diyiti

#include<stdio.h>
int main(void)
{
	int x,y;

	scanf("%d",&x);
	if(x<1){
		y=x;
	}
	else if((x>=1)||(x<10)){
		y=2*x-1;
	}
	else{
		y=3*x-11;
	}
	printf("=%.2d\n",x,y);

	return 0;
}