Cod sursa(job #2645111)

Utilizator i_0__0_iNaimul i_0__0_i Data 27 august 2020 07:01:00
Problema Cautare binara Scor 0
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.02 kb
#include <bits/stdc++.h>
using namespace std;

int32_t main()
{
    ios::sync_with_stdio(false), cin.tie(nullptr);
    freopen("cautbin.in", "r", stdin);
    freopen("cautbin.out", "w", stdout);
    int n; cin >> n;
    vector<int> v(n);
    for (auto &it : v) cin >> it;
    int m; cin >> m;
    while (m--) {
        int x, q; cin >> q >> x;
        if (q == 0) {
            cout << (binary_search(v.begin(), v.end(), x) ? upper_bound(v.begin(), v.end(), x) - v.begin() : -1) << '\n';
        } else if (q == 1) {    
            int l = 0, r = n-1, it = 50, ans = 0;
            while (it--) {
                int mid = (l + r) / 2;
                if (v[mid] >= x){
                    if (v[mid] == x) ans = max(ans, x);
                    r = mid;
                } else {
                    l = mid;
                }
            }
            cout << ans + 1 << '\n';
        } else {
            cout << lower_bound(v.begin(), v.end(), x) - v.begin() + 1 << '\n';
        }
    }


    return 0;
}