1 files changed, 23 insertions, 0 deletions
diff --git a/056.bc b/056.bc
new file mode 100644
index 0000000..835e6cd
--- /dev/null
+++ b/056.bc
@@ -0,0 +1,23 @@
+#!/usr/bin/bc
+
+define digit_sum (n) {
+    scale = 0
+    sum = 0
+    while (n > 0) {
+        sum += (n % 10)
+        n = n / 10
+    }
+    scale = 20
+    return sum
+}
+
+max = 0
+for (i = 1; i <= 100; i++) {
+    for (j = 1; j <= 100; j++) {
+        s = digit_sum(i^j)
+        if (s > max) {
+            max = s
+        }
+    }
+}
+max