许长安

Subsequence Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 8128   Accepted: 3141 Description A sequence of N positive integers (10 < N < 100 000), each of t

Jessica's Reading Problem Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 6711   Accepted: 2077 Description Jessica's a very lovely girl wooed by lots of boy

Sunscreen Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 3317   Accepted: 1171 Description To avoid unsightly burns while tanning, each of the C (1 ≤ C ≤ 25

Saruman's Army Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 3519   Accepted: 1787 Description Saruman the White must lead his army along a straight path

ExpeditionTime Limit:  1000MSMemory Limit:  65536KDescriptionA group of cows grabbed a truck and ventured on an expedition deep into the jungle. Being rather poor drivers, the cows unfortunately manag

Fence Repair Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 24153   Accepted: 7703 Description Farmer John wants to repair a small length of the fence aroun

Red and Black Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 21482   Accepted: 11488 Description There is a rectangular room, covered with square tiles. Eac