Running programs is still broken sometimes

[dj3500]

A report from CodeForces user fnf. When running problem http://codeforces.com/contest/620/problem/A the second testcase usually gets "stuck" when run on the following program:

#include<iostream>
#include<cmath>
#include<cstring>
#include<set>
#include<vector>
#include<map>
#include<algorithm>
#include<utility>
#define MX 100000
#define pb push_back
#define mp make_pair
#define fs first
#define sec second
#define TC int T;cin>>T;while(T--)
#define endl "\n"

typedef long long int LL;
using namespace std;
int main()
{
   ios_base::sync_with_stdio(false);cin.tie(0);


    LL x,y,a,b;
    cin>>x>>y>>a>>b;
    cout<<max(abs(x-a),abs(y-b))<<endl;

 return 0;
}