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+// 2187. Minimum Time to Complete Trips
+#include "leetcode.h"
+
+/*
+ * given array 'time' where 'time[i]' denotes the time taken by the 'i'th bus to
+ * complete one trip. each bus can make multiple trips successively; that is,
+ * the next trip can start immediately after completing the current trip. also,
+ * each bus operates independently; that is, the trips of one bus do not
+ * influence the trips of any other bus. also given an integer 'totalTrips',
+ * which denotes the number of trips all buses should make in total. return the
+ * minimum time required to complete all trips.
+ */
+
+class Solution {
+public:
+ long long minimumTime(vector<int> &time, int totalTrips) {
+ long long l = 0, r = LLONG_MAX / time.size();
+ while (l < r) {
+ long long m = (l + r) / 2, trips = 0;
+ for (int t : time)
+ trips += m / t;
+ if (trips < totalTrips)
+ l = m + 1;
+ else
+ r = m;
+ }
+ return l;
+ }
+};
+
+int main() {
+ Solution obj;
+ vector<int> t1 = {1, 2, 3}, t2 = {2};
+ printf("%lld\n", obj.minimumTime(t1, 5)); // expect: 3
+ printf("%lld\n", obj.minimumTime(t2, 1)); // expect: 2
+}