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- #include <stdio.h>
- #include <stdlib.h>
- int main()
- {
- int i,j,n,start=0,tt,t2;
- scanf("%d",&n);
- if(n%2!=0) tt=(n/2)+1;
- else tt=n/2;
- t2=n;
- for(i=1; i<=tt; i++)
- {
- for(j=i; j<=t2; j++)
- {
- printf("%d",j);
- if(j!=t2) printf(" ");
- }
- t2--;
- if(i!=tt)
- {
- printf("\n");
- start++;
- }
- else
- {
- t2=tt;
- if(n%2!=0) printf(" %d\n",t2);
- start++;
- }
- if(start==n) return 0;
- }
- if(n%2==0)
- {
- t2++;
- printf("\n");
- }
- start=t2-1;
- if(n%2!=0) t2++;
- for(i=t2; i<=n; i++)
- {
- for(j=i; j>=start; j--)
- {
- if(j>0) printf("%d",j);
- if(j!=start) printf(" ");
- }
- start--;
- printf("\n");
- }
- return 0;
- }
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