CT_322

BOJ/Java/src/B1/Boj_26148_세로달력.java

@@ -0,0 +1,54 @@
+package B1;
+
+import java.io.*;
+
+public class Boj_26148_세로달력 {
+    private static int sum;
+
+    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 dow = Integer.parseInt(br.readLine()) - 1;
+        sum = 0;
+
+        for (int month = 1; month <= 12; month++) {
+            switch (month) {
+                case 1:
+                case 3:
+                case 5:
+                case 7:
+                case 8:
+                case 10:
+                case 12:
+                    dow = cntColCal(dow, 31);
+                    break;
+                case 4:
+                case 6:
+                case 9:
+                case 11:
+                    dow = cntColCal(dow, 30);
+                    break;
+                case 2:
+                    if ((N % 4 == 0 && N % 100 != 0) || N % 400 == 0) { // 윤년
+                        dow = cntColCal(dow, 29);
+                    } else {
+                        dow = cntColCal(dow, 28);
+                    }
+                    break;
+            }
+        }
+
+        bw.write(Integer.toString(sum));
+        bw.flush();
+    }
+
+    private static int cntColCal(int startDow, int days) {
+        int lastWeekDays = (days - (7 - startDow)) % 21;
+
+        sum += Math.max(0, lastWeekDays - startDow);
+
+        return lastWeekDays % 7;
+    }
+}