#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>

static FILE* fr, * fw;

// Declaring variables
static int N;
static long long M;
static int* V;
static int B;

// Declaring functions
int quadri(int N, long long M, int* V)
{
	int somma = 0, media = 0;
	for (int i = 0; i < N; i++)
	{
		somma += V[i];
	}
	media = (somma / N) + 1;
	return (M / media) - 1;
}

int main() {
	fr = stdin;
	fw = stdout;

	// Iterators used in for loops
	int i0;

	// Reading input
	fscanf(fr, "%d %lld", &N, &M);
	V = (int*)malloc(N * sizeof(int));
	for (i0 = 0; i0 < N; i0++) {
		fscanf(fr, "%d", &V[i0]);
	}

	// Calling functions
	B = quadri(N, M, V);

	// Writing output
	fprintf(fw, "%d\n", B);

	fclose(fr);
	fclose(fw);
	return 0;
}