1049. Counting Ones (30)

1049. Counting Ones (30)

#include 
class CA
{
public:
	void run();
	int n,num;
};
void CA::run()
{
	scanf("%d",&n);
	int r,x,y,m;
	num=0;
	r=1;x=n;
	while(x>0)
	{
		m=x%10;
		y=n%r;
		x=x/10;
		if(m>1)
		{
			num+=(x+1)*r;
		}
		else if(m==1)
		{
			num+=x*r+y+1;
		}
		else if(m<1)
		{
			num+=x*r;
		}
		r*=10;
	}
	printf("%d\n",num);
}


int main()
{
	
//	freopen("test.in","r",stdin);
	CA *a=new CA;
	a->run();
	return 0;
}