题意 有C个奶牛去晒太阳 (1 <=C <= 2500)，每个奶牛各自能够忍受的阳光强度有一个最小值和一个最大值，太大就晒伤了，太小奶牛没感觉。 而刚开始的阳光的强度非常大，奶牛都承受不住，然后奶牛就得涂抹防晒霜，防晒霜的作用是让阳光照在身上的阳光强度固定为某个值。 那么为了不让奶牛烫伤，又不会没有效果。 给出了L种防晒霜。每种的数量和固定的阳光强度也给出来了 每个奶牛只能抹一瓶防晒霜，

题目： 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

Sunscreen Time Limit: 1000MS Memory Limit: 65536KTotal Submissions: 9975 Accepted: 3478 Description To avoid unsightly burns while tanning, each of the C (1 ≤ C ≤ 2500) cows must cover her

题目链接 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