30分求调！！！qwq

#include<bits/stdc++.h>
using namespace std;
int main(){
    int x,y;
	long long sum=0;
    cin>>x>>y;
    while(x&&y){
                swap(x,y);
                sum+=4*y*(x/y);
                x%=y;
    }
    cout<<sum;
    return 0;
}