37 lines
1.2 KiB
Rust
37 lines
1.2 KiB
Rust
/* https://adventofcode.com/2019/day/1 (part 2)*/
|
|
|
|
fn recurse(mass: i32) -> i32 {
|
|
let fuel: i32 = mass / 3 - 2;
|
|
if fuel < 0 {
|
|
return 0
|
|
}
|
|
fuel + recurse(fuel)
|
|
}
|
|
|
|
fn main() {
|
|
// 100 elements
|
|
let arr: [i32; 100] = [
|
|
95249, 126697, 77237, 80994, 91186, 53823, 115101, 130919, 88127,
|
|
141736, 53882, 67432, 94292, 73223, 139947, 66450, 55710, 128647,
|
|
73874, 57163, 139502, 140285, 119987, 125308, 77561, 74573, 85364,
|
|
92991, 102935, 71259, 99622, 118876, 124482, 148442, 77664, 90453,
|
|
111933, 110449, 74172, 148641, 58574, 135365, 84703, 81077, 65290,
|
|
136749, 127256, 94872, 143534, 81702, 59493, 72365, 69497, 149082,
|
|
79552, 78509, 73759, 147439, 97535, 118952, 114301, 104401, 95080,
|
|
100907, 132914, 136096, 52451, 70544, 120717, 107010, 76840, 51324,
|
|
135258, 73985, 118067, 86602, 95127, 51182, 84838, 60430, 86347,
|
|
140487, 147777, 85143, 114215, 100410, 126504, 69630, 123656, 108886,
|
|
144192, 123620, 147217, 146090, 101966, 80577, 62193, 143331, 79947,
|
|
93518
|
|
];
|
|
|
|
|
|
let mut fuel: i32 = 0;
|
|
|
|
for i in 0..100 {
|
|
fuel += recurse(arr[i]);
|
|
}
|
|
|
|
println!("{}", fuel);
|
|
}
|