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Im_a_big_SB楼主2025/6/30 13:23
#include<bits/stdc++.h>
using namespace std;
int main(void){
	int n;
	float sum=0;
	cin>>n;
	int arr[n];
	for(int i=0;i<n;i++){
		cin>>arr[i];
		sum+=arr[i];
	}
	cout<<int(sum)<<" "<<fixed<<setprecision(5)<<sum/n;
	return 0;
}
2025/6/30 13:23
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