#include <iostream> using namespace std; int main(){ int x1,y1, x2,y2; int deltx , delty; cin>>x1>>y1>>x2>>y2; deltx = x2-x1; delty = y2-y1; if(deltx<0) deltx = -deltx; if(delty<0) delty = -delty; if(deltx>delty) cout<< deltx; else cout<<delty; // delty > deltx or delty == deltx return 0; }