20241217

# import sys
# from PyQt5.QtWidgets import *
# from PyQt5 import *
# from PyQt5.QtGui import *
# from PyQt5.QtCore import *
# m=0
# m=int(m)
# l=0
# l=int(l)
# o=0
# b=0
# b=int(b)
# def input(n,la1):
#     global m
#     m=m*10
#     m=m+n
#     la1.setText(str(m))
#     la1.repaint()
# def operator(c,la1):
#     global o,m,l,b
#     if b==1:
#         operate(la1)
#     if c=='+':
#         o='+'
#     if c=='-':
#         o='-'
#     if c=='*':
#         o='*'
#     if c=='/':
#         o='/'
#     if l==0:
#       l=m
#       m=0
#     b=1
#     la1.setText(str(m))
#     la1.repaint()
# def clear(la1):
#     global l,m
#     l=0
#     m=0
#     la1.setText(str(m))
#     la1.repaint()
# def operate(la1):
#     global l,m,o,b
#     a=0
#     a=int(a)
#     err = 0
#     err = int(a)
#     if o=='+':
#         a=l+m
#     if o=='-':
#         a=l-m
#     if o=='*':
#         a=l*m
#     if o=='/':
#         if m==0:
#             err=1
#         else:
#             a=l/m
#     l=a
#     m=0
#     b=0
#     if err==1:
#         la1.setText("ERROR 140: ANSWER_UNDEFINED;INPUTS_CLEARED")
#         la1.repaint()
#     else:
#         la1.setText(str(a))
#         la1.repaint()
# class MyApp(QWidget):
#     global m
#     def __init__(self):
#         super().__init__()
#     def initUI(self):
#         lbl1 = QLabel('0', self)
#
#         btn1 = QPushButton('&1', self)
#         btn1.clicked.connect(lambda: input(1,lbl1))
#         btn2 = QPushButton('&2', self)
#         btn2.clicked.connect(lambda: input(2, lbl1))
#         btn3 = QPushButton('&3', self)
#         btn3.clicked.connect(lambda: input(3, lbl1))
#         btnp=QPushButton('&+',self)
#         btnp.clicked.connect(lambda: operator("+",lbl1))
#         btn4 = QPushButton('&4', self)
#         btn4.clicked.connect(lambda: input(4, lbl1))
#         btn5 = QPushButton('&5', self)
#         btn5.clicked.connect(lambda: input(5, lbl1))
#         btn6 = QPushButton('&6', self)
#         btn6.clicked.connect(lambda: input(6, lbl1))
#         btnm = QPushButton('&-', self)
#         btnm.clicked.connect(lambda: operator("-", lbl1))
#         btn7 = QPushButton('&7', self)
#         btn7.clicked.connect(lambda: input(7, lbl1))
#         btn8 = QPushButton('&8', self)
#         btn8.clicked.connect(lambda: input(8, lbl1))
#         btn9 = QPushButton('&9', self)
#         btn9.clicked.connect(lambda: input(9, lbl1))
#         btnt = QPushButton('&x', self)
#         btnt.clicked.connect(lambda: operator("*", lbl1))
#         btnc = QPushButton('&C', self)
#         btnc.clicked.connect(lambda: clear(lbl1))
#         btn0 = QPushButton('&0', self)
#         btn0.clicked.connect(lambda: input(0, lbl1))
#         btnd = QPushButton('&÷', self)
#         btnd.clicked.connect(lambda: operator("/", lbl1))
#         btne = QPushButton('&=', self)
#         btne.clicked.connect(lambda: operate(lbl1))
#         hbox = QHBoxLayout()
#         hbox.addStretch(1)
#         hbox.addWidget(lbl1)
#         hbox.addStretch(0)
#         hboxr1=QHBoxLayout()
#         hboxr1.addStretch(1)
#         hboxr1.addWidget(btn1)
#         hboxr1.addWidget(btn2)
#         hboxr1.addWidget(btn3)
#         hboxr1.addWidget(btnp)
#         hboxr1.addStretch(1)
#         hboxr2 = QHBoxLayout()
#         hboxr2.addStretch(1)
#         hboxr2.addWidget(btn4)
#         hboxr2.addWidget(btn5)
#         hboxr2.addWidget(btn6)
#         hboxr2.addWidget(btnm)
#         hboxr2.addStretch(1)
#
#         hboxr3 = QHBoxLayout()
#         hboxr3.addStretch(1)
#         hboxr3.addWidget(btn7)
#         hboxr3.addWidget(btn8)
#         hboxr3.addWidget(btn9)
#         hboxr3.addWidget(btnt)
#         hboxr3.addStretch(1)
#         hboxr4 = QHBoxLayout()
#         hboxr4.addStretch(1)
#         hboxr4.addWidget(btnc)
#         hboxr4.addWidget(btn0)
#         hboxr4.addWidget(btnd)
#         hboxr4.addWidget(btne)
#         hboxr4.addStretch(1)
#         vbox = QVBoxLayout()
#         vbox.addWidget(lbl1)
#         vbox.addStretch(1)
#         vbox.addLayout(hboxr1)
#         vbox.addLayout(hboxr2)
#         vbox.addLayout(hboxr3)
#         vbox.addLayout(hboxr4)
#         vbox.addStretch(2)
#
#         lbl1.setStyleSheet("color: green;"
#                               "border-style: solid;"
#                               "border-width: 1px;"
#                               "border-color: #0000CD;"
#                               "border-radius: 10px")
#         btnp.setStyleSheet("color: black;"
#                            "background-color: #FF8C00")
#         btnm.setStyleSheet("color: black;"
#                            "background-color: #FF8C00")
#         btnt.setStyleSheet("color: black;"
#                            "background-color: #FF8C00")
#         btnd.setStyleSheet("color: black;"
#                            "background-color: #FF8C00")
#         btnc.setStyleSheet("color: black;"
#                            "background-color: #FFD700")
#         btne.setStyleSheet("color: white;"
#                            "background-color: #4169E1")
#         self.setLayout(vbox)
#         self.setGeometry(300, 300, 300, 200)
#         self.setWindowTitle('Calculator')
#         self.show()
# if __name__ == '__main__':
#     app = QApplication(sys.argv)
#     ex = MyApp()
#     ex.initUI()
#     sys.exit(app.exec_())
# a=[]
# q=int(0)
# def dfs(x,y,c):
#     global a
#
#     if x<0 or y<0 or x>=7 or y>=7 or a[x][y]!=c:
#         return 0
#     a[x][y] = 0
#     # print(x,y)
#     return dfs(x-1,y,c)+ dfs(x,y-1,c)+dfs(x+1,y,c)+dfs(x,y+1,c)+1
#
# for i in range(7):
#     t=list(map(int,input().split()))
#     a.append(t)
#
# for i in range(7):
#     for j in range(7):
#         if a[i][j]!=0 :
#             if dfs(i, j, a[i][j])>=3 :
#                 q+=1
# print(q)
a=[]
n,m=map(int,input().split())
for i in range(n):
    t=list(map(int,input().split()))
    a.append