摘要：
"传送门" 题面： Due to recent rains, water has pooled in various places in Farmer John's field, which is represented by a rectangle of N x M (1 include usin 阅读全文
摘要：
"传送门" 题面： 农夫 John 建造了一座很长的畜栏，它包括N (2 l){ guess = (r+l)/2; if(guess include using namespace std; const int maxn = 1e6 + 5; long long a[maxn]; int n, c; 阅读全文