package com.examplehub.projecteuler;

/** https://projecteuler.net/problem=1 */
public class Problem01 {

  public static int solution1(int n) {
    int sum = 0;
    for (int i = 1; i < n; ++i) {
      if (i % 3 == 0 || i % 5 == 0) {
        sum += i;
      }
    }
    return sum;
  }
}