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Day 18 part 1 works

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Sebastian 2020-12-18 15:33:43 +01:00
parent cc7dfbef91
commit 71dc5aef59
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@ -0,0 +1,378 @@
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(5 + 3 + (6 * 2 + 5 + 4 + 3 + 9) + 5) + 5 * 9 * 8 * 8 + 3
(3 + 8 * 8 * 2 * 3) + 7 + 4 + 3 + 5 + 4
7 + 9 + 5 * 6 * 9 + ((4 * 8 * 7 + 8 * 2 * 8) + (7 * 2 + 9 + 4 + 2 * 4) * 2)
((6 * 4 + 8 * 7) + 9 + 5 * 5) * 8 + 8 + 4
(6 + 2 * 6 + 4) + ((5 * 4 + 5) * 4 + 3)
6 + (2 * 4 * 4 + 6) + (8 * 5 * 2) * 4
7 + (4 + 3 * 5 * 5 * 5 * 4) * 4
(6 + 2) + (9 + 6 + (9 + 3) + (3 + 7 + 2 * 6) + 6) * 3 + 5 + 8 + 7
2 + (9 * (4 * 7 * 9) + 7 * 5 + 2) * 3
6 * (6 * 8 * 3 * 6 * 3 + 4)
4 + (2 + (3 + 3 * 8) + 8 + 4 + 3 + 6) * (6 + (3 + 9 + 9 + 7 * 6 * 7) + 9 + 9 + 6) + 5 * 5
(9 * (6 + 7 * 5 * 9 + 3 + 8) + 4 + 4 * 6) + 8 * 3
7 * (7 * 5 * 5) + 8
8 * 8 * 2 + ((4 + 2 + 5 + 4 + 3) + 2) + (3 * 5 * 3 + 4)
9 + 2 * 9 * (8 * 7 + 2 * 3) * 2
8 * (6 * 6) * 7 + 3 * 5 * ((8 + 3) + 3 + 7 * 3)
7 * 8 * (7 + (2 + 6) * 5) + 5 + 2
3 * 2 + 5 + (5 * 9 * 8) + 7
(8 * 7 + 9) + (7 * 7 * 8 + 9 * 3) + (8 * 9 * 4 * 9)
8 * 9 + 7 * 2 + 3 + (2 + 3 * (4 * 2 * 3 * 3) + 4)
(5 + 4 * 3 + 8) * (8 * (2 + 3 + 2 + 2) + 9 * 8 * 9)
7 * 7 * 9 * (5 * 9 * 4 * 5 + (9 * 3 * 4 * 4))
4 * ((2 + 6 * 4) + 7) * 8 + 7 + ((9 + 2 + 3 + 8) + (5 * 9)) * 2
6 + 5 + 4 * 7 * 6 + (6 * 7 * 2 * 6 + 8 * 2)
4 * (8 * (5 + 2 * 2 + 4) + 4 + (2 + 8 * 3 + 7 + 8)) + (4 + 7 + 9 * 4 + 8 * (8 * 6 * 6 * 9)) + 6 * 8 * ((3 + 3 * 7 * 2 + 7 + 5) * 2 * 5)
5 * (2 * (4 * 4 * 6 + 3 + 4 + 8) * 7 * (8 * 3 + 9 + 2 * 8) * 5) + 5 * ((7 + 7 * 3 * 5 * 7 + 3) * 7 + 3 + 6 * 7) + 8
(2 * 3 + 8 * 5 * 6 + 2) * 6 + (6 * 5 + 2 * 9 + 3 * (9 + 5 * 2))
9 + ((8 + 9 * 7 * 5 * 8) * 4 * 2)
3 * 6 * 4 + 4 + 3 * (4 + 3 + 4 + 6 + (4 + 6 + 2) + 3)
5 * 2 * ((9 + 9) * 2 + (4 + 2) + 9 * 4 * 3)
(4 + 8) + 2 * 4 + 5
(3 * 7 * 5 * (7 + 6 * 9 * 2 * 7 * 3)) * 4 * 4 * 8 + 9 * 5
6 * 8 * ((5 + 4 * 4 + 9) * 4 * 6 * 9) + 9 * 9 + (2 + (9 + 3 + 7 * 7 + 2 + 8) + 7 + 4 * 8 * (8 * 3 * 3))
((9 * 6 * 6 + 3) * 2) + 7 + 6
9 * 6 * 5 + 6 * (7 * 6 * 9 + 4 * 4)
9 * (4 * 9 + 9) * (2 * 3 * 6) + 7 + (6 + 9 * 6 * 7 + 4) * 6
(2 * 9) * 2 + 5 + 6 + 8 + (8 + 7 + 3)
(2 + 3 + 6 + 2) * (6 * 3 + 7 * 5 + 5 + 7) + 4 * 4 + 2
