Osajono

#include <iostream>
#include <string>
using namespace std;
int main() {
	std::cin.sync_with_stdio(false);//Faster execution
	unsigned long osajonot = 0;
	string s;
	cin >> s;
	//First iterate over all single characters -> ensimmäisenKategorian osajonojen määrä on merkkijonon pituus
	unsigned int strLen = s.size();
	osajonot += strLen;
	//Jaa osajonoihin, joissa ensimmäinen ja viimeinen kirjain ovat samat
	//Iteroi string oliota
	for(unsigned int startIndex = 0; startIndex < strLen - 1; startIndex++){
		char atStart = s.at(startIndex);
		for(unsigned int i = startIndex + 1; i<strLen; i++){
			if(s.at(i) == atStart){
				osajonot++;
			}
		}
	}
	cout << osajonot << 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