Instantaneous Transference Time Limit: 5000MS Memory Limit: 65536K Total Submissions: 6177 Accepted: 1383 Description It was long ago when we played the game Red Alert. There is a magic function for the game objects which is called instantaneous
Going from u to v or from v to u? Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 15755 Accepted: 4172 Description In order to make their sons brave, Jiajia and Wind take them to a big cave. The cave has n rooms, and one-way corridors
Problem Description Thanks to a certain "green" resources company, there is a new profitable industry of oil skimming. There are large slicks of crude oil floating in the Gulf of Mexico just waiting to be scooped up by enterprising oil barons. O