#include <cstdio>

#define inFile	"scmax.in"
#define outFile	"scmax.out"

int n, size, sol[100001];

void Solve() {
	int x;
	scanf("%d %d", &n, &x);
	size = 1;
	sol[1] = x;

	for(int i = 2; i <= n; i++) {
		scanf("%d", &x);
		if(x <= sol[size])
			sol[size] = x;
		else 
			sol[++size] = x;
	}
}

void Print() {
	printf("%d\n", size);
	for(int i = 1; i <= size; i++) {
		printf("%d ", sol[i]);
	}
}

int main() {
	freopen(inFile, "r", stdin);
	freopen(outFile, "w", stdout);

	Solve();
	Print();

	return 0;
}