#include <bits/stdc++.h> using namespace std; int main() { int a,b; cin>>a>>b; int a2=abs(a),b2=abs(b); int maxn=max(a2,b2),minn=min(a2,b2); if(a>0&&b>0) cout<<max(a,b); else if(a0&&b0) cout<<0; else if(a<0&&b<0) cout<<maxn; else cout<<minn*2+maxn; }

#include<cstdio> using namespace std; int n,a[40][40],x,y; int main(){ scanf("%d",&n); x=1,y=(n+1)/2; for(int i=1;i<=n*n;i++){ a[x][y]=i; if(!a[(x-2+n)%n+1][y%n+1]) x=(x-2+n)%n+1,y=y%n+1; else x=x%n+1; } for(int i=1;i<=n;i++){ for(int j=1;j<=n;j++){ printf("%d ",a[i][j]); } printf("\n"); } }