螺旋折线(c++实现)

#include<iostream>
#include<cmath>
using namespace std;
typedef long long LL;
int x,y;
LL res;

int main(){
    scanf("%d%d",&x,&y);
    LL k = (LL)max(abs(x),abs(y));
    if(x>=y) res = (LL)4*k*k + abs(x-k) + abs(y-k);
    else res = (LL)4*k*k - abs(x-k) - abs(y-k);
    printf("%lld",res);
    
}