import pygame
import sys

# Initialize Pygame
pygame.init()

# Set the width and height of the screen (Japanese flag dimensions)
width, height = 600, 400
screen = pygame.display.set_mode((width, height))
pygame.display.set_caption("Japanese Flag")

# Define colors
WHITE = (255, 255, 255)
RED = (255, 0, 0)

# Fill the screen with white
screen.fill(WHITE)

# Draw the red circle (Japanese flag)
center = (width // 2, height // 2)
radius = min(width, height) // 3
pygame.draw.circle(screen, RED, center, radius)

# Update the display
pygame.display.flip()

# Main loop
while True:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            sys.exit()