Adding medium/hard puzzles & challenges...

puzzles/medium/the-gift.cpp

@@ -0,0 +1,79 @@
+// https://www.codingame.com/ide/puzzle/the-gift
+// Xavier Morel - 2016-03-14
+
+#include <iostream>
+#include <string>
+#include <vector>
+#include <algorithm>
+#include <cstring>
+
+using namespace std;
+
+typedef struct {
+    int number;
+    int budget;
+    int resp;
+} Ood;
+
+/**
+ * Auto-generated code below aims at helping you parse
+ * the standard input according to the problem statement.
+ **/
+int main()
+{
+    int number;
+    cin >> number; cin.ignore();
+    int total_price;
+    cin >> total_price; cin.ignore();
+    int budget[number];
+    int total_sum = 0;
+    cerr << "Price: " << total_price << " for " << number << " people." << endl;
+    for (int i = 0; i < number; i++) {
+        cin >> budget[i]; cin.ignore();
+        total_sum += budget[i];
+        cerr << "Budget " << i << ": " << budget[i] << " (Total: " << total_sum << ")" << endl;
+    }
+
+    if (total_sum < total_price) {
+        cout << "IMPOSSIBLE" << endl;
+        return 0;
+    }
+
+    int res[number];
+    for (int i = 0; i < number; i++) {
+        res[i] = 0;
+    }
+
+    int left = total_price;
+    while (left > 0) {
+        int eq_parts = left / number;
+        if (eq_parts == 0) {
+            eq_parts = 1;
+        }
+        cerr << "Each ood should pay " << eq_parts << " (left: " << left << ")" << endl;
+        for (int i = 0; i < number; i++) {
+            if (left == 0) {
+                break;
+            }
+            if (budget[i] >= eq_parts) {
+                cerr << "Ood " << i << " can pay (budget " << budget[i] << ")" << endl;
+                res[i] += eq_parts;
+                left -= eq_parts;
+                budget[i] -= eq_parts;
+                cerr << "-> Will pay total " << res[i] << " (budget left: " << budget[i] << ")" << endl;
+            } else {
+                cerr << "Ood " << i << " cant pay that much" << endl;
+                res[i] += budget[i];
+                left -= budget[i];
+                budget[i] = 0;
+                cerr << "-> Will pay total " << res[i] << " (budget left: " << budget[i] << ")" << endl;
+            }
+        }
+    }
+
+    sort(res, res + number);
+
+    for (int i = 0; i < number; i++) {
+        cout << res[i] << endl;
+    }
+}