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Given two positive integers a and b,find suitable X and Y to meet the conditions: X+Y=a Least Comm

A-Number and B-Number Time Limit: 1000MS Memory Limit: 65536KB Submit Statistic Discuss Problem Description     Tom is very interested in number problem. Nowadays he is thinking of a prob

Problem Description A balanced number is a non-negative integer that can be balanced if a pivot is placed at some digit. More specifically, imagine each digit as a box with weight indicated by the

Alexandra and Prime Numbers Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 2208    Accepted Submission(s): 723 Problem Description Ale

1803: 2016 Submit Page     Summary    Time Limit: 5 Sec     Memory Limit: 128 Mb     Submitted: 1201     Solved: 689     Description  给出正整数 n 和 m，统计满足以下条件的正整数对 (a,b) 的数量：