This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include<bits/stdc++.h>
using namespace std;
const char a[] = {'H', 'O', 'N', 'I'};
int main(){
ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
string s;
cin >> s;
int ans = 0;
for(int i = 0, j = 0; i < (int)s.size(); i++){
if(s[i] == a[j]){
j += 1;
if(j == 4){
ans += 1;
j = 0;
}
}
}
cout << ans;
}
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