first commit

J01026 - SỐ CHÍNH PHƯƠNG.java

@@ -0,0 +1,19 @@
+
+import java.util.Scanner;
+public class Main {
+
+    static String cp(int n){
+        int x=(int)Math.sqrt((double)n);
+        return x*x==n?"YES":"NO";
+    }
+
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+        int t=sc.nextInt();
+        for(int i=0;i<t;i++){
+            int s=sc.nextInt();
+            System.out.println(cp(s));
+        }
+        sc.close();
+    }
+}