BEAKJOON JAVA ALGORITHM #9095(1,2,3 더하기)

https://www.acmicpc.net/problem/9095

import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; public class a9095 { public static void main(String[] args) throws NumberFormatException, IOException { BufferedReader br=new BufferedReader(new InputStreamReader(System.in)); int num=Integer.parseInt(br.readLine()); int[] tl=new int[11]; tl[0]=1; tl[1]=2; tl[2]=4; for(int i=0;i<num;i++){ int t=Integer.parseInt(br.readLine()); if(t>3){ for(int j=3;j<tl.length;j++){ tl[j]=tl[j-1]+tl[j-2]+tl[j-3]; } } System.out.println(tl[t-1]); } } }