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<Python><PAT> 1051 Pop Sequence
<Python><PAT> 1050 String Subtraction
<Python><PAT> 1049 Counting Ones
<Python><PAT> 1048 Find Coins
<Python><PAT> 1047 Student List for Course
<Python><PAT> 1046 Shortest Distance
<Python><PAT> 1045 Favorite Color Stripe
<Python><PAT> 1044 Shopping in Mars
<Python><PAT> 1043 Is It a Binary Search Tree
<Python><PAT> 1042 Shuffling Machine