Osajono

input/Test.java:12: error: incompatible types: possible lossy conversion from long to int
            num[ccnum] = num[ccnum] + 1;            
                ^
input/Test.java:12: error: incompatible types: possible lossy conversion from long to int
            num[ccnum] = num[ccnum] + 1;            
                             ^
2 errors

import java.util.Scanner;
public class Test {
    public static void main(String[] args) {
        Scanner inp = new Scanner(System.in);
        String test = inp.nextLine();
        long[] num;
        num = new long[26];
        char[] testa = test.toCharArray();
        for(char t : testa){
            long cnum = (long) t;
            long ccnum = cnum - 65;
            num[ccnum] = num[ccnum] + 1;            
        }
        long ans = 0;
        for(long n : num){
            ans = ans + ((n * (n + 1))/2);
        }
        System.out.println(ans);
        
        
        }
    }