1110111,
0b0010010,
0b1011101,
0b1011011,
0b0111010,
0b1101011,
0b1101111,
0b1010010,
0b1111111,
0b1111011,
//8687497
};
pub fn main() void {
var sum: usize = 0;
defer print("{}\n", .{ sum });
var input = tokenize(@embedFile("input"), "\n");
while (input.next()) |line| {
var freq = [_]u8{ 0 } ** 7;
for (line[0..58]) |c|
switch (c) {
'a'...'g' => freq[c - 'a'] += 1,
else => {},
};
var patterns = tokenize(line[0..58], " ");
while (patterns.next()) |p|
if (p.len == 4)
for (freq) |*f, i| {
if (indexOfScalar(u8, p, 'a' + @intCast(u8, i))) |_|
f.* -= 6;
}; // 8687497 to 8021437
var display: [7]u3 = undefined;
for (freq) |f, i|
display[i] = switch (f) {
8 => 0, 0 => 1, 2 => 2, 1 => 3, 4 => 4, 3 => 5, 7 => 6,
else => unreachable,
};
var output = tokenize(line[61..], " ");
var pow: usize = 1000;
while (output.next()) |s| : (pow /= 10) {
var digit: u7 = 0;
for (s) |c|
digit |= @as(u7, 0b1000000) >> display[c - 'a'];
sum += pow * indexOfScalar(u7, digits[0..], digit).?;
}
}
}
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