#include <stdio.h>

int main()
{
	int x,y=0,brojac=1,max=1;
	while(1)
	{
		scanf("%d",&x);
		if(x==0)
			break;
		if(x==y)
			brojac++;
		else brojac = 1;
		y = x;
		if(brojac>max)
			max = brojac;
	}
	printf("najduzi niz: %d\n",max);
	return 0;
}