题解 | #有序序列判断#

#include <bits/stdc++.h>
#include <vector>
using namespace std;

int main() {
    int n;
    cin >> n;
    vector<int> a(n);
    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }
    vector<int> b(n), c(n);
    b = c = a;
    sort(a.begin(), a.end());
    sort(b.begin(), b.end(), greater());
    if (c == b || c == a)
        cout << "sorted";
    else
        cout << "unsorted";

}