题目描述 Farmer John is distributing chocolates at the barn for Valentine's day, and B (1 <= B <= 25,000) of his bulls have a special cow in mind to receive a chocolate gift. Each of the bulls and cows is grazing alone in one of the farm's N (2*B <=…

https://www.luogu.org/problem/show?pid=2984 题目描述 Farmer John is distributing chocolates at the barn for Valentine's day, and B (1 <= B <= 25,000) of his bulls have a special cow in mind to receive a chocolate gift. Each of the bulls and cows is graz…

P2983 [USACO10FEB]购买巧克力Chocolate Buying 题目描述 Bessie and the herd love chocolate so Farmer John is buying them some. The Bovine Chocolate Store features N (1 <= N <= 100,000) kinds of chocolate in essentially unlimited quantities. Each type i of choc…

P2983 [USACO10FEB]购买巧克力Chocolate Buying 题目描述 Bessie and the herd love chocolate so Farmer John is buying them some. The Bovine Chocolate Store features N (1 <= N <= 100,000) kinds of chocolate in essentially unlimited quantities. Each type i of choc…

购买巧克力Chocolate Buying 乍一看以为是背包,然后交了一个感觉没错的背包上去. #include <iostream> #include <cstdio> #include <cstring> #include <algorithm> using namespace std; //Mystery_Sky // #define M 10000000 #define ll long long ll f[M]; ll p[M], num[M], s…

题目描述 Bessie and the herd love chocolate so Farmer John is buying them some. The Bovine Chocolate Store features N (1 <= N <= 100,000) kinds of chocolate in essentially unlimited quantities. Each type i of chocolate has price P_i (1 <= P_i <= 1…

https://www.luogu.org/problem/show?pid=2983 题目描述 Bessie and the herd love chocolate so Farmer John is buying them some. The Bovine Chocolate Store features N (1 <= N <= 100,000) kinds of chocolate in essentially unlimited quantities. Each type i of…

题目链接:https://www.luogu.org/problemnew/show/P2984 练习SPFA,把FJ当做起点,求出到所有牛的最短路,再把两个牛的相加. #include <cstdio> #include <queue> #include <iostream> #include <algorithm> #include <cstring> using namespace std; ; const int inf = 0x7fff…

题意简叙: FarmerFarmerFarmer JohnJohnJohn有B头奶牛(1<=B<=25000)(1<=B<=25000)(1<=B<=25000),有N(2∗B<=N<=50000)N(2*B<=N<=50000)N(2∗B<=N<=50000)个农场,编号1−N1-N1−N,有M(N−1<=M<=100000)M(N-1<=M<=100000)M(N−1<=M<=100000)条双…

P2985 [USACO10FEB]吃巧克力Chocolate Eating 题目描述 Bessie has received N (1 <= N <= 50,000) chocolates from the bulls, but doesn't want to eat them too quickly, so she wants to plan out her chocolate eating schedule for the next D (1 <= D <= 50,000)…