#include <bits/stdc++.h>
using namespace std;


int main()
{
	string str;
	getline(cin, str);
	
	int count = 0;
	
	for (int i = 0; i < str.length(); i++)
	{
		for (int j = i; j < str.length(); j++)
		{
			bool success = true;
			for (int k = i; k <= j; k++)
			{
				if (str[i] != str[k])
				{
					success = false;
					break;
				}
			}
			
			if (success) count++;
		}
	}
	
	cout << count;
}