#include<bits/stdc++.h> using namespace std; double paixu(double a,double b){ return (a>b)? a-b:b-a; } int main() { int a,b,c,d; cin>>a>>b >>c>>d; double de,dm; de=sqrt(pow(a-c,2)+pow(d-b,2)); dm=paixu(a,c)+paixu(b,d); cout<<fixed<<setprecision(16)<<...
