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