大佬求调

#include<bits/stdc++.h>
using namespace std;
double dis(double x1,double x2,double y1,double y2){
	double ans;
	ans=sqrt(pow((x2-x1),2)+pow((y2-y1),2));
	return ans;
}
int main(){
	double x1,x2,y1,y2,z1,z2;
	cin>>x1>>x2>>y1>>y2>>z1>>z2; 
	double ans=dis(x1,x2,y1,y2)+dis(x1,x2,z1,z2)+dis(z1,z2,y1,y2);
	printf("%.2lf",ans);
	return 0;
}

样例能过，但全错 大佬求调

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