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use fmt;
use io;
use os;
use strconv::{stou8};
use strings::{fromutf8_unsafe, split, sub};
fn joltage(bank: str) u8 = {
let first: u8 = 1;
let second: u8 = 1;
let first_index: size = 0;
for (let i: size = 0; i < len(bank); i += 1) {
let val = stou8(sub(bank, i, i + 1))!;
if (val > first && i < len(bank) - 1) {
first = val;
first_index = i;
};
};
for (let i: size = first_index + 1; i < len(bank); i += 1) {
let val = stou8(sub(bank, i, i + 1))!;
if (val > second)
second = val;
};
return first * 10 + second;
};
export fn main() void = {
let handle = os::open("input.txt")!;
defer io::close(handle)!;
let buf = io::drain(handle)!;
defer free(buf);
let lines = split(fromutf8_unsafe(buf), "\n")!;
let output = 0;
for (let line .. lines)
if (line != "")
output += joltage(line): int;
fmt::printfln("Answer: {}", output)!;
};
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