题解 | 绕距
绕距
https://www.nowcoder.com/practice/7a245fc6284f4139b4fb21de58e68483
#include <stdio.h>
#include <math.h>
#include <stdlib.h>
int main()
{
int x_1,x_2,y_1,y_2;
scanf("%d %d %d %d",&x_1,&y_1,&x_2,&y_2);
long double d_e=sqrtl(1.0l*(x_1-x_2)*(x_1-x_2)
+1.0l*(y_1-y_2)*(y_1-y_2));
int d_m=abs(x_1-x_2)+abs(y_1-y_2);
printf("%.18Lf",d_m-d_e);
return 0;
}
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