baoshuo/OI-codes
baoshuo/OI-codes
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B - XOR Specia-LIS-t

Browse Source 
https://codeforces.com/contest/1604/submission/133638242
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Baoshuo Ren 2021-10-30 23:02:30 +08:00 committed by Baoshuo Ren
parent fa0a2c8f33
commit c945e46541
Signed by: baoshuo
GPG Key ID: 70F90A673FB1AB68
1 changed files with 25 additions and 0 deletions
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CodeForces/1604/B/B.cpp Normal file
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#include <bits/stdc++.h>
using namespace std;
int t, n, a[100005];
int main() {
cin >> t;
while (t--) {
bool flag = false;
cin >> n;
for (int i = 1; i <= n; i++) {
cin >> a[i];
}
if (n % 2 == 0) {
cout << "YES" << endl;
continue;
}
for (int i = 1; i < n; i++) {
flag = flag || a[i] >= a[i + 1];
}
cout << (flag ? "YES" : "NO") << endl;
}
return 0;
}