Problem Statement

Given eight integers S_1,S_2,\dots, and S_8, print Yes if they satisfy all of the following three conditions, and No otherwise.

• The sequence (S_1,S_2,\dots,S_8) is monotonically non-decreasing. In other words, S_1 \leq S_2 \leq \dots \leq S_8.
• S_1,S_2,\dots, and S_8 are all between 100 and 675, inclusive.
• S_1,S_2,\dots, and S_8 are all multiples of 25.

Constraints

• 0\leq S_i \leq 1000
• All input values are integers.

Sample Input 1

125 175 250 300 400 525 600 650

Sample Output 1

Yes

They satisfy all of the three conditions.

Sample Input 2

100 250 300 400 325 575 625 675

Sample Output 2

No

They violate the first condition because S_4 > S_5.

Sample Input 3

0 23 24 145 301 413 631 632

Sample Output 3

No

They violate the second and third conditions.

Problem Statement

You are given a string S consisting of lowercase English letters.
If a appears in S, print the last index at which it appears; otherwise, print -1. (The index starts at 1.)

Constraints

• S is a string of length between 1 and 100 (inclusive) consisting of lowercase English letters.

Sample Input 1

abcdaxayz

Sample Output 1

7

a appears three times in S. The last occurrence is at index 7, so you should print 7.

Sample Input 2

bcbbbz

Sample Output 2

-1

a does not appear in S, so you should print -1.

Sample Input 3

aaaaa

Sample Output 3

5

Problem Statement

In an xy-coordinate plane whose x-axis is oriented to the right and whose y-axis is oriented upwards, rotate a point (a, b) around the origin d degrees counterclockwise and find the new coordinates of the point.

Constraints

• -1000 \leq a,b \leq 1000
• 1 \leq d \leq 360
• All values in input are integers.

Sample Input 1

2 2 180

Sample Output 1

-2 -2

When (2, 2) is rotated around the origin 180 degrees counterclockwise, it becomes the symmetric point of (2, 2) with respect to the origin, which is (-2, -2).

Sample Input 2

5 0 120

Sample Output 2

-2.49999999999999911182 4.33012701892219364908

When (5, 0) is rotated around the origin 120 degrees counterclockwise, it becomes (-\frac {5}{2} , \frac {5\sqrt{3}}{2}).
This sample output does not precisely match these values, but the errors are small enough to be considered correct.

Sample Input 3

0 0 11

Sample Output 3

0.00000000000000000000 0.00000000000000000000

Since (a, b) is the origin (the center of rotation), a rotation does not change its coordinates.

Sample Input 4

15 5 360

Sample Output 4

15.00000000000000177636 4.99999999999999555911

A 360-degree rotation does not change the coordinates of a point.

Sample Input 5

-505 191 278

Sample Output 5

118.85878514480690171240 526.66743699786547949770

Problem Statement

Print the color of the cell at the R-th row from the top and C-th column from the left in the following grid with 15 vertical rows and 15 horizontal columns.

Constraints

• 1 \leq R, C \leq 15
• R and C are integers.

Sample Input 1

3 5

Sample Output 1

black

In the grid above, the cell at the 3-rd row from the top and 5-th column from the left is black. Thus, black should be printed.

Sample Input 2

4 5

Sample Output 2

white

In the grid above, the cell at the 4-th row from the top and 5-th column from the left is white. Thus, white should be printed.

Problem Statement

You are given a grid of H rows and W columns.
Let (i,j) denote the cell at row i (1 \leq i \leq H) from the top and column j (1 \leq j \leq W) from the left.
The state of the grid is represented by H strings S_1, S_2, \ldots, S_H, each of length W, as follows:

• If the j-th character of S_i is #, cell (i,j) is painted black.
• If the j-th character of S_i is ., cell (i,j) is painted white.
• If the j-th character of S_i is ?, cell (i,j) is not yet painted.

Takahashi wants to paint each not-yet-painted cell white or black so that all the black cells form a rectangle.
More precisely, he wants there to exist a quadruple of integers (a,b,c,d) (1 \leq a \leq b \leq H, 1 \leq c \leq d \leq W) such that:

For each cell (i,j) (1 \leq i \leq H, 1 \leq j \leq W), if a \leq i \leq b and c \leq j \leq d, the cell is black;
otherwise, the cell is white.

Determine whether this is possible.

Constraints

• 1 \leq H, W \leq 1000
• H and W are integers.
• Each S_i is a string of length W consisting of #, ., ?.
• There is at least one cell that is already painted black.

Sample Input 1

3 5
.#?#.
.?#?.
?...?

Sample Output 1

Yes

The grid is in the following state. ? indicates a cell that are not yet painted.

By painting cells (1,3), (2,2), and (2,4) black and cells (3,1) and (3,5) white, the black cells can form a rectangle as follows:

Therefore, print Yes.

Sample Input 2

3 3
?##
#.#
##?

Sample Output 2

No

To form a rectangle with all black cells, you would need to paint cell (2,2) black, but it is already painted white.
Therefore, it is impossible to make all black cells form a rectangle, so print No.

Sample Input 3

1 1
#

Sample Output 3

Yes