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2015 F3 E1
MBMT Team -- Fermat #3/Euler #1
MBMT Team -- Fermat #3/Euler #1
Source:
March 29, 2015
Problem Statement
Compute
1
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2
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3
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4
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⋯
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2013
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2014
+
2015
1 - 2 + 3 - 4 + \dots + 2013 - 2014 + 2015
1
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2
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3
−
4
+
⋯
+
2013
−
2014
+
2015
.
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