Solved by indexerror

#	Title	# Solved	Avg. Tries
4233	Pseudoprime numbers	616	2.20
4299	Beat the Spread!	5,862	3.29
4344	Above Average	82,364	2.47
4358	Hardwood Species	5,880	2.74
4375	Ones	8,224	3.08
4458	Capitalize the first letter	6,568	1.94
4482	Tetrahedral Stacks of Cannonballs	146	1.12
4589	Gnome Sequencing	2,303	1.53
4673	Self Numbers	73,086	2.02
4696	St. Ives	1,612	1.49
4766	A Simple Question of Chemistry	2,828	1.42
4796	Happy Camper	11,584	2.53
4803	Trees	5,237	3.03
4880	What’s Next?	3,265	1.67
4948	Chebyshev's Theorem	35,836	2.56
4949	The Balance of the World	41,442	3.04
4963	How Many Islands? STANDARD	27,931	2.00
4999	Aaah! STANDARD	14,810	1.60
5026	Help a PhD candidate out!	1,948	1.47
5052	Phone List	10,379	3.19
5073	Triangles	21,520	2.11
5086	Factors And Multiples	39,229	1.60
5337	Welcome	18,460	1.37
5338	Microsoft Logo	20,888	1.25
5339	Call For Help STANDARD	15,730	1.48
5355	Math	9,287	1.75
5397	Keylogger	13,481	3.57
5522	카드 게임	18,338	1.21
5525	IOIOI	11,062	3.36
5532	방학 숙제	12,347	1.56
5534	간판	601	1.94
5543	상근날드	28,132	1.47
5545	최고의 피자	1,731	2.24
5554	심부름 가는 길 STANDARD	14,061	1.18
5557	1학년	8,027	2.10
5567	결혼식	8,326	2.23
5568	카드 놓기	5,140	1.47
5582	공통 부분 문자열	6,838	2.35
5585	거스름돈	27,439	1.52
5597	Who have not handed in ?	67,201	1.94
5598	The Caesar Cipher	6,781	1.78
5622	BAKA	76,868	1.71
5635	Birthdates	8,592	1.47
5639	Binary Search Tree	14,324	2.62
5648	Reverse and Sort	2,399	2.38
5670	Cellphone Typing	2,722	2.84
5778	Fake tickets	112	1.21
6131	Perfect Squares	2,799	1.37
6321	IBM minus one STANDARD	2,759	2.02
6322	Geometry made simple	1,933	2.80

1345678910111217