from sys import stdin, stdout
from math import sqrt, pi, acos, gcd, atan2, cos, sin, factorial, log10
# from matplotlib import mlab
# from matplotlib import pylab
from decimal import Decimal
from random import randint
# import re
PEPS = 1e-10
INF = float('inf')


def sqr(a):
    return a * a


def dist(a, b = (0, 0)):
    return sqrt(sqr(a[0] - b[0]) + sqr(a[1] - b[1]))


def s_dist(a, b = (0, 0)):
    return (sqr(a[0] - b[0]) + sqr(a[1] - b[1]))


def dist3(a, b = (0, 0, 0)):
    return sqrt(sqr(a[0] - b[0]) + sqr(a[1] - b[1]) + sqr(a[2] - b[2]))


def s_dist3(a, b = (0, 0, 0)):
    return (sqr(a[0] - b[0]) + sqr(a[1] - b[1]) + sqr(a[2] - b[2]))


def trans(p, al):
    return (p[0] * cos(al) + p[1] * sin(al), - p[0] * sin(al) + p[1] * cos(al))


def get_angle(a, b, c):
    cos_al = (sqr(a) + sqr(b) - sqr(c)) / (2 * a * b)
    return acos(cos_al)


def write_float(ans):
    stdout.write(str('%.13f' % ans) + '\n')


def get_hight(pt1, pt2, pt3):
    a = (pt2[0] - pt1[0], pt2[1] - pt1[1])
    b = (pt3[0] - pt1[0], pt3[1] - pt1[1])
    return abs(a[0] * b[1] - a[1] * b[0]) / dist(pt1, pt2)


def get_square(pt1, pt2, pt3):
    a = (pt2[0] - pt1[0], pt2[1] - pt1[1])
    b = (pt3[0] - pt2[0], pt3[1] - pt2[1])
    return (a[0] * b[-1] - a[1] * b[0]) / 2


def sign(v):
    if v > 0:
        return 1
    elif v < 0:
        return -1
    else:
        return 0


def inn(pt, triangle):
    signs = set()
    signs.add(sign(get_square(triangle[0], triangle[1], pt)))
    signs.add(sign(get_square(triangle[1], triangle[2], pt)))
    signs.add(sign(get_square(triangle[2], triangle[0], pt)))
    return len(signs) == 1


def inter_in(a, b):
    return dist((a[0], a[1]), (b[0], b[1])) < a[-1] + b[-1]


def inter_in3(a, b):
    return dist3(a[:-1], b[:-1]) < a[-1] + b[-1]


def shift(what, wth):
    return (what[0] - wth[0], what[1] - wth[1])


a = sorted(list(map(int, stdin.readline().split())))
stdout.write(['No', 'Yes'][a[0] == a[1] == a[2]])

### FIXED CODE ###

from sys import stdin, stdout
# from math import sqrt, pi, acos, gcd, atan2, cos, sin, factorial, log10
# # from matplotlib import mlab
# # from matplotlib import pylab
# # from decimal import Decimal
# # from random import randint
# # import re
# PEPS = 1e-10
# INF = float('inf')
# 
# 
# def sqr(a):
#     return a * a
# 
# 
# def dist(a, b = (0, 0)):
#     return sqrt(sqr(a[0] - b[0]) + sqr(a[1] - b[1]))
# 
# 
# def s_dist(a, b = (0, 0)):
#     return (sqr(a[0] - b[0]) + sqr(a[1] - b[1]))
# 
# 
# def dist3(a, b = (0, 0, 0)):
#     return sqrt(sqr(a[0] - b[0]) + sqr(a[1] - b[1]) + sqr(a[2] - b[2]))
# 
# 
# def s_dist3(a, b = (0, 0, 0)):
#     return (sqr(a[0] - b[0]) + sqr(a[1] - b[1]) + sqr(a[2] - b[2]))
# 
# 
# def trans(p, al):
#     return (p[0] * cos(al) + p[1] * sin(al), - p[0] * sin(al) + p[1] * cos(al))
# 
# 
# def get_angle(a, b, c):
#     cos_al = (sqr(a) + sqr(b) - sqr(c)) / (2 * a * b)
#     return acos(cos_al)
# 
# 
# def write_float(ans):
#     stdout.write(str('%.13f' % ans) + '\n')
# 
# 
# def get_hight(pt1, pt2, pt3):
#     a = (pt2[0] - pt1[0], pt2[1] - pt1[1])
#     b = (pt3[0] - pt1[0], pt3[1] - pt1[1])
#     return abs(a[0] * b[1] - a[1] * b[0]) / dist(pt1, pt2)
# 
# 
# def get_square(pt1, pt2, pt3):
#     a = (pt2[0] - pt1[0], pt2[1] - pt1[1])
#     b = (pt3[0] - pt2[0], pt3[1] - pt2[1])
#     return (a[0] * b[-1] - a[1] * b[0]) / 2
# 
# 
# def sign(v):
#     if v > 0:
#         return 1
#     elif v < 0:
#         return -1
#     else:
#         return 0
# 
# 
# def inn(pt, triangle):
#     signs = set()
#     signs.add(sign(get_square(triangle[0], triangle[1], pt)))
#     signs.add(sign(get_square(triangle[1], triangle[2], pt)))
#     signs.add(sign(get_square(triangle[2], triangle[0], pt)))
#     return len(signs) == 1
# 
# 
# def inter_in(a, b):
#     return dist((a[0], a[1]), (b[0], b[1])) < a[-1] + b[-1]
# 
# 
# def inter_in3(a, b):
#     return dist3(a[:-1], b[:-1]) < a[-1] + b[-1]
# 
# 
# def shift(what, wth):
#     return (what[0] - wth[0], what[1] - wth[1])
# 

a = list(map(int, stdin.readline().split()))
stdout.write(['No', 'Yes'][a[0] == a[1] == a[2]])