0
1
mirror of https://git.sb/baoshuo/OI-codes.git synced 2024-12-02 23:56:29 +00:00
OI-codes/Luogu/UVA11362/UVA11362.cpp

28 lines
515 B
C++
Raw Normal View History

2021-09-15 10:18:52 +00:00
#include <bits/stdc++.h>
using namespace std;
int t, n;
bool flag;
string s[10005];
int main() {
cin >> t;
while (t--) {
flag = false;
cin >> n;
for (int i = 0; i < n; i++) {
cin >> s[i];
}
sort(s, s + n);
for (int i = 0; i < n - 1; i++) {
if (s[i + 1].substr(0, s[i].size()) == s[i]) {
flag = true;
break;
}
}
cout << (flag ? "NO" : "YES") << endl;
}
return 0;
}