#include <bits/stdc++.h>
#define LL long long
#define PII pair<int,int>
#define mp make_pair
#define fi first
#define se second
using namespace std;
const int maxn = 1e5+10;

const int score[11] = {95, 90, 85, 80, 75, 70, 67, 65, 62, 60, 0};
const double cnt[11] = {4.3, 4.0, 3.7, 3.3, 3.0, 2.7, 2.3, 2.0 ,1.7, 1.0, 0.0};
void work(){
    int sum;
    scanf("%d",&sum);
    double ans = 0.0;
    for (int i=0;i<11;i++)
        for (int j=0;j<11;j++)
            for (int k=0;k<11;k++)
        for (int l=0;l<11;l++){
            int add = score[i] + score[j] + score[k] +score[l];
            if (add > sum) continue;
            double tmp = cnt[i] + cnt[j] + cnt[k] + cnt[l];
            if (tmp > ans) ans = tmp;
    }
    printf("%.1f\n", ans);
}
void vgeler(){
    int test;
    scanf("%d",&test);
    while (test--) work();
}
int main(){
    vgeler();
    return 0;
}