Osajono

#include <iostream>
#include <string>
using namespace std;


int main() {
	cin.sync_with_stdio(false);
	string Merkkijono,temp;
	cin>>Merkkijono;
	int count = Merkkijono.length(), letters = count;
	//if(Merkkijono[0] == Merkkijono[letters-1]) count++;
	for(int w=1; w<letters; ++w){
		for(int i=0; i<letters-w+1; ++i){
			if(Merkkijono[i] == Merkkijono[i+w]) count++;
			/*temp = Merkkijono.substr(i,w);
			if(temp[0] == temp[temp.length()-1]) count++;*/
		}
	}
	cout << count;
	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