for(;$=readline(e='');print(e||0))for(;[,c,,p]=/(.*?)x(\^(-?[\d.]+))?/g($)||[],+c?c:c+=1;e+=r[0]*!!e?'+'+r:r)r=p?/-?(?=1$)|.*/(p*5*c/5)+(p-2?'x^'+--p:'x'):c
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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