View Code of Problem 69

#include<iostream>
#include<cstdio>

int main()
{
	int x, y;
	scanf("%d", &x);
	if(x < 1)
		y = x;
	else if(x < 10)
		y = 2 * x - 1;
	else
		y = 3 * x - 11;
	printf("%d", y);
	return 0;
}