1036F - Relatively Prime Powers what's wrong with this code please?

include<stdio.h>

include<math.h>

/*function to find how many positive integers from 1 to n are power of m. as there are 3 numbers from 1 to 10 which is power of 2. so, ret_com(10,2.00) = 3*/

long long ret_com(long long n, double m){

return pow(n,(1/m)) - 1;

}

int main(){

long long a,x;

int i,j;

scanf("%d",&j);

for(i = 0; i < j; i++){

    scanf("%lld",&a);

/* i am trying to find how many numbers are power of a number. as gcd(k1,k2,k3,k4,.....) = 1, i have to find numbers of only single power(no square, no cube, no forth power and so on)*/

x = ret_com(a,2.00) + ret_com(a,3.00) + ret_com(a,5.00) + ret_com(a,7.00) + ret_com(a,11.00) + ret_com(a,13.00) + ret_com(a,17.00) + ret_com(a,19.00) + ret_com(a,23.00) + ret_com(a,29.00) + ret_com(a,31.00) + ret_com(a,37.00) + ret_com(a,41.00) + ret_com(a,43.00) + ret_com(a,47.00) + ret_com(a,53.00) + ret_com(a,59.00) - ret_com(a,6.00) - ret_com(a,10.00) - ret_com(a,14.00) - ret_com(a,15.00) - ret_com(a,21.00) - ret_com(a,22.00) - ret_com(a,26.00) - ret_com(a,33.00) - ret_com(a,34.00) - ret_com(a,35.00) - ret_com(a,38.00) - ret_com(a,39.00) - ret_com(a,46.00) - ret_com(a,51.00) - ret_com(a,55.00) - ret_com(a,57.00) - ret_com(a,58.00) + ret_com(a,30.00) + ret_com(a,42.00);/*using inclusion and exclusion principle.*/

    printf("%lld\n",a - x - 1);
}

return 0;

}