routine

26/03/1582.go

@@ -0,0 +1,28 @@
+package A
+
+func numSpecial(mat [][]int) int {
+	res := 0
+	x := make(map[int]int)
+	y := make(map[int]int)
+	for i, row := range mat {
+		for j, v := range row {
+			if v == 0 {
+				continue
+			}
+			x[i]++
+			y[j]++
+		}
+	}
+	for i, row := range mat {
+		for j, v := range row {
+			if v == 0 {
+				continue
+			}
+			if x[i] == 1 && y[j] == 1 {
+				res++
+			}
+
+		}
+	}
+	return res
+}