简单二分

#include<bits/stdc++.h>
using namespace std;
int a[1005];
int main(){
    int n;
    cin >> n;
    for(int i = 0;i < n;i ++){
        cin >> a[i];
    }
    int q;
    cin >> q;
    int l = 0,r = n - 1,mid,ans;
    while(l <= r){
        mid = (l + r) / 2;
        if(a[mid] >= q){
            ans = mid;
            r = mid - 1;
        } else {
            l = mid + 1;
        }
    }
    cout << ans + 1;
    return 0;
}