#include <iostream>
#include <stdio.h>
using namespace std;

int N;
double S[1000010];
double T;
int A[4];
int main() {
    //freopen("onoma.in","r", stdin);
    //freopen("onoma.out","w", stdout);
    cin >> N;
    for (int i=1;i<=N-1;++i) {
        cin >> S[i];
        S[i] = S[i] + S[i-1];
    }
    cin >> T;
    for (int i=0;i<4;++i) {
        cin >> A[i];
        if(i<3) {
               printf("%.2lf ", T + S[ A[i] ]  );       
        } else {
                printf("%.2lf\n", T + S[ A[i] ]  );              
        }       
    }
/*    for (int i=0;i<4;++i) {
        double ans = T;
        
        for(int j=1;j<= A[i] ;j++) {
                ans = ans + S[j];
        }
        
        printf("%.2lf\n", ans);
    } */
    
    
    return 0;
}