Validate all floors. Huge speed up because fewer variants validate.

2016/11/src/main.rs

@@ -39,14 +39,15 @@ impl Facility {
     }
 
     pub fn validate(&self) -> bool {
+        for f in 0..self.top_floor + 1 {
             let mut generators = HashSet::new();
             let mut microchips = HashSet::new();
 
             for (i, &(g, m)) in self.components.iter().enumerate() {
-            if g == self.elevator {
+                if g == f {
                     generators.insert(i);
                 }
-            if m == self.elevator {
+                if m == f {
                     microchips.insert(i);
                 }
             }
@@ -58,6 +59,7 @@ impl Facility {
                     return false;
                 }
             }
+        }
 
         true
     }