C++ 代码
#include<bits/stdc++.h>
using namespace std;
int a,b;
int x,y;
int main()
{
cin >> a >> b >> x >> y;
//a-x-y-b
//a-y-x-b
//a-b
int res1 = 0;
res1 = abs(a-x)+ abs(y-b);
int res2 = 0;
res2 = abs(a-y) + abs(x-b);
int res3 = abs(a-b);
res1 = min(res3, min(res1, res2));
cout << res1;
}