Among the largest percentage gainers on the TSX were Eldorado Gold Corp ELD.TO, which rose 9.3%, and Blackberry Ltd BB.TO, which ended 4.7% higher. By Fergal Smith TORONTO, Oct 13 (Reuters) - Canada's main stock index climbed to a four-week high as hot U.S. inflation data bolstered the attractiveness of metal mining shares, while the technology group also gained ground. U.S. consumer prices increased solidly in September as Americans paid more for food, rent and a range of other goods, putting pressure on the Biden administration to urgently resolve strained supply chains, which are hampering economic growth.