이예진: [BOJ] 15831 준표의 조약돌_241122

Author: yeahdy

BOJ/15001-20000번/YJ_15831.java

@@ -0,0 +1,42 @@
+import java.io.*;
+import java.util.*;
+
+public class YJ_15831 {
+    public static void main(String[] args) throws IOException {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        StringTokenizer st = new StringTokenizer(br.readLine());
+        int N = Integer.parseInt(st.nextToken());
+        int B = Integer.parseInt(st.nextToken());
+        int W = Integer.parseInt(st.nextToken());
+        String[] road = br.readLine().split("");
+
+        int result = 0;
+        int bCount = 0;
+        int wCount = 0;
+        int start = 0;
+        int end = 0;
+        while(end < N){
+            if(bCount > B){       //b 갯수를 초과한 경우 start 움직이기
+                if("W".equals(road[start])){
+                    --wCount;
+                }else{
+                    --bCount;
+                }
+                start++;
+            } else {      //b 갯수보다 작거나 같은 경우 end 움직이기
+                if("W".equals(road[end])){
+                    wCount++;
+                }else{
+                    bCount++;
+                }
+                end++;
+            }
+
+            if(wCount >= W && bCount <= B) { //조건이 부합하는 경우 산책길 길이 갱신
+                result = Math.max(result, end - start);
+            }
+        }
+
+        System.out.println(result);
+    }
+}