Submission #1996317

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Source Code Expand

n,m=gets.split
n=n.to_i
m=m.to_i

arr=Array.new(n,0)

m.times{
    
    a,b=gets.split
    a=a.to_i
    b=b.to_i
    arr[a-1]+=1
    arr[b-1]+=1
}

i=0
n.times{
   if arr[i]%2==1
       puts "NO"
       exit
   else
       i+=1
   end
    
}

puts "YES"

Submission Info

Judge Result