BOJ_1072 : 게임

Author: spring0913

week5/BOJ_1072(게임).java

@@ -0,0 +1,32 @@
+import java.io.*;
+import java.util.*;
+
+public class Main {
+
+    public static final int MAX = 1000000000;
+
+    public static void main(String[] args) throws IOException {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        StringTokenizer st = new StringTokenizer(br.readLine());
+        Long X = Long.parseLong(st.nextToken());
+        Long Y = Long.parseLong(st.nextToken());
+        int Z = (int) ((Y * 100) / X);
+        if (Z >= 99) {
+            System.out.println("-1");
+            return;
+        }
+        int left = 1;
+        int right = MAX;
+        int answer = right;
+        while (left <= right) {
+            int mid = (left + right) / 2;
+            if (((Y + mid) * 100 / (X + mid)) > Z) {
+                right = mid - 1;
+                answer = mid;
+            } else {
+                left = mid + 1;
+            }
+        }
+        System.out.println(answer);
+    }
+}