S1+S2+…+Sn |
n |
A.2010 | B.2011 | C.2012 | D.2013 |
s1+s2+…+s400 |
500 |
11+(11+a1)+(11+a1+a2) +…+(11+a1+…+a500) |
401 |
11×401+s1+s2+…+s400 |
401 |
2005×400 |
401 |
A.66 | B.153 | C.295 | D.361 |
m |
y |
a1 |
y |
a2 |
y2 |
a3 |
y3 |
a4 |
y4 |
4 |
i=0 |
n | T1T2…Tn |
A.21620 | B.21619 | C.21618 | D.21621 |
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