蒟蒻QWQ2008 @ 2020-09-26 17:08:18
#include<bits/stdc++.h>
int main()
{
int x1,x2,x3;
int y1,y2,y3;
int s=0;
scanf("%d%d%d%d%d%d",&x1,&y1,&x2,&y2,&x3,&y3);
s+=sqrt(abs(pow((x2-x1),2)+pow((y2-y1),2)));
s+=sqrt(abs(pow((x3-x2),2)+pow((y3-y2),2)));
s+=sqrt(abs(pow((x3-x1),2)+pow((y3-y1),2)));
printf("%d",s);
}
by expnoi @ 2020-09-26 17:13:01
输出两位小数
by BotDand @ 2020-09-26 17:24:18
保留两位小数