1144. The Emperor's Riddle Time limit: 1.0 secondMemory limit: 4 MB Background In the olden times there was a young emperor who was the bravest, wisest, richest, most handsome in the whole world. He had proven himself in endless of battles, quests, a…
http://acm.timus.ru/problem.aspx?space=1&num=1982 1982. Electrification Plan Time limit: 0.5 secondMemory limit: 64 MB Some country has n cities. The government has decided to electrify all these cities. At first, power stations in k different cities…
2062. Ambitious Experiment Time limit: 3.0 secondMemory limit: 128 MB During several decades, scientists from planet Nibiru are working to create an engine that would allow spacecrafts to fall into hyperspace and move there with superluminal velocity…
1272. Non-Yekaterinburg Subway Time limit: 1.0 secondMemory limit: 64 MB A little town started to construct a subway. The peculiarity of the town is that it is located on small islands, some of them are connected with tunnels or bridges. The mayor is…
1814: Ural 1519 Formula 1 Time Limit: 1 Sec Memory Limit: 64 MBSubmit: 942 Solved: 356[Submit][Status][Discuss] Description Regardless of the fact, that Vologda could not get rights to hold the Winter Olympic games of 20**, it is well-known, that t…
1.explain plan的使用 SQL> explain plan for delete from t_jingyu; Explained. SQL> select * from table(dbms_xplan.display); PLAN_TABLE_OUTPUT ----------------------------------------------------------------------------------------------------------------…
