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JugglingLetters.java
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JugglingLetters.java
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import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Scanner;
public class JugglingLetters {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner sc = new Scanner(System.in);
int t = sc.nextInt();
while (t-- > 0) {
int n = sc.nextInt();
List<String> l = new ArrayList<String>();
int sum = 0;
for (int i = 0; i < n; i++) {
String s = sc.next();
l.add(s);
sum += s.length();
}
if (sum > 1000) System.out.println("NO");
else solve(l, n);
}
}
private static void solve(List<String> l, int n) {
// TODO Auto-generated method stub
Map<Character, Integer> map = new HashMap<Character, Integer>();
for (String s : l) {
for (char c : s.toCharArray()) {
map.put(c, map.getOrDefault(c, 0) + 1);
}
}
for (char c : map.keySet()) {
if (map.get(c) % n != 0) {
System.out.println("NO");
return;
}
}
System.out.println("YES");
}
}