View Code of Problem 69

#include<stdio.h>
#include<math.h>
int main()
{
	int n,i,j;
	scanf("%d",&n);
	if(n<1)
	printf("%d",n);
	if(n>=1&&n<10)
	printf("%d",2*n-1);
	if(n>=10)
	printf("%d",3*n-11);
}