Cod sursa(job #1274262)

Utilizator bogdi1bogdan bancuta bogdi1 Data 23 noiembrie 2014 17:41:24
Problema Cautare binara Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 1.25 kb
#include <cstdio>
int v[100001];
using namespace std;
int cb0(int st, int dr, int val)
{
    int med;
    while(st<=dr){
        med=(st+dr)/2;
        if(v[med]<=val)
            st=med+1;
        else
            dr=med-1;
    }
    if(v[med]>val)
        med--;
    return med;
}
int cb1(int st, int dr, int val)
{
    int med;
    while(st<dr){
        med=(st+dr)/2;
        if(v[med]<=val)
            st=med+1;
        else
            dr=med;
    }
    if(v[med]>val)
        med--;
    return med;
}
int cb2(int st, int dr,int val)
{
    int med;
    while(st<dr){
        med=(st+dr)/2;
        if(v[med]<val)
            st=med+1;
        else
            dr=med;
    }
    if(v[med]<val){
        med++;
    }
    return med;
}
int main()
{   freopen("cautbin.in", "r", stdin);
    freopen("cautbin.out", "w", stdout);
    int n,m,i,tip,val;
    scanf("%d", &n);
    for(i=1; i<=n; i++)
        scanf("%d", &v[i]);
    scanf("%d", &m);
    for(i=0; i<m; i++){
        scanf("%d%d", &tip, &val);
        if(tip==0)
            printf("%d\n", cb0(1, n, val));
        if(tip==1)
            printf("%d\n", cb1(1, n, val));
        if(tip==2)
             printf("%d\n", cb2(1, n, val));
    }
    return 0;
}