Osajono

input/code.cpp: In function 'int main(int, char**)':
input/code.cpp:17:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < str.length(); i++){
                    ^

#include <stdio.h>
#include <iostream>
#include <string>
#include <algorithm>

#define RANGE 26

using namespace std;

int main(int argc, char* argv[])
{
	ios_base::sync_with_stdio(0);
	string str;
	long c = 0;
	int t[RANGE] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
	cin >> str;
	for (int i = 0; i < str.length(); i++){
		t[str[i] - 'A']++;
		c += t[str[i] - 'A'];
	}
	cout << c;
	return 0;
}

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 1

Verdict: ACCEPTED

Test 3

Group: 1

Verdict: ACCEPTED

Test 4

Group: 1

Verdict: ACCEPTED

Test 5

Group: 1

Verdict: ACCEPTED

Test 6

Group: 2

Verdict: ACCEPTED

Test 7

Group: 2

Verdict: ACCEPTED

Test 8

Group: 2

Verdict: ACCEPTED

Test 9

Group: 2

Verdict: ACCEPTED

Test 10

Group: 2

Verdict: ACCEPTED

Test 11

Group: 3

Verdict: ACCEPTED

Test 12

Group: 3

Verdict: ACCEPTED

Test 13

Group: 3

Verdict: ACCEPTED

Test 14

Group: 3

Verdict: ACCEPTED

Test 15

Group: 3

Verdict: ACCEPTED