# coding: utf-8
def get_ln_inputs():
    return input().split()


def map_list(fn, xs):
    return list(map(fn, xs))


def get_ln_int_inputs():
    return map_list(int, get_ln_inputs())


def main():
    N, K = get_ln_int_inputs()
    A = list()
    for _ in range(N):
        A.append(get_ln_int_inputs()[0])
    As = sorted(A)[::-1]
    W = 0

    for a in As:
        if W + a > K:
            continue
        W += a

    print(W)
    return


main()