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- #include <iostream>
- #include <string>
- using namespace std;
- int main()
- {
- string s;
- getline(cin, s);
- int n = s.length();
- for(int i = 1; i < n; i++)
- {
- if(s[i - 1] == 'p' && s[i] == 'h')
- {
- s.replace(i - 1, 2, "f");
- i--;
- }
- }
- cout << s;
- }
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