#include<iostream>
#include<cstring>
using namespace std;
int main(){
	int arr[1000][100];
	memset(arr,0,sizeof(arr));
	cout<<"please input"<<endl;
	int w,v,m,n,maxn,minn,x1,y1,x2,y2,tempx,sum=0;
	cin>>w>>m>>n;
	if(m>n){
		maxn=m;
		minn=n;
	}else{
		maxn=n;
		minn=m;
	}
	for(int i=0;;i++){
		int j;
		if(i==0||i%2==0){
			for(j=0;j<w;j++){
				sum++;
				arr[i][j]=sum;
				if(sum==minn){
					x1=i;
					y1=j;
					cout<<"sum:"<<sum<<"1minn:"<<minn<<":"<<x1<<" "<<y1<<endl;
				}
				if(sum==maxn){
					x2=i;
					y2=j;
					cout<<"sum:"<<sum<<"2maxn:"<<maxn<<":"<<x2<<" "<<y2<<endl;
				}
			}	
		}else{
			for(j=w-1;j>=0;j--){
				sum++;
				arr[i][j]=sum;
				if(sum==minn){
					x1=i;
					y1=j;
					cout<<"sum:"<<sum<<"3min:"<<x1<<" "<<y1<<endl;
				}
				if(sum==maxn){
					x2=i;
					y2=j;
					cout<<"sum:"<<sum<<"4maxn:"<<x2<<" "<<y2<<endl;
				}
			}
		}
		
		if(sum>=maxn){
			break;
		}
	}
	int flag=1;
	for(int i=0;;i++){
		int j=0;
		for(;j<w;j++){
			cout<<arr[i][j]<<" ";
		}
		cout<<endl;
		if(flag==0){
			break;
		}
		if(arr[i][--j]==0){
			flag=0;
		}
	}
	
	tempx=x1-x2;
	if(tempx<0){
		tempx=-1*tempx;
	}
	cout<<tempx+y2-y1;

	return 0;
}