5 + (4 + (8 + 2 + 9 + 6 + 6 * 7) + 2 + 9 + 4) * 8 * 8 * ((3 + 3 + 7) * 7 + 9 * 7 + 6 * 9) * 9
7 * (7 * 5 + 6 + (6 * 7 + 8 * 5 + 3 + 5) + 4)
6 + 4 * (3 + 2 * (5 * 7 + 6 + 2) * (8 + 8 + 2) + (7 + 2))
5 * ((4 + 5 * 9) + 3 * 4 + (2 * 3 * 2) * 5 + 4) + (7 + 9) * 6 + (8 + 2 * 6 * 9)
(4 + 9 + 2) * (4 + 8 * 9 + 6 * 8) + 4 + 8 * 9
4 + 8 + 3 + 5 + (5 * 9 * (3 * 3 * 8))
(5 + 4 * 8 + 9 * 3) * 2 + 5 + 8
(3 + 3 * 9) + 6 * (2 * 9 + 6) + 5
3 + 4 + 3 * 9 * 2 + ((7 * 7) * 3 * (9 * 5 * 7 * 4 * 2))
7 * 7 * (8 + 4) * (7 + 9 + (6 * 7 * 7 * 2 * 6 * 6) * 7)
7 + (4 + (5 + 4 + 9 * 2 + 6 * 5) + 2 + 6) + 7
(3 + (5 + 9) * 8 * 3 + 9) * 5 + ((6 * 7 * 5) * (4 * 8 + 6 + 5) + 3 + 4 + 8) + (4 * (2 + 7 + 5 * 7 + 2) * 8 * 8 + 6 + 3)
6 * (5 * 3) * 4 * 8 * 6
4 * 5 * 4 * 3 * 5
3 + 6 * 2 + 7 + ((3 + 7 + 3) + 5) * 8
9 * 5 + (6 + 7 * 9 + 8 + 3 + 8) + (9 + (2 + 9 * 4) * 9 * 9 * (3 * 2 * 3 * 5 + 3) * (2 + 9 * 3 * 4 * 7))
5 * 6 * 3 * (7 * 3 + 3 + (2 * 7))
9 + 8 * 5 + (7 * 6) * 9 + 3
8 + 6 + 4 * (6 * 8)
3 * (4 * (2 * 4 + 4 * 8 + 7) * (2 + 7 * 4 * 6 + 3) + 8 * 4) * (7 + (7 * 9 + 8 + 7 + 8 * 8))
3 + (8 * 9) * 6 + (5 + 6)
6 + 2 + (7 * 6 + 7 * 6 + 3)
5 + 9 * (9 * 7 + 4 + 6) + (9 + 7 + 6)
(9 * 7 * (3 + 6 * 3)) + 3 + 6
5 * (9 * 5 * 2 * 5) * 8
((2 + 9 * 6) * 5 * (2 + 2) + 7 * 9 + 3) + 4 + 6 + 5
6 + 8 + 9 * (4 * 2 * 7) + 4 + 6
4 * (9 * (4 * 8 + 3 * 3)) * 2
(7 * (3 + 3) * 8 * 8 * 9) + 5 + 4 + 6 * 2 + (8 * (6 * 6) + 5 * 2 * 8)
((9 * 3 * 4 + 4 + 4) + 8 * 3 + 2 + 9) + ((4 + 4 + 8 + 7 + 7 * 9) + (7 + 8 + 9 + 3 + 7) * 9 * 7 * 8)
(8 + 6 + 3 * 8 + 3) * 6 * 4 + 9 * 2 * (7 * (3 * 2 * 2 + 7 * 7 * 3) * 7 * 2 * (3 + 2 + 2 + 5) + (7 * 8 + 3))
7 + 5 * 5 * (4 + (7 * 3) * 5 + (7 + 5) + 3) * 4 * 8
4 * (3 + 6) + 8 + 6
5 * 2 * 7 + 8 * 5
3 + (9 + (4 * 5) + 5 * (9 + 3 * 3) * 3 * 5)
7 * (5 * 3 + 3 * (9 + 9 + 6 * 6 + 8 * 9) + (8 * 2 * 9 * 4))
((5 + 7 * 7 * 9 + 3) * 3 + 6) * 7 * 5
(7 * 7 * 9) * 5 + 8 * 6 * 5 + 5
2 * 6 + 3 * 4 + (9 + 4) + 4
6 * 6 + 2 * ((5 + 9 * 2 + 6) + 9 * 9 * 6 * 4 + (9 * 4 + 2)) + 3
5 * 3 * ((6 + 7 + 6 + 3 * 9 + 3) + 8 * 5 + 2) * 9 * (7 * (7 + 2 * 6 + 2 * 2) * 4 * 3) + 5
9 + ((7 + 4 + 5 * 5 * 6) + 4 + 4 * 9)
((5 + 9) * (4 * 6) * (8 + 3 * 8 + 8 + 3)) * 8 + ((5 * 5 + 5 + 4) + (4 + 9) + 2 * (7 + 5 * 4) * 5) + (5 * 5 + 2 * 3 * 6)
8 * 4 + 8 * 8
(4 + 8) + (7 + 4)
8 + (8 + 6 * 5 + 6 + 9 * 8) + 7 * 2
