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2022-12-15 23:51:04 +07:00
commit 87d51fb251
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+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Main.java to edit this template
+ */
+package pkg17.danh_dau_chu_cai;
+
+import java.util.HashSet;
+import java.util.Scanner;
+import java.util.Set;
+
+/**
+ *
+ * @author GIGABYTE
+ */
+public class Danh_dau_chu_cai {
+
+    /**
+     * @param args the command line arguments
+     */
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+        
+           
+            String s = sc.nextLine();
+            Set<String> st = new HashSet<>();
+            for(int i=0;i<s.length();i++){
+                String temp = s.charAt(i)+" ";
+                st.add(temp);
+            }
+            System.out.println(st.size());
+        
+    }
+    
+}