原文 How many planets are out there? Today scientists believe that planets could outnumber the stars.For centuries,scientists and natual philosophers have proposed that stars in the night sky have planetary system similar to our solar system.The existe…
Treasure Hunt IV Time Limit: 2 Seconds Memory Limit: 65536 KB Alice is exploring the wonderland, suddenly she fell into a hole, when she woke up, she found there are b - a + 1 treasures labled a from b in front of her.Alice was very excited but…
Treasure Hunt Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 4797 Accepted: 1998 Description Archeologists from the Antiquities and Curios Museum (ACM) have flown to Egypt to examine the great pyramid of Key-Ops. Using state-of-the-ar…
Treasure Hunt IV Time Limit: 2 Seconds Memory Limit: 65536 KB Alice is exploring the wonderland, suddenly she fell into a hole, when she woke up, she found there are b - a + 1 treasures labled a from b in front of her. Alice was very excited but…