int main(){
	char dc[4000];
	int i, j, k=1, len, zms[201], max=0, min=0, maxnum, minnum;
	gets(dc);
	len=strlen(dc);
	for(i=0;i<len;i++){
		if(dc[i]==' '||dc[i]==','){
			dc[i]=0;
			zms[k]=i;
			k++;
		}
	}
	zms[k]=len;
	maxnum=zms[1];
	minnum=zms[1];
	for(j=1;j<k;j++){
		if(zms[j+1]-zms[j]-1>maxnum){
			maxnum=zms[j+1]-zms[j]-1;
			max=zms[j]+1;
		}
	}
	for(j=1;j<k;j++){
		if(zms[j+1]-zms[j]-1<minnum&&zms[j+1]-zms[j]-1>0){
			minnum=zms[j+1]-zms[j]-1;
			min=zms[j]+1;
		}
	}
	printf("%s\n", &dc[max]);
	printf("%s\n", &dc[min]);
	return 0;
}
