#include <stdio.h>

#define MAX_N           1000000

#define IS_PRIME        0
#define NOT_PRIME       1

int main(void)
{
    int primeTable[MAX_N] = {1, 1};
    int i, j;
    for (i = 2; i < MAX_N; ++i)
        if (primeTable[i] == IS_PRIME)
            for (j = i; j < MAX_N; j += i)
                primeTable[j] = NOT_PRIME;

    return 0;
}