#include<bits/stdc++.h> using namespace std; int main() { int n,m; cin>>n>>m; int a[n][m]={}; int n1,m1,n2,m2; cin>>n1>>m1>>n2>>m2; a[n1][m1]=1,a[n2][m2]=1; int bd=n+m,bs=0,bss=0; bs+=n1-1; bs+=m1-1; bs+=n-n2; bs+=m-m2; bss+=n2-1; bss+=m2-1; bss+=n-n1; bss+=m-m1; cout<<min(bss,min(bd,bs)); return 0; }