Osajono

input/code.cpp: In function 'int main()':
input/code.cpp:13:10: warning: unused variable 'COUNTS' [-Wunused-variable]
     byte COUNTS[26] = {0};
          ^

#include <iostream>
#include <string>
typedef long long ll;
typedef unsigned char byte;
int main() {
    std::string x;
    std::cin >> x;
    ll len = x.length();
    if (len==0) {
        std::cout << 0 << std::endl;
    }
    ll sum = 0;
    byte COUNTS[26] = {0};
    // let teh complier optimize :#
    for (long w = 0; w < len; ++w) {
        ll psum = 0;
        for (long q = len; q>=w; --q) {
            if (x[w]==x[q]){++psum;};
        }
        sum+=psum;
    }
    std::cout << sum << std::endl;

    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: TIME LIMIT EXCEEDED

Test 12

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 13

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 14

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 15

Group: 3

Verdict: TIME LIMIT EXCEEDED