Maximization Assignment Problem Hungarian

There are problems where certain facilities have to be assigned to a number of jobs, so as to maximize the overall performance of the assignment.

The Hungarian Method can also solve such assignment problems, as it is easy to obtain an equivalent minimization problem by converting every number in the matrix to an opportunity loss.

The conversion is accomplished by subtracting all the elements of the given matrix from the highest element. It turns out that minimizing opportunity loss produces the same assignment solution as the original maximization problem.

Example: Maximization In An Assignment Problem

At the head office of there are five registration counters. Five persons are available for service.

Counter A B C D E
1 30 37 40 28 40
2 40 24 27 21 36
3 40 32 33 30 35
4 25 38 40 36 36
5 29 62 41 34 39

How should the counters be assigned to persons so as to maximize the profit?


Here, the highest value is 62. So we subtract each value from 62. The conversion is shown in the following table.


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Counter A B C D E
1 32 25 22 34 22
2 22 38 35 41 26
3 22 30 29 32 27
4 37 24 22 26 26
5 33 0 21 28 23

Now the above problem can be easily solved by Hungarian method. After applying steps 1 to 3 of the Hungarian method, we get the following matrix.


Draw the minimum number of vertical and horizontal lines necessary to cover all the zeros in the reduced matrix.


Select the smallest element from all the uncovered elements, i.e., 4. Subtract this element from all the uncovered elements and add it to the elements, which lie at the intersection of two lines. Thus, we obtain another reduced matrix for fresh assignment. Repeating step 3, we obtain a solution which is shown in the following table.

Final Table: Maximization Problem

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The total cost of assignment = 1C + 2E + 3A + 4D + 5B

Substituting values from original table:
40 + 36 + 40 + 36 + 62 = 214.

В кабине стоял какой-то мужчина. Беккер успел заметить лишь очки в железной оправе. Мужчина поднес к носу платок. Беккер вежливо улыбнулся и вышел на улицу - в душную севильскую ночь. ГЛАВА 42 Вернувшись в комнату, Сьюзан, не находя себе места, нервно ходила из угла в угол, терзаясь мыслью о том, что так и не выбрала момент, чтобы разоблачить Хейла.

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