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#Three lines to make our compiler able to draw:
import sys
import matplotlib
matplotlib.use('Agg')
import matplotlib.pyplot as plt
import numpy as np
x = np.random.randint(100, size=(100))
y = np.random.randint(100, size=(100))
colors = np.random.randint(100, size=(100))
plt.scatter(x, y, c=colors, cmap='PuBuGn_r')
plt.colorbar()
plt.show()
#Two  lines to make our compiler able to draw:
plt.savefig(sys.stdout.buffer)
sys.stdout.flush()