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- import java.util.Scanner;
- public class Product37
- {
- public static void main(String[] args) {
- Scanner stdIn = new Scanner(System.in);
- System.out.print("いくつまでの和を求めますか?:");
- int num = stdIn.nextInt();
- int sum37 = 0;
- int sum21 = 0;
- for(int i=1;i<=num;i++){
- if(i%3 == 0 || i%7 == 0){
- sum37 += i;
- if(i%21 == 0) sum21 += i;
- }
- }
- System.out.println("3の倍数または7の倍数の和:" + sum37 );
- System.out.println("3と7の公倍数の和:" + sum21 );
- }
- }
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