#include<iostream> #include<cmath> using namespace std; int main(){ int n; cin>>n; int count=0; //总短信数 double cost=0; for(int i=0,x;i<n;i++){ cin>>x; count+=ceil((double)x/70); //向上取整 } cost=count*0.1; cout<<cost<<endl; return 0; }

#include <iostream> using namespace std; int main(){ int a[100],n,m,sum=0,i; cin>>n; m=n; for(i=0;n;n--,i++) cin>>a[i]; for(i=0;m;m--,i++) if(a[i]%70==0) sum+=a[i]/70; else sum+=a[i]/70+1; cout<<0.1*sum; return 0; }

#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; }

#include<bits/stdc++.h> using namespace std; int main(){ int a; double c=0; cin>>a; for(int i=1;i<=a;i++){ int b; cin>>b; if(b<=70){ c+=0.1; } else{ while(b>=0){ c+=0.1; b-=70; } } } cout<<c; return 0; }