Enlaces de los archivos empleados:

Sample submission: https://www.kaggle.com/c/santander-product-recommendation/download/sample_submission.csv.zip
Test: https://www.kaggle.com/c/santander-product-recommendation/download/test_ver2.csv.zip
Train: https://www.kaggle.com/c/santander-product-recommendation/download/train_ver2.csv.zip