HDU 1977 Consecutive sum II（数学）
2014-09-16 20:38:31

题目链接：http://acm.hdu.edu.cn/showproblem.php?pid=1977 Problem Description Consecutive sum come again. Are you ready? Go ~~ 1    = 0 + 1 2+3+4    = 1 + 8 5+6+7+8+9  = 8 + 27 … You can see the consecutive sum can be representing like that. The nth line will have 2*n+1 consec ......

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