cleanup

S1/GdCP/aoc22.c

@@ -0,0 +1,60 @@
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+void mix(long *n, long r) { *n = *n ^ r; }
+void prune(long *n) { *n = *n % 16777216; }
+
+int main() {
+  FILE *file = fopen("22.in", "r");
+  if (!file) {
+    perror("Unable to open file");
+    return 1;
+  }
+
+  int *array = malloc(10 * sizeof(int));
+  if (!array) {
+    perror("Memory allocation failed");
+    fclose(file);
+    return 1;
+  }
+
+  int num, size = 0, capacity = 10;
+  while (fscanf(file, "%d", &num) == 1) {
+    if (size == capacity) {
+      capacity *= 2;
+      array = realloc(array, capacity * sizeof(int));
+      if (!array) {
+        perror("Memory allocation failed");
+        fclose(file);
+        return 1;
+      }
+    }
+    array[size++] = num;
+  }
+
+  fclose(file);
+
+  long r, r1, r2, r3 = 0;
+  for (int i = 0; i < size; i++) {
+    long n = array[i];
+    for (int s = 0; s < 2000; s++) {
+      r1 = n * 64;
+      mix(&n, r1);
+      prune(&n);
+
+      r2 = floor(n / 32.0);
+      mix(&n, r2);
+      prune(&n);
+
+      r3 = n * 2048;
+      mix(&n, r3);
+      prune(&n);
+    }
+    r += n;
+  }
+  printf("%li\n", r);
+
+  free(array);
+  return 0;
+}