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#include <iostream>
#include <vector>
#include <algorithm>
#include <iomanip>
#include <set>
#include <list>
#include <string>
#include <cmath>
#include <stack>
#include <map>
#include <sstream>
#include <queue>
using namespace std;
map<char, int>counts;
bool com(char a, char b) {
if (counts[a] == counts[b]) {
return a < b;
}
return counts[a] > counts[b];
}
int main() {
string s;
while (cin >> s) {
counts.clear();
for (int i = 0; i < s.size(); i++) {
if (counts.find(s[i]) == counts.end()) {
counts[s[i]] ...
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