编译错误求调必关

#include<bits/stdc++.h>
using namespace std;
int main(){
	int t;
	string a[101],s;
	cin>>t;
	for(int i=1;i<=t;i++){
		cin>>a[i];
		s=a[i]; 
		if(s.size()<8){
			cout<<"N"<<endl;
			continue;
		} 
		if(!(isupper(s))){
			cout<<"N"<<endl;
			continue;
		}
		if(!(isdigit(s))){
			cout<<"N"<<endl;
		}
		cout<<"Y"<<endl;
	} 
	return 0; 
}