![]() ![]() The hieroglyphic system for Egyptian numerals, like the later Roman numerals, descended from tally marks used for counting. These artifacts do not always reveal the specific process used for solving problems, but the characteristics of the particular numeral system strongly influence the complexity of the methods. The earliest written records indicate the Egyptians and Babylonians used all the elementary arithmetic operations: addition, subtraction, multiplication, and division, as early as 2000 BC. Print one blank line after each test case, including the last one.The prehistory of arithmetic is limited to a small number of artifacts, which may indicate the conception of addition and subtraction, the best-known being the Ishango bone from central Africa, dating from somewhere between 20,000 and 18,000 BC, although its interpretation is disputed. The line can be neither longer nor shorter than specified. It ends in the column where is the rightmost digit of that two numbers. That means it begins in the same column where the leftmost digit or operator of that two lines (one below and one above) is. The horizontal line is always as long as necessary to reach the left and right end of both numbers (and operators) directly below and above it. There must be minimal number of spaces on the beginning of lines, with respect to other constraints. If the second number has more than one digit, print another horizontal line under the partial results, and then print the sum of them. If a particular digit is zero, the product has exactly one digit - zero. No product may begin with any additional zeros. That means the last digit of the partial product must be in the same column as the digit of the second number. Each partial result should be aligned with the corresponding digit. ![]() Put the partial results one below the other, starting with the product of the last digit of the second number. After the second number, there must be a horizontal line made of dashes (-).įor each addition or subtraction, put the result right below the horizontal line, with last digit aligned to the last digit of both operands.įor each multiplication, multiply the first number by each digit of the second number. Put the operator right in front of the first digit of the second number. No number will begin with zero.įor each expression, print two lines with two given numbers, the second number below the first one, last digits (representing unities) must be aligned in the same column. If the operation is subtraction, the second number is always lower than the first one. Each expression consists of a single line containing a positive integer number, an operator (one of +, - and *) and the second positive integer number. ![]() It stands for the number of expressions to follow. There is a single positive integer T on the first line of input (equal to about 1000). Multiplication is a little bit more complex: first of all, we make a partial result for every digit of one of the numbers, and then sum the results together. With addition and subtraction, the numbers are written below each other. Given two numbers and the requested operation, you are to compute the result and print it in the form specified below. Your task is to write the core part of this calculator. To make the output look better, the result is formated the same way as is it usually used with manual calculations. One part of the new WAP portal is also a calculator computing expressions with very long numbers. ![]()
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