Index By Type

Pro.ID	Problem Title	Difficulty	Notes
1007	Quoit Design	Difficulty: 1	Notes:
1123	Complicated Expressions	Difficulty: 1	Notes: Expressions
1149	Structural Equivalence	Difficulty: 1	Notes:
1172	猜数字	Difficulty: 1	Notes:
1183	Not magic,but logic.	Difficulty: 1	Notes:
1211	RSA	Difficulty: 1	Notes: Decoding
1237	简单计算器	Difficulty: 2	Notes: Expressions
1265	Floating Point Presentation	Difficulty: 1	Notes:
1268	积木堆砌的城堡	Difficulty: 5	Notes:
1270	小希的数表	Difficulty: 3	Notes:
1277	全文检索	Difficulty: 2	Notes:
1287	破译密码	Difficulty: 1	Notes: Decoding
1289	Hat’s IEEE	Difficulty: 1	Notes:
1356	The Balance	Difficulty: 1	Notes:
1375	Chemical Reactions	Difficulty: 1	Notes:
1402	A * B Problem Plus	Difficulty: 3	Notes: Fourier
1427	速算24点	Difficulty: 1	Notes:
1470	Island of Logic	Difficulty: 1	Notes:
1563	Find your present!	Difficulty: 1	Notes:
1582	AC Again	Difficulty: 3	Notes:
1593	find a way to escape	Difficulty: 2	Notes:
3337	Guess the number	Difficulty: 5	Notes: Ah...Please submit 100 times.

Non-Mainstream