測資二根本刁難
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#include <iostream>
#include <cstdlib>
using namespace std;
int main()
{
int a,b;
cin >>a;
if(a==0)
cout<<"";
else if(a%10==0){
cout<<"";
a=a/10;
while(a%10==0)
a=a/10;
}
while(a/10!=0){
cout<<a%10;
a=a/10;
}
cout<<a;
//system("pause");
return 0;
}