algorithms
백준 (BOJ)
[BOJ]백준 2581번: 소수 (baekjoon 2581)
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2581번: 소수
코드
import java.io.*;
public class B2581 {
static int M, N, min = 10001, sum = 0;
static boolean isPrime;
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
M = Integer.parseInt(br.readLine());
N = Integer.parseInt(br.readLine());
for (int i = M; i <= N; i++) {
isPrime = (i != 1);
for (int j = 2; j <= Math.sqrt(i); j++) {
if (i % j == 0) {
isPrime = false; break;
}
}
if (isPrime) {
sum += i;
min = Math.min(min, i);
}
}
if (sum == 0 || min == 10001) {
bw.write("-1\n");
}else {
bw.write(sum + "\n" + min + "\n");
}
bw.flush();bw.close();
}
}