wrong answer on test 1
input:
 493777638371

expected:
 ccccccccccccccoooooooooooooodddddddddddddddeeeeeeeeeeeeeeefffffffffffffffooooooooooooooorrrrrrrrrrrrrrrccccccccccccccceeeeeeeeeeeeeeesssssssssssssss

got:
 cccccccccccccccooooooooooooooodddddddddddddddeeeeeeeeeeeeeeefffffffffffffffooooooooooooooorrrrrrrrrrrrrrrccccccccccccccceeeeeeeeeeeeeessssssssssssss