add new solutions

solutions/17/q1700/solution.go

@@ -0,0 +1,18 @@
+package q1700
+
+func countStudents(students []int, sandwiches []int) int {
+	wants := [2]int{}
+	for _, w := range students {
+		wants[w]++
+	}
+
+	for _, s := range sandwiches {
+		if wants[s] == 0 {
+			return wants[0] + wants[1]
+		}
+		wants[s]--
+	}
+	return 0
+}
+
+var _ = countStudents