题目链接———— Dima’s got a staircase that consists of n stairs. The first stair is at height a1, the second one is at a2, the last one is at an (1 ≤ a1 ≤ a2 ≤ … ≤ an).
Dima decided to play with the staircase, so he is throwing rectangular…
传送门:http://codeforces.com/problemset/problem/272/C C. Dima and Staircase time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Dimas got a staircase that consists of n stairs. The first …