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  1. class Main {
  2.   public static void main(String[] args) {
  3.  
  4.     int N = 1000;
  5.     int result = sum(3, N-1) + sum(5, N-1) - sum(15, N-1);
  6.  
  7.     System.out.println(result);
  8.   }
  9.  
  10.   public static int sum(int n, int N) {
  11.       return n * (N/n) * (N/n + 1)/2;
  12.   }
  13. }
Success #stdin #stdout 0.05s 4386816KB
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https://ideone.com/vwRTH0
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
secret

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