11723 solved

11723.cpp

@@ -0,0 +1,33 @@
+#include <iostream>
+using namespace std;
+
+int main(void) {
+  int r, n;
+  int counter;
+  int result;
+
+  while (cin >> r >> n) {
+    if (r == 0 && n == 0)
+      break;
+
+    counter++;
+
+    cout << "Case " << counter << ": ";
+
+    if (n >= r)
+      result = 0;
+    else if (n * 27 >= r) {
+      result = (r - n) / n;
+      if ((r-n)%n > 0)
+        result += 1;
+    } else
+      result = -1;
+
+    if (result == -1)
+      cout << "impossible" << endl;
+    else
+      cout << result << endl;
+  }
+
+  return 0;
+}