#include <stdio.h>

void hollowPyramid ( int n );

int main()
{
    int n;

    scanf("%d", &n);
    hollowPyramid ( n );

    return 0;
}

/* 你的代码将被嵌在这里 */

/*

 
 */

void hollowPyramid ( int n ){
    
    int i, j, k;
    
    for (i = 1; i <=n ; i++) {
        for (j = 0; j < (n-i); j++) {
            printf(" ");
        }
        if (i < n) {
            for (k = 0; k < 2*(i-1) + 1; k++) {
                if (k == 0 || k == 2*(i-1)) {
                    printf("%d",i);
                }else{
                    printf(" ");
                }
                
            }
            
        }else{
            for (k = 0; k < 2*(i-1) + 1; k++) {
                    printf("%d",i);
                
            }
        }
        printf("\n");
    }
}

 

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