4月18日打卡

 

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

int N = 100010;

int q[N];

int main(){
    int n, x;
    cin >> n >> x;
    for (int i = 0; i < n; i ++){
        cin >> q[i]; 
    }
    int l = 0, r = n - 1;
    while(l <= r){
        int mid = l + r >> 1;
        if(q[mid] > x){
            r = mid - 1;
        }
        else l = mid;
    }
    cout << l;
}