#include<stdio.h>
#include<string.h>

int main()
{
char string[100];// = {'\0'};
int val;
char c = getchar();
int i;
	while(1)
	{
	i = -1;
		while (isspace(c) == 0)
		{
		i ++;
		string[i] = c;
		c = getchar();
		}
	string[i+1] = '\0';
	val=yylex(string);
		while(val >= 1)
		{
			if (val == 256)
			{printf("%s Number\n", string);break;}
			else if (val == 257)
			{printf("%s Invalid\n", string); break;}
			else if (val == 42)
			{printf("%c Operator\n", val); break;}
			else if (val == 43)
			{printf("%c Operator\n", val); break;}
			else if (val == 45)
			{printf("%c Operator\n", val); break;}
			else if (val == 47)
			{printf("%c Operator\n", val); break;}
			else if (val == 61)
			{printf("%c Operator\n", val); break;}
		}
	c = getchar();
	}
return 0;
}


int yylex(char * temp)
{
char check[50];
float num;

check[0]='\0';
	if(strlen(temp)==1)
	{
		if(temp[0]=='+' ||temp[0]=='*' || temp[0]=='-'|| temp[0]==
='/' ||
	temp[0]=='=')
		{return temp[0];}
		if (isdigit(temp[0])) {return 256;}
		if (isalpha(temp[0])) {return 257;}
	}
	if(sscanf(temp, "%f%s", &num, check)==2 && strlen(check)>0)
	{return 257;}
	else if(sscanf(temp, "%f%s", &num, check)==1 && strlen(check)==0)
	{return 256;}
return 257;
}