CodeForces 14D
Two Paths
CodeForces 219D Choosing Capital for Treeland
CodeForces 29D Ant on the Tree
CodeForces 85C Petya and Tree
HDU 1011 Starship Troopers
HDU 1520 Anniversary party
HDU 1561 The more, The Better
HDU 2196 Computer
HDU 2242 考研路茫茫――空调教室
HDU 2378 Cutting Banknotes
HDU 3586 Information Disturbing
HDU 3593 The most powerful force
HDU 3899 JLUCPC
HDU 3900 Unblock Me
HDU 4003 Find Metal Mineral
HDU 4008 Parent and son
HDU 4044 GeoDefense
HDU 4118 Holiday's Accommodation
HDU 4276 The Ghost Blows Light
HDU 4340 Capturing a country
HDU 4616 Game
HYSBZ 1063 道路设计
POJ 1155 TELE
POJ 1156 A STRIP OF LAND
POJ 1192 最优连通子集
POJ 1463 Strategic game
POJ 1655 Balancing Act
POJ 1741 Tree
POJ 1849 Two
POJ 1850 Code
POJ 1895 Bring Them There
POJ 1935 Journey
POJ 1947 Rebuilding Roads
POJ 1948 Triangular Pastures
POJ 2057 The Lost House
POJ 2152 Fire
POJ 2378 Tree Cutting
POJ 2486 Apple Tree
POJ 2659 Bomb Game
POJ 3093 Margaritas on the River Walk
POJ 3107 Godfather
POJ 3140 Contestants Division
POJ 3162 Walking Race
POJ 3342 Party at Hali-Bula
POJ 3345 Bribing FIPA
POJ 3417 Network
SGU 134 Centroid
SGU 149 Computer Network
URAL 1018 Binary Apple Tree
URAL 1056 Computer Net
ZOJ 2834 Maximize Game Time
ZOJ 3188 Treeland Exhibition
ZOJ 3201 Tree of Tree
ZOJ 3506 Cut the Tree
ZOJ 3527 Shinryaku! Kero Musume
ZOJ 3627 Treasure Hunt II