本题求大佬帮我看看,我这是哪里错了,明明样例全对,可是就是全WA,也不知道哪里错了,求求了帮我看看,下面是我的代码:

#include<bits/stdc++.h>
using namespace std;
const int N = 2e2 + 10;
const int mod = 998244353;
const int inf = 1e9 + 10;
string coutcol,coltcou;
bool ok = true;
void Convert_to_uppercase(){
	string cou = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
	for(char &coutcol : cou){
		coutcol = tolower(coutcol); //转换为小写
	}
	cout << coutcol << endl;
}
void Convert_to_lowercase(){
	string col = "abcdefghijklmnopqrstuvwxyz";
	for(char &coltcou : col){
		coltcou = toupper(coltcou); //转换为大写
	}
	cout << coltcou << endl;
}
void customize_swap(int &swap_variable1,int &swap_variable2){
	int tp = swap_variable1;
	swap_variable1 = swap_variable2;
	swap_variable2 = tp;
}
void solve(){
	string s[1000];
	int n; cin >> n;
	for(int i = 0;i < n;i++) cin >> s[i];
	string t;
	for(int i = 0;i < n;i++) t += s[i];
	int cnt = t.size() - 1;
	for(int i = 0;i < cnt;i++){
		if(t[i] < t[i - 1]){
			ok = false;
			break;
		}
	}
	if(ok) cout << "1" << endl;
	else cout << "0" << endl;
	ok = true;
}
signed main(){
	int t = 1; cin >> t;
	while(t--) solve();
	return 0;
}