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Market efficiency involves both the consumption and production sides of the economy. While exchange efficiency focuses on how consumers allocate goods, input efficiency determines how resources like labor and capital are distributed across the production of different goods and services.

A given unit of input, such as labor or capital, can typically be used for only one purpose at a time. The challenge lies in deciding how resources should be distributed. 

For example, how should steel be allocated between automobile manufacturing and infrastructure development? Or how labor should be distributed between the technology and healthcare sectors? These decisions influence input efficiency.

To better understand the concept, economists use the Edgeworth box diagram. However, instead of allocating goods between consumers, it illustrates how two producers distribute shared inputs like labor and capital to optimize resource use. 

The Edgeworth box typically plots labor inputs on the horizontal axis and capital inputs on the vertical axis. The isoquants for each producer indicate different combinations of labor and capital that generate the same level of output.