[HackerEarth] A Computer Science Engineer from SKIT has been assigned a problem by his Maths Lecturer to find the number of pairs (a,b) within a given range N such that the sum of the two numbers divi - 题解

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题目信息
题号 P17264
标题 [HackerEarth] A Computer Science Engineer from SKIT has been assigned a problem by his Maths Lecturer to find the number of pairs (a,b) within a given range N such that the sum of the two numbers divi
难度 普及
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