#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<string.h>
int main()
{
	char str[30000]={'0'}, minstart = 0, maxstart = 0,num=0;
	int max = 0, min =100,sum=0;
	gets(str);
	int len = strlen(str);
	for (int i = 0; i < len; i++) {
		if (str[i] != ' ' && str[i] != ',' && str[i] != '.') {
			sum++;
			if (i == len - 1) {
				if (sum > max) {
					max = sum;
					maxstart = i - sum+1;
				}
				if (sum < min) {
					min = sum;
					minstart = i - sum+1;
				}
				sum = 0;
			}
		}
		else if (sum == 0) {
			num++;
		}
		else {
			if (sum > max) {
				max = sum;
				maxstart = i - sum;
			}
		    if(sum<min){
				min = sum;
				minstart = i - sum;
			}
			sum = 0;
		}
	}
	for (int i = maxstart; i < maxstart + max; i++) {
		printf("%c", str[i]);
	}
	printf("\n");
	for (int i = minstart; i < minstart + min; i++) {
		printf("%c", str[i]);
	}
	return 0;
}