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34 lines
885 B
34 lines
885 B
const std = @import("std");
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fn solveLine(line: []const u8) i64 {
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var result: u32 = 0;
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var i: usize = 0;
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while (i < line.len) {
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var current_number: u16 = 0;
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while (i < line.len and line[i] != ',') : (i += 1) {
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current_number += line[i];
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current_number *= 17;
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current_number %= 256;
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}
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result += current_number;
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i += 1;
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}
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return result;
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}
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pub fn main() !void {
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const stdout = std.io.getStdOut().writer();
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const raw_in = std.io.getStdIn();
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var buffered_reader = std.io.bufferedReader(raw_in.reader());
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var reader = buffered_reader.reader();
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var result: i64 = 0;
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var line_buffer: [30000]u8 = undefined;
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while (try reader.readUntilDelimiterOrEof(&line_buffer, '\n')) |line| {
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result += solveLine(line);
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}
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try stdout.print("{d}\n", .{result});
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}
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