Cod sursa(job #2875785)

Utilizator indianu_talpa_iuteTisca Catalin indianu_talpa_iute Data 22 martie 2022 12:35:22
Problema Cautare binara Scor 90
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.73 kb
#include <bits/stdc++.h>
#define MAXN 100000

using namespace std;

ifstream fin("cautbin.in");
ofstream fout("cautbin.out");

int main() {
    int n, m, arr[MAXN];
    fin >> n;
    for (int i = 0; i < n; i++)
        fin >> arr[i];
    fin >> m;
    for (int q = 0; q < m; q++) {
        int t, x;
        fin >> t >> x;
        if (t == 0) {
            int pos = upper_bound(arr, arr + n, x) - arr - 1;
            if (pos < n && arr[pos] == x)
                fout << pos + 1 << '\n';
            else
                fout << "-1\n";
        } else if (t == 1) {
            fout << upper_bound(arr, arr + n, x) - arr << '\n';
        } else {
            fout << lower_bound(arr, arr + n, x) - arr + 1 << '\n';
        }
    }
    return 0;
}