Submission #630919

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Source Code Expand

n=gets.to_i
pt=Array.new(n)
n.times{|i|
    x,y=gets.split(" ").map!(&:to_i);
    pt[i]=[x,y]
}
t=[0,0,0]
d=[0,0,0]
(0..(n-1)).to_a.combination(3).each{|e|
    x1=pt[e[0]][0]-pt[e[1]][0]
    y1=pt[e[0]][1]-pt[e[1]][1]
    x2=pt[e[1]][0]-pt[e[2]][0]
    y2=pt[e[1]][1]-pt[e[2]][1]
    x3=pt[e[2]][0]-pt[e[0]][0]
    y3=pt[e[2]][1]-pt[e[0]][1]
    d[0]=x1*x2+y1*y2
    d[1]=x2*x3+y2*y3
    d[2]=x3*x1+y3*y1
    if d.include?(0)
        t[1]+=1 
    elsif d.inject{|s,e|(s&&((s>0)^(e>0))) ? nil : s}
        t[0]+=1
    else
        t[2]+=1
    end
}

puts t*" "

Submission Info

Compile Error

./Main.rb:22: warning: shadowing outer local variable - e

Judge Result