3.1.png
3.2.png
#include<iostream>
using namespace std;
int main()
{
char a[50];
cin >> a;
int j = strlen(a);
int m = 0;
for (int i = 0; i <j-1; i++)
{
if (a[i] != a[i + 1])
m++;
}
cout <<(j-1-m);
}
