#include <iostream>
#include <cmath>

#define eps 1e-8

using namespace std;

double y;
double fx(int x){
    return 6 * pow(x, 7.0) + 8 * pow(x, 6.0) + 7 * pow(x, 3.0) + 5 * x * x - y * x;
}
double three(double l,double r){
    while(l + eps < r){
        double midl = (l + r) / 2.0;
        double midr = (midl + r) / 2.0;
        if(fx(midl) < fx(midr))
            r = midr;
        else 
            l = midl;
    }
    return l;
}
int main(){

    int T;
    cin >> T;

    while(T -- ){
        scanf("%lf", &y);
        int t = three(0, 100);
        printf("%.4f\n",fx(t));
    }
    return 0;
}