Cod sursa(job #3304826)

Utilizator nopreanOprean Natasha noprean Data 27 iulie 2025 16:59:36
Problema Cautare binara Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.31 kb
#include <bits/stdc++.h>

using namespace std;
ifstream fin("cautbin.in");
ofstream fout("cautbin.out");
int n,m;
int A[100001];
void solve0(int x)
{
    int st=1,dr=n;
    int ans=-1;
    while(st<=dr)
    {
        int mijl=(st+dr)/2;
        if(A[mijl]==x)
        {
            ans=mijl;
            st=mijl+1;
        }
        else if(A[mijl]<x)
            st=mijl+1;
        else
            dr=mijl-1;
    }
    fout<<ans<<'\n';
}
void solve1(int x)
{
    int st=1,dr=n;
    int ans=-1;
    while(st<=dr)
    {
        int mijl=(st+dr)/2;
        if(A[mijl]<=x)
        {
            ans=mijl;
            st=mijl+1;
        }
        else
            dr=mijl-1;
    }
    fout<<ans<<'\n';
}
void solve2(int x)
{
    int st=1,dr=n;
    int ans=-1;
    while(st<=dr)
    {
        int mijl=(st+dr)/2;
        if(A[mijl]>=x)
        {
            ans=mijl;
            dr=mijl-1;
        }
        else
            st=mijl+1;
    }
    fout<<ans<<'\n';
}
int main()
{
    fin>>n;
    for(int i=1;i<=n;i++)
        fin>>A[i];
        fin>>m;
    for(int i=1;i<=m;i++)
    {
        int tip,x;
        fin>>tip>>x;
        if(tip==0)
            solve0(x);
        else if(tip==1)
            solve1(x);
        else
            solve2(x);
    }
    return 0;
}