你被骗了（大雾） 其实说个事

#include <bits/stdc++.h>
#define I using
#define AK namespace
#define IOI std
I AK IOI;
int main(){
	char x;
	int i=1;
	while(scanf("%c",&x)){
		if(x=='a'||x=='e'||x=='i'||x=='o'||x=='u'){
			printf("%d",i);
			return 0;
		}
		i++;
	}
	printf("0");
	return 0;
}

TLE

#include <bits/stdc++.h>
#define I using
#define AK namespace
#define IOI std
I AK IOI;
int main(){
	char x;
	int i=1;
	while(cin>>x){
		if(x=='a'||x=='e'||x=='i'||x=='o'||x=='u'){
			printf("%d",i);
			return 0;
		}
		i++;
	}
	printf("0");
	return 0;
}

AC?

已知scanf>cin，那为什么会TLE

https://qqwhale.com/problem/6460