#include<stdio.h>
#include<math.h>

void nhap(int &n)
{
	printf("\n nhap vao mot so :  ");
	scanf("%d", &n);
	
	printf("\n");
}

void docmotchuso(int n);
void dochaichuso(int n);
void docbachuso(int n);

void tachso(int n)
{ 
    // vidu 123,456,789 --> co 9 chu so va co 3 cum
    
    int soluongchuso = (int)log10((double)n) + 1;    // == 9
    
    int sodauphay = (soluongchuso - 1) / 3;      // == 2
    
    printf("\nso luong chu so %d la %d", n, soluongchuso);
    
    printf("\n\n");
    
	for(int i = sodauphay ; i >= 0 ; i--)      // bi sai dieu kien bao sao k chay vong lap duoc
	{
		
		int temp = n;
		
		temp /= pow(10.0,(3 * i));   // ==> 123 = 123,456,789 / 10^(3*i)
	
		
		int sochusobientemp = (int)log((double)temp) + 1;     // =3  =2   =1 
		
		if(sochusobientemp = 1)
		{
			docmotchuso(temp);
		}
		
		if(sochusobientemp = 2)
		{
			dochaichuso(temp); 
		}
		
		if(sochusobientemp = 3)
		{
			docbachuso(temp);
		}
		
		
		
		n = n % (int)pow(10.0,(3*i));   // == 456,789
		
		int chusoconlai = (int)log10((double)n) + 1;
		
		if(chusoconlai == 3)     // 123,221
		{
			printf(" nghin ");
		}
		if(chusoconlai == 6)      // 1,123,456
		{
			printf(" trieu ");
		}
		if(chusoconlai == 9)     // 3,345,345,234
		{
			printf(" ty ");
		}
		if(chusoconlai == 12)    // 1,123,123,456,345
		{
			printf(" nghin ");
		}
		
	}
} 




void docmotchuso(int n)
{
	
	int tem = n;
	      if(tem == 1)
		         printf(" mot ");
		    else if(tem == 2)
		         printf(" hai ");
		    else if(tem == 3)
		         printf(" ba ");
		    else  if(tem == 4)
		         printf(" bon ");
		    else if(tem == 5)
		         printf(" nam ");
		    else if(tem ==6)
		         printf(" sau ");
		    else if(tem == 7)
		         printf(" bay ");
		    else if(tem == 8)
		         printf(" tam ");
		    else if(tem == 9)
		         printf(" chin ");
}

void dochaichuso(int n)   // 12  23  35  56
{
	int tem = n;
	
	tem /= 10;       // = 1
	
           	if(tem == 1)
		         printf(" muoi ");
		         
		    else if(tem == 2)
		         printf(" hai muoi ");
		    else if(tem == 3)
		         printf(" ba muoi ");
		    else  if(tem == 4)
		         printf(" bon muoi ");
		    else if(tem == 5)
		         printf(" nam muoi ");
		    else if(tem ==6)
		         printf(" sau muoi ");
		    else if(tem == 7)
		         printf(" bay muoi ");
		    else if(tem == 8)
		         printf(" tam muoi ");
		    else if(tem == 9)
		         printf(" chin muoi ");
		         
	tem = n % 10;      // = 2
	
         	 if(tem == 1)
		         printf(" mot ");
		    else if(tem == 2)
		         printf(" hai ");
		    else if(tem == 3)
		         printf(" ba ");
		    else  if(tem == 4)
		         printf(" bon ");
		    else if(tem == 5)
		         printf(" lam ");
		    else if(tem ==6)
		         printf(" sau ");
		    else if(tem == 7)
		         printf(" bay ");
		    else if(tem == 8)
		         printf(" tam ");
		    else if(tem == 9)
		         printf(" chin ");
  
}



void docbachuso(int n)
{                 //123  213  512 515

    int tem = n;
    
    tem /= 100;   // =1 =2 =5 =3 
    
	        if(tem == 1)
		         printf(" mot tram ");
		    else if(tem == 2)
		         printf(" hai tram ");
		    else if(tem == 3)
		         printf(" ba tram ");
		    else  if(tem == 4)
		         printf(" bon tram ");
		    else if(tem == 5)
		         printf(" nam tram ");
		    else if(tem ==6)
		         printf(" sau tram ");
		    else if(tem == 7)
		         printf(" bay tram ");
		    else if(tem == 8)
		         printf(" tam tram ");
		    else if(tem == 9)
		         printf(" chin tram ");
		         
        int m = n % 100;    // = 23  =13
	
	    dochaichuso(m);
		          
}



int main()
{
	int n;
	nhap(n);
	
	tachso(n);
	
	
	return 0;
}