#include <iostream>
#include <string>
using namespace std;
int main()
{
string str;
string Del_str;
cin>>str;
int length = str.size();
int min = 1000; //出现次数最少的字符的出现次数,自然不能为 0
int a[128] = {0};
for(int i = 0;i < length;i++)
{
a[str[i]]++;
}
for(int j=0;j<128;j++)
{
if((a[j] <= min)&&(a[j] != 0))
{
min = a[j];
}
}
for(int k = 0; k < length; k++)
{
if(a[str[k]] > min)
{
Del_str += str[k];
}
}
cout<<Del_str;
}
#include <string>
using namespace std;
int main()
{
string str;
string Del_str;
cin>>str;
int length = str.size();
int min = 1000; //出现次数最少的字符的出现次数,自然不能为 0
int a[128] = {0};
for(int i = 0;i < length;i++)
{
a[str[i]]++;
}
for(int j=0;j<128;j++)
{
if((a[j] <= min)&&(a[j] != 0))
{
min = a[j];
}
}
for(int k = 0; k < length; k++)
{
if(a[str[k]] > min)
{
Del_str += str[k];
}
}
cout<<Del_str;
}