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  1. #include <iostream>
  2. using namespace std;
  3. int main() {
  4.     int n, sumEvenNo = 0, sumOddNo = 0;
  5.     cin >> n;
  6.     for (int i = 1; i <= n; ++i) {
  7.         int num;
  8.         cin >> num;
  9.         if (i % 2 == 0) {
  10.             sumEvenNo += num;
  11.         } else {
  12.             sumOddNo += num;
  13.         }
  14.     }
  15.     cout << sumEvenNo - sumOddNo;
  16.     return 0;
  17. }
Success #stdin #stdout 0.01s 5284KB
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https://ideone.com/ced6OT
language:
C++ (gcc 8.3)
created:
2 days ago
visibility:
public

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