#include <bits/stdc++.h> using namespace std; int main(){ int cur=1; int ans=1; char c; cin>>c; cin>>c; if (c=='a'){ cur=1; } if (c=='i'){ cur=0; } cin>>c; cin>>c; while (cin>>c){ cin>>c; if (c=='i'){ if (cur==0){ ans++; } else{ break; } cin>>c; cin>>c; } if (c=='a'){ if (cur==1){ ans++; } else{ break; } cin>>c; cin>>c; } } cout<<ans; }