九个月前的代码。。。

#include <iostream>
#include <string>
#include <algorithm>
using namespace std;

string str(string s) {
	if (s.find("L") != string::npos) {
		int i =  s.find("L");
		s.replace(i,1,"l");
		s.insert(i+1,"YES");
		return s;
	}
	if (s.find("O") != string::npos) {
		int i =  s.find("O");
		s.replace(i,1,"o");
		s.insert(i+1,"YES");
		return s;
	}
	if (s.find("V") != string::npos) {
		int i =  s.find("V");
		s.replace(i,1,"v");
		s.insert(i+1,"YES");
		return s;
	}
	if (s.find("E") != string::npos) {
		int i =  s.find("E");
		s.replace(i,1,"e");
		s.insert(i+1,"YES");
		return s;
	} else {
		return "NO";
	}
}

int main() {
	int n;
	cin >> n;
	string s[n];
	for ( int i = 0 ; i < n ; i++ ) {
		cin >> s[i];
	}
	for ( int i = 0 ; i < n ; i++ ) {
		cout << str(s[i]) << endl;
	}
	return 0;
}