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