#11659 구간 합 구하기
import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.util.StringTokenizer; public class P11659 { public static void main(String[] args) throws IOException { BufferedReader bf = new BufferedReader(new InputStreamReader(System.in)); //입력을 빨리 받기 StringTokenizer st = new StringTokenizer(bf.readLine()); //문자열 파싱 int n = Integer.parseInt(st.nextToken..