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Observation result of two subproblem
| Subproblem | Actual grey relational grade | Ranking sequence |
|---|---|---|
| (Med1, Med3, Med4) | (Med1, 5.28), (Med3, 10.83), (Med4, 7.13) | (Med3 > Med4 > Med1) |
| (Med1, Med2, Med3) | (Med1, 4.58), (Med2, 3.10), (Med3, 10.83) | (Med3 > Med1 > Med2) |
