이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include<bits/stdc++.h>
using namespace std;
#define lalala ios_base::sync_with_stdio(false);cin.tie(NULL);
//#define endl '\n'
#define ll long long
int main(){
string str;cin>>str;
int n=str.length();
int a,b,c,d;a=b=c=d=0;
int cev=0;
for(int i=0;i<n;i++){
if(str[i]=='H')a=1;
if(str[i]=='O'&&a)b=1;
if(str[i]=='N'&&a&&b)c=1;
if(str[i]=='I'&&a&&b&&c)d=1;
if(a&&b&&c&&d){
cev++;
a=b=c=d=0;
}
}
cout<<cev<<endl;
}
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