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#include<stdio.h>
#include<string.h>
#include<iostream>
#include<string>
#include<algorithm>
using namespace std;
int main(){
string s;
while(cin>>s){
string alpha;
string nums;
string others;
for(int i=0; i<s.length(); i++){
if(isalpha(s[i])) alpha+=s[i];
else if(isdigit(s[i])) nums+=s[i];
else others+=s[i];
}
cout<<alpha<<endl;
cout<<nums<<endl;
cout<<others<<endl;
...
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