dash

bottle.cpp

@@ -0,0 +1,19 @@
+#include <iostream>
+using namespace std;
+
+int main() {
+    int numBottles, numExchange;
+    cin >> numBottles >> numExchange;
+
+    int total = numBottles;
+    int empty = numBottles;
+
+    while (empty >= numExchange) {
+        int newBottles = empty / numExchange;
+        total += newBottles;
+        empty = (empty % numExchange) + newBottles;
+    }
+
+    cout << total << endl;  
+    return 0;
+}

dash.cpp

@@ -0,0 +1,38 @@
+#include <bits/stdc++.h>
+using namespace std;
+
+int main() {
+    string s = "5F3Z-2e-9-w"; // input string
+    int k = 4;                // group size
+
+    string temp = "";
+
+    // 1. Remove dashes and convert to uppercase
+    for (char c : s) {
+        if (c != '-') {
+            temp += toupper(c);
+        }
+    }
+
+    // 2. Build result from the end
+    string result = "";
+    int count = 0;
+
+    for (int i = temp.size() - 1; i >= 0; i--) {
+        result.push_back(temp[i]);
+        count++;
+
+        if (count == k && i != 0) {
+            result.push_back('-');
+            count = 0;
+        }
+    }
+
+    // 3. Reverse the result string
+    reverse(result.begin(), result.end());
+
+    // 4. Print final output
+    cout << result << endl;
+
+    return 0;
+}