#include <stdio.h>
#define VELKOST_POLA 50

int main(){
	int results[VELKOST_POLA];
	int max;
	//int value = 0;
	int i = 0;
	int a = 0;
	while(1){
		int value = 0;
		int r = scanf("%d",&value);
		if (r == 1){
			results[i] = value;
			max = results[0];
			if(max < results[i])
				max = results[i];
			i++;
		}else{
			break;
		}
	}	
	return 0;
}