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a=2^5 *17^5-(2*17)^5+3
a=2^5 *17^5-2^5*17^5 +3
a= 0+3=3
b=3^4*13^4-39^4+2=39^4-38^4+2=0+2=2
a-b=1
atunci
1^1+1^2+...+1^1995=1+1+..+1 (avem1995de 1)=1995