diff --git a/heap.go b/heap.go
index bc5d2a7..fadd8a8 100644
--- a/heap.go
+++ b/heap.go
@@ -1,3 +1,4 @@
+// heap
 package BDS
 
 // 大顶堆int
@@ -9,6 +10,8 @@ type IntHeap []int
 // 专门为矩阵设计的多路归并思想的堆结构。
 type IntHeapSpec [][3]int
 
+type IntHeapSpecM [][3]int
+
 func (h IntHeapM) Len() int           { return len(h) }
 func (h IntHeapM) Less(i, j int) bool { return h[i] > h[j] }
 func (h IntHeapM) Swap(i, j int)      { h[i], h[j] = h[j], h[i] }
@@ -69,3 +72,28 @@ func (h *IntHeapSpec) Top() interface{} {
 
 	return (*h)[0]
 }
+
+
+
+func (h IntHeapSpecM) Len() int           { return len(h) }
+func (h IntHeapSpecM) Less(i, j int) bool { return h[i][2] > h[j][2] }
+func (h IntHeapSpecM) Swap(i, j int)      { h[i], h[j] = h[j], h[i] }
+func (h *IntHeapSpecM) Push(x interface{}) {
+	result := x.([3]int)
+	j, y, value := result[0], result[1], result[2]
+	f := [3]int{
+		j, y, value,
+	}
+	*h = append(*h, f)
+}
+func (h *IntHeapSpecM) Pop() interface{} {
+	old := *h
+	n := len(old)
+	x := old[n-1]
+	*h = old[0 : n-1]
+	return x
+}
+func (h *IntHeapSpecM) Top() interface{} {
+
+	return (*h)[0]
+}
\ No newline at end of file