ACM-Teleportation

我的代码：

#include <bits/stdc++.h>
using namespace std;
int main()
{
    int a,b,x,y;
    cin>>a>>b>>x>>y;
    int count1,count2,count3;
    count1 = abs(b-a);//直接运
    count2 = abs(x-a)+abs(b-y);
    count3 = abs(y-a)+abs(b-x);
    int MIN;
    MIN = count1<count2? count1:count2;
    MIN = MIN<count3? MIN:count3;
    cout<<MIN;
}