@@ -0,0 +1,39 @@
+package backjoon;
+// https://www.acmicpc.net/problem/2231
+// 분해합
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+
+public class _2231 {
+  public static void main(String[] args) throws IOException {
+    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+    // memory 11484 runtime 88
+    int N = Integer.parseInt(br.readLine());
+    int min = 0;
+
+    for(int i = 0; i < N; i++) {
+      int number = i;
+      int sum = 0;	// 각 자릿수 합 변수
+
+      while(number != 0) {
+//        System.out.println("number: "+number+" , "+number%10 +" , "+number/10 + ", sum: "+sum);
+        sum += number % 10;	// 각 자릿수 더하기
+        number /= 10;
+      }
+
+      if(sum + i == N) {
+        min = i;
+        break;
+      }
+    }
+    System.out.println(min);
+  }
+}
+/*
+input
+216
+
+output
+198
+ */