统计素数并求和：Java保温

import java.util.Scanner;

public class Main {
    private static int prime(int a){
        int i;
        for (i=2;i<=a;i++){
            if(a%i==0){
                break;
            }
        }
        if(i==a){
            return 1;
        }else {
            return 0;
        }
    }
    public static void main(String[] args) {
        int M,N;
        int cnt = 0,sum = 0;
        Scanner scanner = new Scanner(System.in);
        M = scanner.nextInt();
        N = scanner.nextInt();
        for (int i = M; i <= N; i++) {
            if (prime(i) == 1){
                cnt++;
                sum += i;
            }
        }
        System.out.println(cnt+" "+sum);
    }
}