UVA 1585 - Score

#include <iostream>
#include <cstring>
using namespace std;
int main()
{
int n, len, sum;
char a[1000];
scanf("%d", &n);
while (n--){
scanf("%s", a);
sum = 0;
len = strlen(a);
for (int i=0; i<len; i++)
if (a[i] == 'O')
for (int j=1; a[i] == 'O'; j++,i++)
sum += j;
printf("%d\n", sum);
}
return 0;
}