func seed(r *ring.Ring) *ring.Ring {
if r.Value == nil {
r.Value = new(bucket)
} else {
r.Value.(*bucket).Reset()
}
return r
}
func (s *CJKBigramFilter) flush(r *ring.Ring, itemsInRing *int, pos int) *analysis.Token {
var rv *analysis.Token
if *itemsInRing == 1 {
rv = s.buildUnigram(r, itemsInRing, pos)
}
r.Value = nil
*itemsInRing = 0
return rv
}
func (m *MessageBuffer) AddMessage(channel, message string) {
if int32(m.buffer.Len()) >= m.maxsize { // buffer full?
m.lostmsgs += 1
return
}
var elem *ring.Ring = ring.New(1)
var msg *bufferedMessage = &bufferedMessage{
Channel: channel,
Message: message,
}
elem.Value = msg
// Add element elem to buffer.
m.buffer.Prev().Link(elem)
}
func main() {
var n, m int
f, _ := os.Create("yes.pprof")
pprof.StartCPUProfile(f)
defer pprof.StopCPUProfile()
fmt.Scan(&n)
fmt.Scan(&m)
bucket2number := make(map[int]*ring.Ring)
number2bucket := map[int]int{0: 0, n - 1: n - 1}
bucketlen := map[int]int{0: 1, n - 1: 1}
bucket2number[0] = ring.New(1)
bucket2number[0].Value = 0
bucket2number[n-1] = ring.New(1)
bucket2number[n-1].Value = n - 1
var a, b int
var la, lb *ring.Ring
var debug = false
for i := 0; i <= m; i++ {
fmt.Scan(&a, &b)
ba, ok := number2bucket[a]
if !ok {
number2bucket[a] = a
bucketlen[a] = 1
ba = a
la = ring.New(1)
la.Value = a
bucket2number[ba] = la
} else {
la = bucket2number[ba]
}
bb, ok := number2bucket[b]
if !ok {
number2bucket[b] = b
bucketlen[b] = 1
bb = b
lb = ring.New(1)
lb.Value = b
bucket2number[bb] = lb
} else {
lb = bucket2number[bb]
}
if ba != bb {
// Not connected yet
if bucketlen[ba] < bucketlen[bb] {
la, lb = lb, la
ba, bb = bb, ba
}
for j := 0; j < bucketlen[bb]; j++ {
number2bucket[lb.Value.(int)] = ba
lb = lb.Next()
}
la.Link(lb)
bucketlen[ba] += bucketlen[bb]
delete(bucket2number, bb)
if number2bucket[0] == number2bucket[n-1] {
fmt.Printf("Connected at %d\n", i)
return
}
}
if debug {
fmt.Printf("%d -> %d\n", a, b)
fmt.Print("Bucket2Number\n")
for k, v := range bucket2number {
fmt.Print(k)
v.Do(
func(x interface{}) {
fmt.Printf(" %d", x.(int))
})
fmt.Println()
}
fmt.Print("Number2Bucket\n")
for k, v := range number2bucket {
fmt.Printf("%d: %d\n", k, v)
}
}
}
fmt.Println("Not connected")
}