#include<iostream>
#include<cmath>
#include<algorithm>
#include<cstring>
#include<map>
using namespace std;
int main(){
    int test;
    cin>>test;
    while(test--){
        int n;
        cin>>n;
        if(n==0) cout<<"0.0"<<endl;
        else if(n==400) cout<<4.3*4<<endl;
        else{
            int sum=0;
            int dp[1050];
            for(int i=0;i<1050;i++){
                dp[i]=0;
            }
            int x[11]={43,40,37,33,30,27,23,20,17,10,0};
            int y[11]={95,90,85,80,75,70,67,65,62,60,0};
            for(int i=0;i<11;i++){
                for(int j=y[i];j<=n;j++){
                    dp[j]=max(dp[j],dp[j-y[i]]+x[i]);
                }
            }
            printf("%.1f\n",1.0*dp[n]/10);
    }
}
    return 0;
}