题解

#include<bits/stdc++.h>
using namespace std;
int main(){
int a;
cin >> a;
double f = 0.0;
int b[a + 1];
for(int i = 1;i <= a;i++){
cin >> b[i];
if(b[i] > 70){
if(b[i] % 70 == 0){
f +=b [i] / 70 * 1;
}
else f += b[i] / 70 + 1;
}
else f += 1;
}
cout << f / 10;

return 0;

}