Google Code Jam Qualification Round Q1

# Google Code Jam Qualification Round Q1 - Punched Cards

#### Declaration

This post is released after the end of the Qualification Round of Code Jam.

#### Question

Please refer to: [Code Jam Official Site](https://codingcompetitions.withgoogle.com/codejam/round/0000000000876ff1/0000000000a4621b)

#### Solution

##### Idea

1. Create a 2D array to store the output drawing.
- - May reduce the overhead time of calling `print` separately.
- - Easier to manipulate the output drawing.

2. Print out the array.

##### Code

1\. Define a function to `Create a 2D array to store the output drawing`:
```python
def create_card(n_row,n_col):
    result_card = []
    #declare card in "."
    for dummy in range(2*n_row+1):
        result_card.append(["."]*(2*n_col+1))
    #replace "." by desired symbol
    for i in range(2*n_row+1):
        for j in range(2*n_col+1):
            if i < 2 and j < 2:
                continue
            if i%2 == 0 and j%2 == 0:
                result_card[i][j] = "+"
            if i%2 == 0 and j%2 != 0:
                result_card[i][j] = "-"
            if i%2 != 0 and j%2 == 0:
                result_card[i][j] = "|"
    return result_card
```
2\. Define a function to `Print out the array`:
```python
def print_card(card_array):
    print("\n".join(["".join(row) for row in card_array]))
```

3\. Necessary IO:
```python
T = int(input()) 
if T < 1 or T > 81:
    print("Error Input")
    exit()
for i in range(T):
    line_input = input()
    R, C = [int(i) for i in line_input.split(" ")]
    if ( R < 2 or R > 10 ) or ( C < 2 or C > 10 ):
        print("Error Input")
        exit()
    print(f"Case #{i+1}:")
    print_card(create_card(R,C))
```

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