import typing
import sys

# import re
import math
import collections
# import decimal
import bisect
import itertools
import fractions
# import functools
import copy
import heapq
import decimal
# import statistics
import queue
# import numpy as np

# sys.setrecursionlimit(10000001)
INF = 10 ** 20
MOD = 10 ** 9 + 7
# MOD = 998244353


def ni(): return int(sys.stdin.buffer.readline())
def ns(): return map(int, sys.stdin.buffer.readline().split())
def na(): return list(map(int, sys.stdin.buffer.readline().split()))


# ===CODE===

def main():
    l1 = na()
    l2 = na()
    flg1 = l1 == l2
    l1.sort()
    l2.sort()
    flg2 = l1 == l2
    flg3 = len(set(l1)) == 3

    if flg2:
        print("Yes")
        print(2)
    else:
        print("No")


if __name__ == '__main__':
    main()