log.Println(solveSecond(bingo))

}
func solveSecond(bingo Bingo) int {
	var winners = map[int]struct{}{}
	for mark, elem := range bingo.marks {
		if mark < gridSize {
			continue
		}
		marks := bingo.findMark(elem)
		for _, m := range marks {
			if bingo.checkRow(m.grid, m.row, mark) || bingo.checkCol(m.grid, m.col, mark) {
				winners[m.grid] = struct{}{}
				if len(winners) == len(bingo.grids) {
					log.Println(bingo.gridValue(m.grid, mark), bingo.marks[mark])
					return bingo.gridValue(m.grid, mark) * bingo.marks[mark]
				}
			}
		}
	}
	return 0

	log.Println("checkRow:", b.marks[:mark+1], b.grids[gridnum][row])

	// log.Println("checkRow:", b.marks[:mark+1], b.grids[gridnum][row])

	log.Println("checkCol:", b.marks[:mark+1], b.grids[gridnum][0:gridSize][col])

	// log.Println("checkCol:", b.marks[:mark+1], b.grids[gridnum][0:gridSize][col])