题解 | #有序序列判断#vector 大法好

#include <algorithm>
#include <iostream>
#include <vector>
using namespace std;

int main() {
    int n;
    cin >> n;
    int num;
    vector<int> vec1, vec2, vec3;
    while (cin >> num) {
        vec1.push_back(num);
        vec2.push_back(num);
        vec3.push_back(num);
    }
    sort(vec2.begin(), vec2.end());
    sort(vec3.rbegin(), vec3.rend());
    if (vec1 == vec2 || vec1 == vec3)
        cout << "sorted" << endl;
    else
        cout << "unsorted" << endl;
}
// 64 位输出请用 printf("%lld")