There are some tasks/microservices n1, n2, n3, n4 etc. You will be given a dependency list for eg
[(n1, n2), (n2, n3)] signifying n1 depends on n2 and n2 depends on n3 and so on.

Every task/microservice needs time to execute. The time for task/microservice is t1, t2, t3, t3 for n1, n2, n3 and n4 respectively.

The task is to find the minimum time to complete all tasks.

what should be the solution with time complexity.
can someone plz share a code.