A sheet of graph paper is placed with its -axis pointing due East and its -axis pointing due North. A sluggish snail starts at points (0,0) and slowly, but smoothly, slithers 1 unit North, 2 units East, 3 units South, 4 units West, 5 units North, 6 units East, 7 units South, 8 units West, 9 units North and (lastly!) 10 units East. At which point does the snail finally arrive?
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Junior Mathematical Challenge 1999 (1999)
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