15 lines
450 B
Rust
15 lines
450 B
Rust
use regex::Regex;
|
|
|
|
fn main() -> std::io::Result<()> {
|
|
let mut sum: u32 = 0;
|
|
let re = Regex::new(r"mul\(([0-9]*),([0-9]*)\)").unwrap();
|
|
let hay = std::io::read_to_string(std::io::stdin()).unwrap();
|
|
for (_, [num1, num2]) in re.captures_iter(&hay).map(|c| c.extract()) {
|
|
let num1: u32 = num1.parse().unwrap();
|
|
let num2: u32 = num2.parse().unwrap();
|
|
sum += num1 * num2;
|
|
}
|
|
println!("{}", sum);
|
|
Ok(())
|
|
}
|