poj3614-贪心、优先队列

Language: Default Sunscreen Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 2754   Accepted: 958 Description To avoid unsightly burns while tanning, each of the C (1 ≤ C ≤ 2500) cows must cover her hide with sunscreen when they're at the beach. Cow i has a minimum and maximum SPF rating (1 ≤ minSPFi ≤ 1,000; minSPFi ≤ maxSPFi ≤ 1,000) that will work. If the SPF rating is too low, the cow suffers sunburn; if the SPFrating is too high, the cow doesn't tan at all........ The cows have a picnic basket with L (1 ≤ L ≤ 2500) bottles of sunscreen lotion, each bottle i with an SPF rating SPFi (1 ≤ SPFi ≤ 1,000). Lotion bottle i can cover coveri cows with lotion. A cow may lotion from only one bottle. What is the maximum number of cows that can protect themselves while tanning given the available lotions? Input * Line 1: Two space-separated integers: C and L * Lines 2..C+1: Line i describes cow i's lotion requires with two integers: minSPFi and maxSPFi  * Lines C+2..C+L+1: Line i+C+1 describes a sunscreen lotion bottle i with space-separated integers: SPFi and coveri Output A single line with an integer that is the maximum number of cows that can be protected while tanning Sample Input 3 2 3 10 2 5 1 5 6 2 4 1 Sample Output 2 1.贪心 奶牛按可以承受的最大值从小到大排序，lotion也从小到大排序。 #include #include #include 2.优先队列。 #include #include #include #include #include