#include <iostream>
#include <string>
#include <stdio.h>
using namespace std;
int main()
{
setlocale(LC_ALL, "Russian");
string previous = "The cat cat jumped ";
string current;
while (getline(cin, current)) {
if (previous == current) {
cout << "повторяющееся слово: " << current << "\n";
}
previous = current;
}
return 0;
}
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