#include<iostream>
#include<string>
using namespace std;
int main();
{
    int n;
    cin>>n;
    try{
        if(n<=0 || n>12)
        {
            throw "Invalid input";
        }
        double deposit ,total=0;
        for(int i=0;i<n;i++){
            cin>>deposit;
            if(deposit<0)
            {
                throw "Invalid input";
            }
            total+=deposit;
        }
        
    }
}