#include "stdio.h"
main()
{
    int i,x,k=1,m,n;
    scanf("%d",&x);
    for(i=0;i<44; ){
        if(k%2==1){
            for(m=i;m<k*x&&i<44;m++){
                printf("%4d",m);
                i++;
                }
            printf("\n");k++;
        }
        else{
            for(n=k*x-1;n+1>m&&i<44;n--){
                printf("%4d",n);
                i++;
            }
            printf("\n");k++;
        }        
    }
}
如图：41下面应该是42,40下面应该是43

        else{
            for(n=k*x-1;n+1>m;n--){
                if(n<44)printf("%4d",n);
                else printf("    ");
                i++;
            }