#include <stdio.h>
int main(){
    int n,i;
    scanf("%d",&n);
    //if(n%2==0)
    //printf("Invalid Input");
    //if(n<0)
    //printf("Invalid Input");
    for (i=1;i*i<=n;i++)
    if (n%2!=0)
    printf("%d",i*'*');
    printf(" ")
    else
    printf("Invalid Input");
    return 0;
}