#include <stdlib.h>
#include <stdio.h>
#include <ucore/math.h>

int main(int argc, char *argv[])
{
    unsigned int a,N;
    if (argc < 2) {
        printf("Usage %s interger1\n",argv[0]);
        return 1;
    }
    a = atoi(argv[1]);
    N = uc_phi_32(a);
    printf("phi of %u is %u\n",a,N);

    return 0;
}