diff --git a/dseki/paiza/src/C056.java b/dseki/paiza/src/C056.java
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index 0000000000000000000000000000000000000000..6e13802e18d487f138acf1550899406c75ead8dd
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+++ b/dseki/paiza/src/C056.java
@@ -0,0 +1,65 @@
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Scanner;
+
+/**
+ * テストの採点.
+ */
+public class C056 {
+  private final int students;  // 生徒の数
+  private final int passingGrade;  // 合格点
+  private final int POINT_DEDUCTION_FOR_ABSENCE = 5;  // １回の欠席につき減点する点数
+  
+  private C056(final int students, final int passingGrade) {
+    this.students = students;
+    this.passingGrade = passingGrade;
+  }
+  
+  /**
+   * メインメソッド.
+   */
+  public static void main(final String[] args) {
+    final Scanner sc = new Scanner(System.in);
+    new C056(sc.nextInt(), sc.nextInt()).outputStudentNoPassingScore(sc);
+    sc.close();
+  }
+  
+  // 合格点以上の成績の学籍番号を返すメソッド
+  private void outputStudentNoPassingScore(final Scanner sc) {
+    for (final int outputStudentNo : studentNumberPassingScore(sc)) {
+      System.out.println(outputStudentNo);
+    }
+  }
+  
+  // 合格点以上の成績の学生番号リストを作るメソッド
+  private ArrayList<Integer> studentNumberPassingScore(final Scanner sc) {
+    final ArrayList<Integer> successfulCandidateList = new ArrayList<Integer>();  // 合格者を格納するリスト
+    final Map<Integer, Integer> mapOfStudentGrades = mapOfStudentGrades(sc);  // メソッドを呼び出して格納
+    // 生徒の数だけ繰り返す
+    for (int i = 1; i <= this.students; i++) {
+      if (mapOfStudentGrades.get(i) >= passingGrade) {
+        successfulCandidateList.add(i);
+      }
+    }
+    return successfulCandidateList;
+  }
+  
+  // 生徒の学籍番号と成績をマップに格納するメソッド
+  private Map<Integer, Integer> mapOfStudentGrades(final Scanner sc) {
+    final Map<Integer, Integer> studentGradesMap = new HashMap<>();
+    for (int i = 1; i <= this.students; i++) {
+      studentGradesMap.put(i, calculateGrade(sc));
+    }
+    return studentGradesMap;
+  }
+  
+  // 生徒の成績を計算するメソッド
+  private int calculateGrade(final Scanner sc) {
+    int grade = sc.nextInt() - (sc.nextInt() * POINT_DEDUCTION_FOR_ABSENCE);
+    if (grade < 0) {
+      grade = 0;
+    }
+    return grade;
+  }
+}
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