摘要：D - Laying Cables Time Limit:2000MS Memory Limit:262144KB 64bit IO Format:%I64d & %I64u One-dimensional country has n cities, the i-th of which is loc 阅读全文

摘要：J - Sockets Time Limit:1000MS Memory Limit:262144KB 64bit IO Format:%I64d & %I64u Valera has only one electrical socket in his flat. He also has m dev 阅读全文

摘要：D. Directed Roads time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output D. Directed Roads time 阅读全文

摘要：C. Coloring Trees time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output C. Coloring Trees time 阅读全文