From 1e38aeed2565578b98bbb60b6a4d46ad0739d915 Mon Sep 17 00:00:00 2001 From: cos Date: Wed, 11 Dec 2019 20:06:57 +0100 Subject: Add part 1 of day25, 2015 --- 2015/rust/day25/Cargo.toml | 7 +++++++ 2015/rust/day25/src/main.rs | 21 +++++++++++++++++++++ 2 files changed, 28 insertions(+) create mode 100644 2015/rust/day25/Cargo.toml create mode 100644 2015/rust/day25/src/main.rs (limited to '2015/rust/day25') diff --git a/2015/rust/day25/Cargo.toml b/2015/rust/day25/Cargo.toml new file mode 100644 index 0000000..304ab5f --- /dev/null +++ b/2015/rust/day25/Cargo.toml @@ -0,0 +1,7 @@ +[package] +name = "day25" +version = "0.1.0" +authors = ["cos "] +edition = "2018" + +[dependencies] diff --git a/2015/rust/day25/src/main.rs b/2015/rust/day25/src/main.rs new file mode 100644 index 0000000..655c132 --- /dev/null +++ b/2015/rust/day25/src/main.rs @@ -0,0 +1,21 @@ +fn main() { + let start:u128 = 20151125; + let factor:u128 = 252533; + let div:u128 = 33554393; + + let mut val:u128 = start; + + let mut x = 1; + let mut y = 2; + loop { + val = val * factor % div; + if y == 2947 && x == 3029 { break; } + x += 1; + y -= 1; + if y == 0 { + y = x; + x = 1; + } + } + println!("Row: {} Column: {} Code: {}", y, x, val); +} -- cgit v1.2.3