#include using namespace std; typedef signed long long ll; #undef _P #define _P(...) (void)printf(__VA_ARGS__) #define FOR(x,to) for(x=0;x<(to);x++) #define FORR(x,arr) for(auto& x:arr) #define ITR(x,c) for(__typeof(c.begin()) x=c.begin();x!=c.end();x++) #define ALL(a) (a.begin()),(a.end()) #define ZERO(a) memset(a,0,sizeof(a)) #define MINUS(a) memset(a,0xff,sizeof(a)) //------------------------------------------------------- int N; string S; int hoge(string S) { int i,j; int ret=0; FOR(i,50) { string R; FORR(c,S) { R+=c; if(R.size()>=5 && R.substr(R.size()-5)=="phnom") { R.resize(R.size()-5); R+="penh"; ret++; } } if(count(ALL(R),'h')||count(ALL(R),'e')) { S=""; ret++; FORR(c,R) { if(c=='h') continue; if(c=='e') S+='h'; else S+=c; } } else { S=R; } } int ma=0; FOR(i,(int)S.size()-4) { if(S.substr(i,5)=="phnom") { for(j=i+3;j>S; int ret=hoge(S); if(count(ALL(S),'h')||count(ALL(S),'e')) { string R; FORR(c,S) { if(c=='h') continue; if(c=='e') c='h'; R+=c; } ret=max(ret,1+hoge(R)); } cout<