fix local nxm search

LdDl · LdDl · commit 2d61de42b1ec · 2023-06-06T15:08:20.000+03:00
diff --git a/bidirectional_ch_n_to_n.go b/bidirectional_ch_n_to_n.go
@@ -30,9 +30,6 @@ func (graph *Graph) initShortestPathManyToMany(endpointCounts [directionsCount]i
 		queues[d] = make([]*vertexDistHeap, endpointCounts[d])
 		for endpointIdx := 0; endpointIdx < endpointCounts[d]; endpointIdx++ {
 			queryDist[d][endpointIdx] = make(map[int64]float64)
-			for i := range queryDist[d][endpointIdx] {
-				queryDist[d][endpointIdx][i] = Infinity
-			}
 			processed[d][endpointIdx] = make(map[int64]bool)
 			queues[d][endpointIdx] = &vertexDistHeap{}
 			heap.Init(queues[d][endpointIdx])
@@ -129,8 +126,12 @@ func (graph *Graph) directionalSearchManyToMany(d direction, endpointIndex int,
 			if !ok {
 				localDist = Infinity
 			}
+			localDistTemp, ok := localQueryDist[temp]
+			if !ok {
+				localDistTemp = Infinity
+			}
 			alt := localDist + cost
-			if localQueryDist[temp] > alt {
+			if localDistTemp > alt {
 				localQueryDist[temp] = alt
 				prev[temp] = vertex.id
 				node := &vertexDist{
diff --git a/bidirectional_ch_n_to_n_test.go b/bidirectional_ch_n_to_n_test.go
@@ -33,12 +33,10 @@ func TestManyToManyShortestPath(t *testing.T) {
 	// t.Log("ShortestPathManyToMany returned", ans, path)
 	for sourceIdx := range u {
 		for targetIdx := range v {
-			// @failing
 			if correctPath[sourceIdx][targetIdx] != -2 && len(path[sourceIdx][targetIdx]) != correctPath[sourceIdx][targetIdx] {
 				t.Errorf("Num of vertices in path should be %d, but got %d", correctPath[sourceIdx][targetIdx], len(path[sourceIdx][targetIdx]))
 				return
 			}
-			// @failing
 			if correctAns[sourceIdx][targetIdx] != -2 && math.Abs(ans[sourceIdx][targetIdx]-correctAns[sourceIdx][targetIdx]) > eps {
 				t.Errorf("Cost of path should be %f, but got %f", correctAns[sourceIdx][targetIdx], ans[sourceIdx][targetIdx])
 				return
@@ -197,7 +195,6 @@ func TestManyToManyAlternatives(t *testing.T) {
 		}
 	}
 	correctCost := 4.0
-	// @failing
 	if math.Abs(ans[0][0]-correctCost) > eps {
 		t.Errorf("Cost of path should be %f, but got %f", correctCost, ans[0][0])
 		return
