欢乐赛#51 T3

#include <bits/stdc++.h>
using namespace std;
int main(){
    string s;
    cin>>s;
    int ans=0;
    for (int i=0;i<s.size();i++){
        if (s[i]=='a'&&s[i+1]=='c'||s[i]=='A'&&s[i+1]=='C'){
            ans++;
        }
    }
    cout<<ans;
    return 0;
}