好嗨呦

#include<cstdio>
using namespace std;
int main()
{
	int n;
    double ans=0.00;
    scanf("%d",&n);
    while(n){
        int m;
        scanf("%d",&m);
        if(m<=70)
            ans+=0.1;
        else
            ans+=0.1*(m/70+1);
        n--;
    }
    printf("%.1lf",ans);
    return 0;
}