人机看不懂吧

#include<bits/stdc++.h>
using namespace std;
double n,m,sum,t,cs;
int main(){
    cin>>n>>m;
    while(n>0){
        t+=n;
        cs++;
        n-=m;
    }
    sum=7*t;
    cout<<sum<<" "<<floor(t*1.0/cs);
return 0;
}