tj

#include<bits/stdc++.h>
using namespace std;

int main()
{
    string a;
    cin>>a;
    int cntc = 0,cntd = 0,cntp = 0;;
    for(int i = 0;i<a.size();i++)
            if(a[i]=='c')
                cntc++;
            else if(a[i]=='d')
                cntd++;
            else if(a[i]=='p')
                cntp++;
    cout<<min(cntc,min(cntd/2,cntp));
}