A gourmet came into the banquet hall, where the cooks suggested n dishes for guests. The gourmet knows the schedule: when each of the dishes will be served. For i-th of the dishes he knows two integer moments in time ai and bi (in seconds from the be…

题目链接 给你n种菜, 每一种可以开始吃的时间不一样, 结束的时间也不一样. 求每种菜吃的时间都相同的最大的时间.时间的范围是0-10000. 看到这个题明显可以想到网络流, 但是时间的范围明显不允许我们把对每一个时间都连边. 那么我们可以对时间的区间连边, 对于一个区间, 如果一盘菜的开始时间>=这个区间的左端点, 结束时间小于右端点, 那么这盘菜就对这个时间段连边, 权值inf.然后每个时间段对汇点t连边, 权值为这段时间的长度. 源点s向每个菜连边, 权值为二分枚举的时间长度, 然后跑最大…

F. Gourmet and Banquet time limit per test 2 seconds memory limit per test 512 megabytes input standard input output standard output A gourmet came into the banquet hall, where the cooks suggested n dishes for guests. The gourmet knows the schedule:…

A gourmet came into the banquet hall, where the cooks suggested n dishes for guests. The gourmet knows the schedule: when each of the dishes will be served. For i-th of the dishes he knows two integer moments in time ai and bi (in seconds from the be…

题目链接:http://codeforces.com/problemset/problem/589/F A gourmet came into the banquet hall, where the cooks suggested n dishes for guests. The gourmet knows the schedule: when each of the dishes will be served. For i-th of the dishes he knows two integ…

A gourmet came into the banquet hall, where the cooks suggested n dishes for guests. The gourmet knows the schedule: when each of the dishes will be served. For i-th of the dishes he knows two integer moments in time ai and bi (in seconds from the be…

题目链接:http://codeforces.com/problemset/problem/1154/C 题目大意: 主人有一只猫.周一&周四&周日:吃鱼周二&周六:吃兔子周三&周五:吃鸡 他们现在要外出旅游.他们带了一个包,包里有:a份鱼肉b份兔肉c份鸡肉 问,猫的主人在最优解的情况下(即他可以自由的选择周几出去旅游),最多可以多少天不额外在外购买猫粮?(即,这个包最多能够猫吃多少天) [猫一天就吃一份] 分析: 首先把能吃完整7天的食量减掉,接下来的食物配比就只能吃0~…

Problem   Codeforces #541 (Div2) - D. Gourmet choice Time Limit: 2000 mSec Problem Description Input Output The first line of output should contain "Yes", if it's possible to do a correct evaluation for all the dishes, or "No" otherwis…

Mr. Apple, a gourmet, works as editor-in-chief of a gastronomic periodical. He travels around the world, tasting new delights of famous chefs from the most fashionable restaurants. Mr. Apple has his own signature method of review  — in each restauran…

题意:你要带着你的喵咪一起去旅行,你的喵在星期\(1,4,7\)吃喵粮\(x\),在星期\(2,6\)吃喵粮\(y\),在星期\(3,5\)吃喵粮\(z\),你只有\(a\)个\(x\),\(b\)个\(y\),\(c\)个\(z\),一旦吃完旅行就结束了,问你选择星期几出发能使旅行的天数最长. 题解:这已经是这个星期第三次碰到这种idea的题了,我们一定是旅行了几个(或者0)星期的循环后才会结束,所以先求出最多能跑几个循环,然后剩下的枚举求个最大值即可. 代码: int a,b,c; // a…