some programs!

cs101/dh_20260923_01_bike_or_walk.cpp

@@ -0,0 +1,29 @@
+#include <iostream>
+
+double get_bike_time(double distance) {
+    return 27 + 23 + distance / 3;
+}
+
+double get_walk_time(double distance) {
+    return distance * 5 / 6;
+}
+
+int main() {
+    std::ios::sync_with_stdio(false);
+    std::cin.tie(nullptr);
+
+    int distance;
+    std::cin >> distance;
+    while (std::cin >> distance) {
+        double diff = get_bike_time(distance) - get_walk_time(distance);
+        if (diff < 1e-8 && diff > -1e-8) {
+            std::cout << "All" << std::endl;
+        } else if (diff < 0) {
+            std::cout << "Bike" << std::endl;
+        } else {
+            std::cout << "Walk" << std::endl;
+        }
+    }
+
+    return 0;
+}