题解

#include<bits/stdc++.h>
using namespace std;
int main()
{
double n;
cin>>n;
int x;
double sum=0.1n;
for (int i=1;i<=n;i++)
{
cin>>x;
if (x%70>0) x=x/70;
else x=x/70-1;
sum+=x0.1;
}
cout<<fixed<<setprecision(1)<<sum;
return 0;
}