## Codeforces Round #760 Trader Problem Solution (Java/C++)

Solution: First, we can directly consider all items together. Let's consider the following example (I modified it a little bit based on the sample data):…

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## codeforces

Solutions for Codeforce。Include Div2 and Div3. Include Div1 ABC(<2500) also.

Solution: First, we can directly consider all items together. Let's consider the following example (I modified it a little bit based on the sample data):…

A. Life of a Flower Solution: Just simulate according to the description of the problem. Code: Java C++…

A. Find Array Solution: Obviously, when x>0, x cannot be divisible by x+1. Therefore, we can set a[i]=a[i-1]+1. Code: Java C++…

Solution: First of all, we need to notice that after the domino is painted, there are actually only 4 states: BW, WB, WW, BB.…

A. Long Comparison Solution: First, we can compare the digits of x. If the digits are different, we will continue to multiply the number with less digits by 10 until the digits are the same.…

Solution: First, we consider what options are available to meet the conditions. Obviously [0, 1, 2, 3, 4, 5] is eligible, because for any i, x[i]-MEX(x[1],..., x[i])=-1.…

Solution: We first consider how to construct an array A that matches the input.…

A. Make Even Solution: Obviously, if there is no even number, -1 is output. If the last digit itself is an even number, 0 is output. If the first digit is an even number, 1 is output. Otherwise, output 2.…