View Code of Problem 57

#include<stdio.h>
#include<string.h>
#include<math.h>
#include<algorithm>
using namespace std;


int main()
{
    int n;
    scanf("%d",&n);
    for(int i = 1;i<=n;i++)
    {
        for(int j = n-i;j>=1;j--)
            printf(" ");
        for(int j = 1;j<=i;j++)
            printf("%d",j);
        for(int j = i-1;j>=1;j--)
            printf("%d",j);
        printf("\n");
    }
    for(int i = n-1;i>=1;i--)
    {
        for(int j = n-i;j>=1;j--)
            printf(" ");
        for(int j = 1;j<=i;j++)
            printf("%d",j);
        for(int j = i-1;j>=1;j--)
            printf("%d",j);
        printf("\n");
    }
    return 0;
}

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