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fqterm.importFile("functions.js");
isexpt=function(num){
if (num==1){
return "1";
}
for (var i=2;i*i<=num;++i){
var p=i;
for (j=1;p<=num;++j){
if (p==num){
var strs = new Array();
strs[0] = i+"^"+j;
strs[1] = "(expt "+i+" "+j+")";
strs[2] = i+"**"+j;
return strs[rand(3)];
}else{
p *= i;
}
}
}
return -1;
}
ismod100=function(num){
var strs = new Array();
strs[0] = num;
if (num%1000==0){
strs[1] = "000";
return strs[rand(2)];
}else if (num%100==0){
strs[1] = "00";
return strs[rand(2)];
}else{
return -1;
}
}
isseq = function(num){
if (num<100){
return -1;
}
var digits = new Array();
var tmp = num;
var n = 0;
for (; tmp>0; n++){
digits[n] = tmp%10;
tmp = (tmp-digits[n])/10;
}
for (var i=1; i<n-1; ++i){
if (digits[i]*2==digits[i-1]+digits[i+1]){
continue;
}else{
return -1;
}
}
return num;
}
isz=function(num){
var str;
str = ismod100(num);
if (str!=-1){
return str;
}
str = isexpt(num);
if (str!=-1){
return str;
}
str = isseq(num);
if (str!=-1){
return str;
}
return -1;
}
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