36 lines
1.0 KiB
Rust
36 lines
1.0 KiB
Rust
fn main() {
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// let mut file = std::fs::File::open("input1").unwrap();
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// let mut contents = String::new();
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// file.read_to_string(&mut contents).unwrap();
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let mut v: Vec<i32> = Vec::new();
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let contents = std::fs::read_to_string("input1").unwrap();
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for s in contents.lines() {
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v.push(s.parse::<i32>().unwrap());
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}
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v.sort();
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for n in v.iter() {
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let k = 2020 - n;
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if v.contains(&k) {
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print!("{} + {} = {}\n", n, k, n + k);
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print!("{} * {} = {}\n", n, k, n * k);
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break;
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}
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}
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let mut found = false;
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for n in v.iter() {
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for n2 in v.iter() {
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let k = 2020 - n - n2;
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if v.contains(&n) && v.contains(n2) && v.contains(&k) {
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print!("{} + {} + {} = {}\n", n, n2, k, n + n2 + k);
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print!("{} * {} * {} = {}\n", n, n2, k, n * n2 * k);
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found = true;
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break;
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}
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}
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if found {
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break;
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}
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}
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}
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