S=\(\left(1+\frac{1}{3}+...+\frac{1}{2013}\right)-\left(\frac{1}{2}-\frac{1}{4}-...-\frac{1}{2012}\right)\)
S=\(\left(1+\frac{1}{2}+\frac{1}{3}+...+\frac{1}{2013}\right)-2\left(\frac{1}{2}+\frac{1}{4}+...+\frac{1}{2012}\right)\)
S=\(\left(\text{}\text{}\text{}1+\frac{1}{2}+...+\frac{1}{2013}\right)-1-\frac{1}{2}-...-\frac{1}{2012}\)
S=\(\frac{1}{1007}+\frac{1}{1008}+...+\frac{1}{2013}\)
=>S=P
=>S-P=0
=>(S-P)^2013=0