#include <stdio.h>

int main() {

    int vals[] = {4, 6, 7, 2, 1, 5, 3, 0};

    int array[8];

    int i;
    for (i=0; i<8; i++)
        array[vals[i]] = i;

    printf("%d %d\n", array[0], array[1]);
    printf("%d %d\n", array[2], array[3]);
    printf("%d %d\n", array[4], array[5]);
    printf("%d %d\n", array[6], array[7]);

    return 0;
}