[java 백준] 실버 5/1292번 쉽게 푸는 문제

[java 백준] 실버 5/1292번 쉽게 푸는 문제

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import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.util.ArrayList; import java.util.StringTokenizer; public class Main { public static void main( String [] args) throws NumberFormatException, IOException { BufferedReader br = new BufferedReader( new InputStreamReader( System . in )); StringTokenizer st = new StringTokenizer(br.readLine()); int a = Integer. parseInt (st.nextToken()); int b = Integer. parseInt (st.nextToken()); int total = 0 ; ArrayList < Integer > arr = new ArrayList < Integer > (); int i = 1 ; while (i < = 1000 ) { for ( int j = 1 ; j < = i; j + + ) { arr. add (i); } i + + ; } for ( int i1 = a - 1 ; i1 < b; i1 + + ) { total + = arr.get(i1); } System . out . println (total); } } Colored by Color Scripter

from http://we1cometomeanings.tistory.com/151 by ccl(A) rewrite - 2021-09-20 00:01:23