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2022 Henan Mengxin League game 2: Henan University of technology L - HPU

2022-07-20 21:51:00 【WA_ automata】

L - HPU

How many are found through direct traversal H P U that will do . How many are found through direct traversal HPU that will do . How many are found through direct traversal HPU that will do .

Please note that , s t r i n g Medium s . s i z e ( ) It's an unsigned integer , Should be converted to i n t type . Please note that ,string Medium s.size() It's an unsigned integer , Should be converted to int type . Please note that ,string Medium s.size() It's an unsigned integer , Should be converted to int type .

Time complexity ： O ( n ) Time complexity ：O(n) Time complexity ：O(n)

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

int main()
{
    
	string s;cin>>s;
	int ans=0;
	for(int i=0;i<(int)s.size()-2;i++)
		if(s[i]=='H'&&s[i+1]=='P'&&s[i+2]=='U') 
			ans++;
	cout<<ans;
	
	return 0;
}
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