View Code of Problem 69

#include<bits/stdc++.h>
using namespace std;
int main(){
	int x,y=0;
	cin>>x;
	if(x<1)
	y=x;
	else if(x>=1&&x<10)
	y=2*x-1;
	else if(x>=10)
	y=3*x-11;
	cout<<y<<endl;
	return 0;
}