#include <stdio.h>

#define MAX 20

int isNumber(char str[]);

int main(void){
    char str[MAX];

    while(fgets(str,MAX,stdin)){
        printf("%s\n",isNumber(str)?"number":"string");
    }

    return 0;
}

int isNumber(char str[]){
    int i;
    char c=0;
    return (sscanf(str,"%d%[^\n]",&i,&c)==1)&&(c==0);
}