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Uri Online judge - 1007 | Difference | problem solution in c

Timelimit: 1
Read four integer values named A, B, C and D. Calculate and print the difference of product A and B by the product of C and D (A * B - C * D).

Input

The input file contains 4 integer values.

Output



Print DIFERENCA (DIFFERENCE in Portuguese) with all the capital letters, according to the following example, with a blank space before and after the equal signal.


Solution: Click here



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