rationalize path concatenation
rationalize path concatenation

Rule of thumb: never put a trailing slash in path components,
concatenation adds the path separator.

France-ioi/bebras-platform,be-oi/beoi-contest-platform,be-oi/beoi-contest-platform,be-oi/beoi-contest-platform,France-ioi/bebras-platform,France-ioi/bebras-platform,France-ioi/bebras-platform,be-oi/beoi-contest-platform,be-oi/beoi-contest-platform,France-ioi/bebras-platform,France-ioi/bebras-platform,be-oi/beoi-contest-platform