Index: aoc2024.c
==================================================================
--- aoc2024.c
+++ aoc2024.c
@@ -52,26 +52,26 @@
 }
 
 /* === aoc202407 =======================================================
    Part one looks easy
    Part two also easy
-   ===================================================================== */
+ ===================================================================== */
 
 static unsigned long long concat(unsigned long long a, unsigned long long b) {
-        unsigned long long r = a, t = b;
-        while (b) {
-                r *= 10;
-                b /= 10;
-        }
-        return r + t;
+    unsigned long long r = a, t = b;
+    while (b) {
+        r *= 10;
+        b /= 10;
+    }
+    return r + t;
 }
 
 static int operatorsrequired(unsigned long long v, unsigned long long *a, size_t n, int minop) {
-        // assumes no unsigned long long overflowing
-        if (n == 1) {
-                if (v == *a) return minop;
-                return 0;
+    // assumes no unsigned long long overflowing
+    if (n == 1) {
+        if (v == *a) return minop;
+        return 0;
     }
     unsigned long long tmp = a[1];
     int pplus, pmult, pconcat = 0;
     a[1] = a[0] + tmp;
     pplus = operatorsrequired(v, a+1, n-1, 2);