Введение ---> Крест

import pygame

x = int(input())
y = int(input())
size = width, height = x, y
sc = pygame.display.set_mode(size)

pygame.draw.line(sc, (255, 255, 255),
                 [0, 0],
                 [x, y],
                 5)
pygame.draw.line(sc, (255, 255, 255),
                 [x, 0],
                 [0, y],
                 5)
pygame.display.flip()
while pygame.event.wait().type != pygame.QUIT:
    pass
pygame.quit()