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

int cmd(int a, int b) {
    return a > b;
}
// https://blog.csdn.net/qq_40160605/article/details/80150252
/*
结果：
3 7
4 15

2 7
3 4
*/
int main() {
    int a[6] = {1, 2, 4, 7, 15, 34};
    sort(a, a + 6);                        //按从小到大排序
    int p1 = lower_bound(a, a + 6, 7) - a; //返回数组中第一个大于或等于被查数的值
    int p2 = upper_bound(a, a + 6, 7) - a; //返回数组中第一个大于被查数的值
    cout << p1 << " " << a[p1] << endl;
    cout << p2 << " " << a[p2] << endl;

    puts("================================================");

    sort(a, a + 6, cmd); //按从大到小排序
    // int a[6] = {34,15,7,4,2,1};
    int p3 = lower_bound(a, a + 6, 7, greater<int>()) - a; //返回数组中第一个小于或等于被查数的值
    int p4 = upper_bound(a, a + 6, 7, greater<int>()) - a; //返回数组中第一个小于被查数的值
    cout << p3 << " " << a[p3] << endl;
    cout << p4 << " " << a[p4] << endl;
    return 0;
}