题目描述

样例

#include<cstdio>
#include<iostream>
#include<algorithm>
#include<cmath>
using namespace std;

const int N=10010;

int a[N][N];

int main(){
    int w,m,n;
    cin >> w >> m >> n;
    m--;
    n--;

    int rm=m/w;
    int rn=n/w;
    int cm=m%w;
    int cn=n%w;

    int count = abs(rm-rn);
    if(rm%2==rn%2){
        count+=abs(cm-cn);
    }
    else{
        count+=abs(cm+cn-w+1);
    }
    cout << count;

    return 0;
}