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#include<iostream>
#include<iomanip>

using namespace std;

int main(){
//	freopen("in.txt","r",stdin);
//	freopen("out.txt","w",stdout);

	double in[12];
	double sum = 0.00;

	for(int i=0;i<12;i++){
		cin>>in[i];
		sum += in[i];
	}

	
	cout<<"$"<<setprecision(2)<<fixed<<sum/12;

	return 0;
}

本文标签: FinancialManagement