Cod sursa(job #470979)

Utilizator SpiderManSimoiu Robert SpiderMan Data 16 iulie 2010 14:40:33
Problema Cautare binara Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.97 kb
# include <cstdio>

const char FIN[] = "cautbin.in", FOU[] = "cautbin.out";

int V[100005] ;
int N, T ;

int main ()
{
    freopen ( FIN, "r", stdin ) ;
    freopen ( FOU, "w", stdout ) ;

    scanf ( "%d", &N ) ;

    for (int i = 1; i <= N; ++i) {
        scanf ( "%d", &V[i] ) ;
    }

    int aux, cnt, i ;

    for ( aux = 1; aux <= N; aux <<= 1 ) ;

    for ( scanf ( "%d", &T ) ; T ; --T ) {
        int a, val ;

        scanf ( "%d %d", &a, &val ) ;

        for (cnt = aux, i = 0; cnt; cnt >>= 1) {
            if (i + cnt <= N && ( a != 2 ? V[i + cnt] <= val : V[i + cnt] < val ) ) {
                i += cnt;
            }
        }

        if ( a == 2 ) {
            printf ( "%d\n", ++i ) ;
        } else if ( a == 0 && V[i] == val || a == 1 ) {  // verificam daca se gaseste valoarea in sir pentru cazul 0 x
            printf ( "%d\n", i ) ;
        } else {
            printf ( "-1\n" ) ;
        }


    }

    return 0;
}