# Solve
prob = cp.Problem(obj, constraint)
prob.solve(solver='ECOS', verbose=False)

# Print solution
print('='*59 + 'n' + ' '*24 + 'Solution' + ' '*24 + 'n' + '='*59)
print(f'Status = {prob.status}')
print(f'Returns = ${round(prob.value):,}n')
print('Marketing allocation:')
print(f' - Google Ads   = ${round(google.value):,}')
print(f' - Facebook Ads = ${round(facebook.value):,}')
print(f' - Twitter Ads  = ${round(twitter.value):,}')