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题目描述
Alice and Bob are always playing game! The game today is about taking out stone from the stone piles in turn.There are n piles of stones, and the i-th pile contains A[i] stones.As the numb...
秦皇岛2020CCPC A,E,F,G,I,K
A. A Greeting from Qinhuangdao
知识点:简单题
复杂度:\(O(logn)\)
#include<bits/stdc++.h>
using namespace std;
#define rep(i,l,r) for(int i=l,_##i=r;i<=_##i;i++)...