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  1. #include <iostream>
  2. #include <iomanip>
  3. using namespace std;
  4.  
  5. int main() {
  6. int n;
  7. cin >> n;
  8.  
  9. double a, sum = 0;
  10.  
  11. for (int i = 0; i < n; i++) {
  12. cin >> a;
  13. sum += a;
  14. }
  15.  
  16. cout << fixed << setprecision(1) << sum;
  17.  
  18. return 0;
  19. }
Success #stdin #stdout 0s 5348KB
stdin
5
1.2 1.3 5.7 1.8 12.4
stdout
22.4