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21-Algorithm-Party
java_algo
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BOJ_3040.java
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//BOJ_3040
import java.io.*;
import java.util.*;
public class White_Snow {
static int N = 9 ;
static int N2 = 7;
static int[] arr = new int[N];
static int[] arr2 = new int[N2];
static boolean[] isSelected ;
static StringBuilder sb =new StringBuilder();
public static void main(String[] args)throws Exception{
//System.setIn(new FileInputStream("res/White_Snow_input.txt"));
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
for(int i = 0 ; i < N ; i++) {
arr[i] = Integer.parseInt(br.readLine());
}
comb(0,0);
System.out.print(sb.toString());
br.close();
}
private static void comb(int cnt,int start){
if(cnt == N2) { // 카운트가 7일 경우 안에있는 원소들의 합을 구한다.
int sum = 0; // 원소들의 합 sum
for(int i = 0 ; i < arr2.length ; i++) { // 0 ~ 6 까지 7개의 원소의 합을 sum 에 넣음
sum += arr2[i];
}if(sum == 100) { // sum이 100일 경우.
for(int i = 0;i < arr2.length ; i++) {
//System.out.println(arr2[i]); // sum == 100 을 만족하는 원소들을 출력.
sb.append(arr2[i]).append("\n"); // stringbuilder에 원소들을 넣음.
}
}
return;
}
for(int i = start ; i<arr.length ; i++) { //재귀 호출.
arr2[cnt] = arr[i];
comb(cnt+1,i+1);
}
}
}
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