Osajono

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

using namespace std;

int main() {
    char input[100000];
    cin.getline(input, 100000);
    int a = 0;
    int i;
    int j;
    int l = strlen(input);
    for (i = 1; i < l; i++) {
        for (j = 0; j < (l - i + 1); j++) {
            if (input[j] == input[j+i-1])
                a++;
	}
    }
    if (input[0] == input[l-1])
	a++;
    cout << a << "\n";
    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