找规律 转换一下

#include<iostream>
#include<cmath>
using namespace std;
const int  N =1e4+5;
int main()
{
    int w,m,n;
    while(cin>>w>>m>>n)
    {
        int line1=(m+w-1)/w;//2
        int line2=(n+w-1)/w;//1
        //cout<<line1<<" "<<line2<<endl;
        if(line1%2==0)
        {
            m=(2*line1-1)*w-m+1;//11
            //cout<<m<<endl;
        }
        if(line2%2==0)
        {
            n=(2*line2-1)*w-n+1;//2
           // cout<<n<<endl;
        }
        int x1=line1,y1=m%w;
        int x2=line2,y2=n%w;
        cout<<abs(x1-x2)+abs(y1-y2)<<endl;
    }
    return 0;
}