3 + 9 + 4 + (6 + (9 * 6 + 6 + 6) * 7) + 7 * 3
2 * (8 + 9 + 7 * 4 + (2 * 9) * 6) + 3
6 + (5 + 2)
3 * 9 * 3 + 2 + 3
4 * 3 + 8 * 2 + (2 * (8 + 2 * 5) * 3 * 4 * 3)
9 + (2 + 4 * 8 * 7 * 5) + 8 + (6 + (3 * 4 + 6) * 5 * 8 + (2 * 5 * 4 * 8 * 3 * 5))
5 + 4
4 + 8 * (6 + (3 + 9 + 5 * 4 * 8) * (8 + 3 * 2 * 5) + 9 + (9 + 2 + 6 + 6) + 4) + 5 + (6 * (3 + 3 + 5 * 6 * 9 + 2) + 4 * 4)
(9 * (6 + 9 + 4 + 6 * 9)) * 9 * 8 * 7 * 8
(4 * 6 * 6 * 7 * 3) + (3 + (3 * 8) + 3 * (8 * 4)) * 2
(7 + 2 + 6 + 2) + (4 + 5 * (5 * 2 + 4) * 3) * 5 + 4 * 5 * 8
(3 * 3 + 7 + 7 + 8) * (3 * 4 * (6 * 2 * 3 + 6 * 7 * 7) + 5 * 3 * (7 * 9 + 7 + 9 * 2))
7 + (8 + 9 * (4 + 5 + 4 + 2 + 2 * 3) * 7 + 8 * (4 * 6 * 7 * 6 * 2)) * 5 + 6 * 3 + (4 + 8)
(4 + 3) + ((9 * 7) + 2 * 2 + 4 + 6 + 7) * 6 * 3 * 8
7 + (4 * (7 * 9 + 2) + 3) * 2 * 8 + 9 + 2
8 * 5 * (7 * 8 + (7 + 6)) * 7
(4 * 6 * 9 + 7) + 3 + 6 + 2 * 3
2 * 2 * 9 * (4 * (9 * 8 * 4 + 2 + 3))
9 + 6 * ((2 * 6 + 6 + 9) + 9 * 5 + (7 * 3 * 9 * 3 + 5 + 6)) + 2 * 4
5 * 7 + (9 + 3 * 4)
5 * 3 * 3 + (9 + 3 * 9 + 5) * 7 + 8
3 + 2 + 7 + (6 + 8 + (2 * 6 + 5) * 2)
8 * 8 * (6 * (3 + 6 + 4 * 7 * 8) + 7 + 9 * (3 * 8) + 8) + 3
5 + 3 * 9 + 2 * 4 * (8 * 7 * (7 + 6) + (9 + 3 * 8 * 7 * 7 * 3))
(4 + 8 * 3 + 6 * 9) * 2 + 4 * (7 * 4) + 7 + 5
7 + ((8 + 6 + 7) * 2 * 8 + (9 * 3 + 8) + 2)
6 * 9 + (3 + 4 * 5 * (8 * 6) + 4) * 8 * (7 * 7) + 5
5 + 7 + 4 + (2 * (5 + 3 * 2 * 5 + 7 * 4))
3 + 6 * 9 + (5 + (7 + 3 * 4 * 3 * 5) * 6 * 5 * 2 * (8 * 5 * 5)) + 8
((9 + 8 * 2) + 9 * 8 * 3) + ((8 * 7 + 3 + 4 * 7 * 5) * 4 + 3) + 3 + 9 + 2
(8 + (6 * 7 + 5 * 7 * 7 + 3) + 9 + 6 * 2) * 3 + 4 + 2 + 4
5 + 8 + ((5 * 9 * 7 * 9) * 8 * 8) + (8 * 7 + 8 * (6 + 9 * 3 * 2) * 6 + 6) + 3 * 9
5 * ((3 * 5 + 3) * 7 * 3 * 3 * 6) + 4 + 6
((2 + 6 * 8 + 7) * (6 + 2 * 2) + (4 * 8 + 9) * 4 + 5) * 4 * 3
9 * 9 * 2 * 2
2 * (4 * 2 * 8 * 8) * 5 * (7 + 9 + 8)
4 + (2 + 5 + 8 + 8) * (9 + 4) * 8 + ((6 * 3 + 5 + 8 * 5 + 2) * (4 + 7 + 9) * 9 + 3 + (4 * 4 * 6 + 2 + 2) * 4) + 7
5 + 5 * 9 * (2 * 6 * 2 + 3 * 7 * (3 + 7 * 4 + 5)) + 6 + 8
9 * 4 + 2 + (6 * 8 + 5 * 7)
(6 * 5 * 7 * 8 + 3) + ((9 + 5 * 5 + 8 * 4 + 3) * 6 + (6 * 4 + 8 * 6 * 3) + 3 + 5 + 5) * 7 * 5 + 7 * 5

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src/bin/day18.rs Normal file
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use std::error::Error;
use std::fs::File;
