求助玄关

#include <bits/stdc++.h>
using namespace std;
int a=1,sum=0;
int main() {
   int x,y;
   int x1;

   cin>>x>>y;
   x1=x;
       
   if(x==0&&y==0||x==y){
       cout<<0;
       return 0;
    
}
    for(int i=1;;i++){
        
        if(i%2==0){
            x-=a;
        }
        else{
            x+=a;
        }
        //cout<<a<<"\n";
        sum+=a;
        
    
        if(x==y){
            break;
        }
        a=2*i+1;
        
    }
   cout<<sum;
    return 0;
}