Cod sursa(job #799902)

Utilizator rapidistulfiorosTudor Daniel Marin rapidistulfioros Data 20 octombrie 2012 12:56:41
Problema Cautare binara Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 1.08 kb
#include<stdio.h>

int n, v[100001];

int caut0(int x){
    int i=0,pas;
    pas=1<<16;
    while(pas!=0)
    {
        if(i+pas<=n && v[i+pas]<=x)
            i += pas;
        pas /= 2;
    }
    if(v[i] != x) return -1;
    return i;
}

int caut1(int x){
    int i=0,pas;
    pas=1<<16;
    while(pas!=0)
    {
        if(i+pas<=n && v[i+pas]<=x)
            i += pas;
        pas /= 2;
    }
    return i;
}

int caut2(int x){
    int i=0,pas;
    pas=1<<16;
    while(pas!=0)
    {
        if(i+pas<=n && v[i+pas]<x)
            i += pas;
        pas /= 2;
    }
    return i+1;
}


int main(){
    freopen("cautbin.in","r",stdin);
    freopen("cautbin.out","w",stdout);
    int i,m,x,tip;
    scanf("%d",&n);
    for(i=1 ; i<=n ; i++)
        scanf("%d",&v[i]);
    scanf("%d",&m);
    for(i=1;i<=m;i++)
    {
        scanf("%d%d",&tip,&x);
        if(tip == 0)
            printf("%d\n",caut0(x));
        if(tip == 1)
            printf("%d\n",caut1(x));
        if(tip==2)
            printf("%d\n",caut2(x));
    }
    return 0;
}