diff --git a/26/01/66.cpp b/26/01/66.cpp
new file mode 100644
index 0000000..214dd13
--- /dev/null
+++ b/26/01/66.cpp
@@ -0,0 +1,19 @@
+#include <vector>
+
+class Solution {
+public:
+    std::vector<int> plusOne(std::vector<int>& digits) {
+        for(int i = digits.size()-1;i>=0;i--){
+            if(digits[i] == 9){
+                digits[i] = 0;
+                if (i == 0) {
+                    digits.insert(digits.begin(),1);
+                }
+                continue;
+            }
+            digits[i]++;
+            break;
+        }
+        return digits;
+    }
+};
\ No newline at end of file
diff --git a/26/01/go/66.go b/26/01/go/66.go
new file mode 100644
index 0000000..47af5c6
--- /dev/null
+++ b/26/01/go/66.go
@@ -0,0 +1,16 @@
+package A
+
+func plusOne(digits []int) []int {
+	for i := len(digits) - 1; i >= 0; i-- {
+		if digits[i] == 9 {
+			digits[i] = 0
+			if i == 0 {
+				digits = append([]int{1}, digits...)
+			}
+			continue
+		}
+		digits[i]++
+		break
+	}
+	return digits
+}