#include <iostream>
#include <sstream>
using namespace std;
void report_error(string&s){ cout<<"error : parsing int failed : "<<s<<endl;}
void do_smth(int x){ cout<<x<<endl;}
int main(){
	istream& input=cin;
	string s;
	int x;
	while(input>>s){
	    stringstream ss(s);
	    ss>>x;
	    if (!ss.eof()) {// не дошли при парсинге инта до конца строки
	        //значит x отметаем
	        report_error(s);
	        continue;
	    }
	    do_smth(x);
	}
}

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