use std::io::{self, BufRead};
use std::vec::Vec;
fn extract_paren_expression(input: &str) -> String {
let mut res: String = "".to_string();
let mut open_count = 1;
let mut close_count = 0;
for c in input[1..].chars() {
match c {
'(' => open_count += 1,
')' => {
close_count += 1;
if open_count == close_count {
return res;
}
}
_ => {}
}
res += &c.to_string();
}
panic!(
"Encountered unablanced parentheses {} vs. {}",
open_count, close_count
);
}
fn extract_number(input: &str) -> String {
input.chars().take_while(|c| c.is_ascii_digit()).collect()
}
fn eval_expression(input: &str) -> u64 {
let mut clean: String = input.chars().filter(|c| *c != ' ').collect();
let mut res = 0;
let mut op = '^';
while clean != "" {
let c = clean.chars().nth(0).unwrap();
if c.is_ascii_digit() {
let substr = extract_number(&clean);
clean = clean[substr.len()..].to_string();
let num: u64 = substr.parse().unwrap();
match op {
'^' => res = num,
'+' => res += num,
'*' => res *= num,
_ => panic!("Unsupported Op: {}", op),
}
} else if c == '+' || c == '*' {
op = c;
clean = clean[1..].to_string();
} else if c == '(' {
let substr = extract_paren_expression(&clean);
clean = clean[substr.len() + 2..].to_string();
let num = eval_expression(&substr);
match op {
'^' => res = num,
'+' => res += num,
'*' => res *= num,
_ => panic!("Unsupported Op: {}", op),
}
}
}
res
}
fn main() -> Result<(), Box<dyn Error>> {
let file = File::open("inputs/day18.txt")?;
let lines = io::BufReader::new(file).lines().map(|l| l.unwrap());
let res = lines.map(|l| eval_expression(&l)).fold(0, |x, y| x + y);
println!("Answer: {}", res);
Ok(())
}
#[cfg(test)]
mod tests {
use crate::*;
#[test]
fn test_extractor() {
assert_eq!(
extract_paren_expression("((2 + 4 * 9) * (6 + 9 * 8 + 6) + 6) + 2 + 4 * 2"),
"(2 + 4 * 9) * (6 + 9 * 8 + 6) + 6"
);
}
#[test]
fn test_basics() {
assert_eq!(eval_expression("23"), 23);
assert_eq!(eval_expression("2 + 3 * 4"), 20);
assert_eq!(eval_expression("2 + (3 * 4)"), 14);
}
#[test]
fn test_problems() {
assert_eq!(eval_expression("2 * 3 + (4 * 5)"), 26);
assert_eq!(eval_expression("5 + (8 * 3 + 9 + 3 * 4 * 3)"), 437);
assert_eq!(
eval_expression("5 * 9 * (7 * 3 * 3 + 9 * 3 + (8 + 6 * 4))"),
12240
);
assert_eq!(
eval_expression("((2 + 4 * 9) * (6 + 9 * 8 + 6) + 6) + 2 + 4 * 2"),
13632
);
}
}