Task Scheduling

Jhethalal opens a new branch of Gada Electronics and he has $N$ tasks he hired $N$ workers as Nattu Kaka and Bhaga are very busy. We Know the cost of each Worker performing a task. If Every Worker is performing exactly one task. As Jhethalal is Gujarati he wants to spend the minimum amount for all the tasks assigned optimally to each worker. Help Jhethalal to assign the task to each worker and fi