题解 | #D博弈与核心能源动力#

 #include<bits/stdc++.h>
  using namespace std;
  int main ()
   {
   int m,k,g,p,ans=0,t=0;
   cin>>m>>k>>g>>p;
    if (m/p>0)t=m/p;
     while(k/2||t||g/4){
        k+=t;
        g+=t;
        ans+=t;
        t=k/2+g/4;
        k=k%2;
        g=g%4;
                     }
         cout<<ans;
     }