Problem 10474 - Where is the Marble? (time 0.052)

/*
    Problem 10474 - Where is the Marble? (time 0.052)
    URL: http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=16&page=show_problem&problem=1415
    Alexey Solodovnikov (alexey.solodovnikov@gmail.com)
*/


#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

#define SIZE 16*1024
#define N    10001
static unsigned int values[N];
static int  buffer_size = 0;
static int  buffer_pos  = -1;
static char buffer[SIZE];

unsigned int readInt()
{
    unsigned int value  = 0;
    unsigned int digits = 0;
    char b;

    if (buffer_pos == -1)
    {
        buffer_size = fread(buffer, 1, SIZE, stdin);
        buffer_pos  = 0;
    }

    while(buffer_size > 0)
    {

        if (buffer_pos == buffer_size)
        {
            buffer_size = fread(buffer, 1, SIZE, stdin);
            buffer_pos = 0;
        }

        while(buffer_pos < buffer_size)
        {
                b = buffer[buffer_pos++];
                    if (b == '\n' || b == ' ')
            {
                return value;
            }
                    else
            {
                        value = value*10 + (b - '0');
                digits++;
            }
        }
    }
    return value;
}

int main(int argc, char **argv)
{

    unsigned int  n, q, num, max, c = 0;

    while(1)
    {
        c++;
        n = readInt();
        q = readInt();

        if(n==0 && q==0) break;

        max = 0;
        memset(values, 0, N * sizeof(unsigned int));

        for(unsigned int i=0; i<n; i++)
        {
            num = readInt();
            values[num]++;
            if(num > max) max = num;
        }

        unsigned int pos = 1, temp;
        for(unsigned int i=0; i <= max; i++)
        {
            if(values[i] !=0){
                temp = values[i];
                values[i] = pos;
                pos += temp;
            }

        }

        printf("CASE# %d:\n", c);
        unsigned qval;
        for(unsigned int i=0; i<q; i++)
        {
            qval = readInt();
            int ret = values[qval];
            if(ret == 0)
                printf("%d not found\n", qval);
            else
                printf("%d found at %d\n", qval, ret);
        }
    }
    return 0;
}