public int f(int A_0)
{
try
{
if (!this.i.ContainsKey(A_0))
{
return(0);
}
cv cv = this.i[A_0];
if (cv.f() == 0)
{
return(0);
}
int key = cv.f();
int num2 = A_0;
int num3 = 0;
while (key != 0)
{
if (key == this.o)
{
return(this.o);
}
num3++;
if ((num3 > 20) || (num2 == key))
{
return(num2);
}
num2 = key;
if (this.i.ContainsKey(key))
{
key = this.i[key].f();
}
else
{
key = 0;
}
}
return(num2);
}
catch (Exception)
{
return(0);
}
}
private void a(cv A_0)
{
int key = A_0.f();
if (!this.l.ContainsKey(key))
{
this.l.Add(key, new List <cv>());
}
if (!this.l[key].Contains(A_0))
{
this.l[key].Add(A_0);
}
}
private void b(cv A_0)
{
int key = A_0.f();
if (this.l.ContainsKey(key) && this.l[key].Contains(A_0))
{
this.l[key].Remove(A_0);
if (this.l[key].Count == 0)
{
this.l.Remove(key);
}
}
}