#include <iostream>
#include <cstring>
using namespace std;
int main() {
int k=0;
char s[251];
cin.getline (s, 251);
for (int i=0; i<strlen(s); i++)
if((s[i]==33 or s[i]==46 or s[i]==63) and ((s[i-1]>=65 && s[i-1]<=90) or (s[i-1]>=97 && s[i-1]<=122) or(s[i-1]>=48 && s[i-1]<=57))) k++;
cout << k;
return 0;
}
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