new certain change

C Programs/C Programs 13/Cards.cpp

@@ -1,35 +1,45 @@
-#include <cstdio>
+#include <iostream>
 #include <vector>
 #include <algorithm>
 
-#define all(v) (v).begin(), (v).end()
 using namespace std;
 
 int main()
 {
-    int no_of_people;
-    scanf("%d", &no_of_people);
+    int n;
+    cin >> n;
 
-    vector < pair <int, int> > cards;
-    for(int i = 1; i <= no_of_people; i++)
+    vector<pair<int, int>> players;
+
+    for (int i = 1; i <= n; i++)
     {
-        int card_i;
-        scanf("%d", &card_i);
-        cards.push_back(make_pair(card_i, i));
+        int value;
+        cin >> value;
+
+        players.push_back({value, i});
     }
 
-    sort(all(cards));
-    vector < pair <int, int> > dealt_cards;
-    for(int front_i = 0, back_i = no_of_people - 1; front_i < back_i; front_i++, back_i--)
+    sort(players.begin(), players.end());
+
+    vector<pair<int, int>> answer;
+
+    int left = 0;
+    int right = n - 1;
+
+    while (left < right)
     {
-        int front_index = cards[front_i].second;
-        int back_index = cards[back_i].second;
+        answer.push_back(
+            {players[left].second, players[right].second}
+        );
 
-        dealt_cards.push_back(make_pair(front_index, back_index));
+        left++;
+        right--;
     }
 
-    for(unsigned int i = 0; i < dealt_cards.size(); i++)
-        printf("%d %d\n", dealt_cards[i].first, dealt_cards[i].second);
+    for (auto &p : answer)
+    {
+        cout << p.first << " " << p.second << endl;
+    }
 
     return 0;
 }