Create 백준-2018-수들의합.java

Author: rhkr8521

2025-08-14/곽태근/백준-2018-수들의합.java

@@ -0,0 +1,36 @@
+import java.io.*;
+import java.util.*;
+
+public class Main{
+
+    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 N = Integer.parseInt(br.readLine());
+
+        int start_idx = 1;
+        int end_idx = 1;
+        int count = 1;
+        int sum = 1;
+
+        while(end_idx != N){
+
+            if(sum == N){
+                count++;
+                end_idx++;
+                sum = sum + end_idx;
+            }else if(sum>N){
+                sum = sum - start_idx;
+                start_idx++;
+            }else{
+                end_idx++;
+                sum = sum + end_idx;
+            }
+        }
+
+        bw.write(count+"");
+        bw.flush();
+    }
+}