3-1 得分 UVa1585

#include <vector>
#include <iostream>
#include <string>
using namespace std;
int main()
{
	string word;
	cin >> word;
	int num = 0,t=0;
	for (int i = 0; i < (int)word.size(); i++)
	{
	if (word[i] == 'X')
	{
	t = 0;
	continue;
	}
	t++;
	num += t;
	}
	cout << num << endl;
	return 0;
}