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Q2581.java
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Q2581.java
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package forRank;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.Arrays;
public class Q2581 {
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
int M = Integer.parseInt(br.readLine());
int N = Integer.parseInt(br.readLine());
boolean isPrime[] = new boolean[N + 1];
int min = -1;
int sum = 0;
Arrays.fill(isPrime, true);
isPrime[1] = false;
for (int i = 2; i * i < N; i++) {
for (int j = i * 2; j <= N; j += i) {
isPrime[j] = false;
}
}
for (int i = M; i <= N; i++) {
if(isPrime[i]){
if(min == -1)
min = i;
sum += i;
}
}
if(min == -1)
bw.write("-1\n");
else
bw.write(String.format("%d\n%d\n", sum, min));
br.close();
bw.close();
}
}