| # | Problem | Pass Rate (passed user / total user) |
|---|---|---|
| 10741 | The Encoded Word |
|
| 11116 | Palindrome |
|
| 11561 | Point distance |
|
Description
The input is a three-digit integer N that consists of digits 1-9 except 0. The task is to use the following rule to encode the input number:
First digit => even: 'A', odd: 'B'
Second digit => even: 'C', odd: 'D'
Third digit => even: 'E', odd: 'F'
For example, if the input is 489, the output should be ACF because 4 is even, 8 is even, and 9 is odd.
Hints:
1. Given an integer x and two values M and N, we can use the following equation to select one of M and N according to x being even or odd.
y = (x%2)*M + ((x+1)%2)*N;
That is, if x is odd, y will have value M; if x is even, y will get value N.
2. Characters like 'A', 'B', 'C' are constant values. We can use them in computations such as 0*'A' + 1*'B' or 'D' - 'A'.
Input
A three-digit integer consisting of only 1-9 but not 0
Output
The encoded three-letter word.
Note that you do not need to print ‘\n’ at the end of the output.
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Description
The input will be a floating point number X which has 2 digits on the left of the point, and 3 digits on the right of the point. X consists of digits 1-9 except 0.
Interchange the two sides of the point to obtain another floating point number Y.
Finally, compute the sum of X and Y.
Example:
Input: 46.534
after interchanging: 534.46
after summing up: 580.994
Input
Given a floating point number X.
Output
The sum of X and Y.
The answer should be expressed as a floating point number with precision to the third decimal place. For example, 580.994.
Note that you do not need to print ‘\n’ at the end of the output.
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Description
The purpose of programming is to solve complicated problems that humans are not able to solve quickly.
In the xy-coordinate system, there are a given line and a given point on the plane. The task is to print out the square of the shortest distance from the point to the line.
Input
Output
Please output the square of the distance from the point P to the line L with a new line. Note that the answer should be rounded to the second decimal place.
You can use printf(“%.2f\n", your_ans) to print out your answer. Remember that your_ans has to be in double type.