From 49d6fdff9d31961d80ca2e41204683b4e460b1a2 Mon Sep 17 00:00:00 2001
From: jbb01 <32650546+jbb01@users.noreply.github.com>
Date: Sat, 13 Sep 2025 00:12:17 +0200
Subject: [PATCH] fully automate 08_revisit_everything

---
 src/bin/main.rs                             | 40 ++++++++++-----------
 src/lib/challenges/c8_revisit_everything.rs | 27 ++++++++++++++
 src/lib/challenges/mod.rs                   |  3 +-
 3 files changed, 49 insertions(+), 21 deletions(-)
 create mode 100644 src/lib/challenges/c8_revisit_everything.rs

diff --git a/src/bin/main.rs b/src/bin/main.rs
index 1f6fe7b..e694803 100644
--- a/src/bin/main.rs
+++ b/src/bin/main.rs
@@ -1,40 +1,40 @@
-use rug::Integer;
 use lib::submit_with_name;
 
 fn main() {
-    let mut name0 = String::from("ZetaX");
+    let mut name = String::from("Jonah");
     loop {
-        let name: &str = &name0;
+        let name_temp: &str = &name;
 
         let (n, x) = lib::challenges::c1_welcome::solve();
-        println!("n = {:?}\nx = {:?}\n{:?}\n", n, x, submit_with_name(name, n, x));
+        println!("n = {:?}\nx = {:?}\n{:?}\n", n, x, submit_with_name(name_temp, n, x));
 
-        let (n, x) = lib::challenges::c2_these_numbers_are_big::solve(name);
-        println!("n = {:?}\nx = {:?}\n{:?}\n", n, x, submit_with_name(name, n, x.clone()));
+        let (n, x) = lib::challenges::c2_these_numbers_are_big::solve(name_temp);
+        println!("n = {:?}\nx = {:?}\n{:?}\n", n, x, submit_with_name(name_temp, n, x.clone()));
 
         let (n, x) = lib::challenges::c3_are_you_still_doing_this_by_hand::solve(n, x);
-        println!("n = {:?}\nx = {:?}\n{:?}\n", n, x, submit_with_name(name, n, x.clone()));
+        println!("n = {:?}\nx = {:?}\n{:?}\n", n, x, submit_with_name(name_temp, n, x.clone()));
 
         let (n, x) = lib::challenges::c4_broken_proof_of_work::solve(n, x);
-        println!("n = {:?}\nx = {:?}\n{:?}\n", n, x, submit_with_name(name, n, x.clone()));
+        println!("n = {:?}\nx = {:?}\n{:?}\n", n, x, submit_with_name(name_temp, n, x.clone()));
 
         let (n, x) = lib::challenges::c5_what_the_bf::solve(n, x);
-        println!("n = {:?}\nx = {:?}\n{:?}\n", n, x, submit_with_name(name, n, x.clone()));
+        println!("n = {:?}\nx = {:?}\n{:?}\n", n, x, submit_with_name(name_temp, n, x.clone()));
 
         let (n, x) = lib::challenges::c6_automation_is_not_enough::solve(n, x);
-        println!("n = {:?}\nx = {:?}\n{:?}\n", n, x, submit_with_name(name, n, x.clone()));
+        println!("n = {:?}\nx = {:?}\n{:?}\n", n, x, submit_with_name(name_temp, n, x.clone()));
 
         let (n, x) = lib::challenges::c7_weird_assembly_machine::solve(n, x);
-        println!("n = {:?}\nx = {:?}\n{:?}\n", n, x, submit_with_name(name, n, x.clone()));
+        println!("n = {:?}\nx = {:?}\n{:?}\n", n, x, submit_with_name(name_temp, n, x.clone()));
 
-        let truth = Integer::from(42);
-        let w: usize = x.clone().modulo(&truth).try_into().unwrap();
-        println!("n = {n:?}\nx = {x:?}\nw = {w:?}\nname={name}");
-
-        if w == 30 {
-            break;
-        }
-
-        name0.insert_str(0, " ");
+        let (n, x) = match lib::challenges::c8_revisit_everything::solve(n, x) {
+            Ok(res) => res,
+            Err(w) => {
+                println!("name = \"{name}\"\nw = {w}\n");
+                name.insert_str(0, " ");
+                continue;
+            }
+        };
+        println!("n = {n:?}\nx = {x:?}\nname = \"{name}\"\n{:?}\n", submit_with_name(name_temp, n, x.clone()));
+        break;
     }
 }
\ No newline at end of file
diff --git a/src/lib/challenges/c8_revisit_everything.rs b/src/lib/challenges/c8_revisit_everything.rs
new file mode 100644
index 0000000..558ac32
--- /dev/null
+++ b/src/lib/challenges/c8_revisit_everything.rs
@@ -0,0 +1,27 @@
+use rug::ops::DivRounding;
+use rug::Integer;
+use std::str::FromStr;
+
+const PHI: &str = "4556683258594822402855414380362620295231673046713752880933967889771646856051745784462468117575177892006513392693685616565666555545842363207724851343853529903674824524238732001458342230627654145983386115997227846421784693186847971068054052064";
+const M: &str = "4556683258594822402855414380362620295231673046713752880933967889771646856051745784462468117575177892006513392693685616569935833357648393898915677206732580748330214938398411668157941515847730087263301030154072458063812554524260405671629754999";
+const E: u64 = 65537;
+const LIMIT: u128 = 100_000_000_000_000_000_000;
+
+pub fn solve(n: u64, x: Integer) -> Result<(u128, Integer), u32> {
+    let truth = Integer::from(42);
+    let phi = Integer::from_str(PHI).unwrap();
+    let m = Integer::from_str(M).unwrap();
+
+    let k = Integer::from(LIMIT - n as u128) * 100;
+    let e = Integer::from(E).pow_mod(&k, &phi).unwrap();
+    let w: u32 = x.clone().modulo(&truth).try_into().unwrap();
+    if w != 30 {
+        return Err(w);
+    }
+
+    let mut y = x.clone().div_floor(&truth);
+    y = y.pow_mod(&e, &m).unwrap();
+
+    let x: Integer = y * 42 + w;
+    Ok((LIMIT, x))
+}
\ No newline at end of file
diff --git a/src/lib/challenges/mod.rs b/src/lib/challenges/mod.rs
index 316df95..916cf5a 100644
--- a/src/lib/challenges/mod.rs
+++ b/src/lib/challenges/mod.rs
@@ -4,4 +4,5 @@ pub mod c3_are_you_still_doing_this_by_hand;
 pub mod c4_broken_proof_of_work;
 pub mod c5_what_the_bf;
 pub mod c6_automation_is_not_enough;
-pub mod c7_weird_assembly_machine;
\ No newline at end of file
+pub mod c7_weird_assembly_machine;
+pub mod c8_revisit_everything;
\ No newline at end of file