correctly label euler solutions

examples/puzzles/euler_14.zr

@@ -1,7 +1,22 @@
+func collatz_num[n: i64] : i64
+    if n % 2 == 0
+        return n / 2
+    return n * 3 + 1
+
+func collatz_seq[n: i64]: i64
+    let i: i64 = 1
+    while n != 1
+        n = collatz_num(n)
+        i = i + 1
+    return i
+
 func main[] : i64
-    for a in 1..1000
-        for b in 1..1000
-            let c: i64 = 1000 - b - a
-            if a * a + b * b == c * c
-                io.println_i64(a * b * c)
-                return 0
+    let max: i64 = 0
+    let max_index: i64 = 0
+
+    for i in 1..1000000
+        let seq: i64 = collatz_seq(i)
+        if seq > max
+            max = seq
+            max_index = i
+    io.println_i64(max_index)