原题:How many m-digit numbers with digit sum of N ?
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• How many m-digit numbers with digit sum of N ? -兄贵- ♂ (0 bytes) () 11/18/2013 postreply 09:09:06
• How many m-digit numbers with digit sum of N ? -兄贵- ♂ (0 bytes) () 11/18/2013 postreply 09:09:06