#include <algorithm> #include <cctype> #include <climits> #include <cmath> #include <cstdio> #include <cstring> #include <iostream> #include <map> #include <set> #include <stack> #include <string> #include <vector> using namespace std; int main(void) { string s = ""; char c; while ((c = getchar()) != '\n') { if (s.length() == 0 || (s.length() != 0 && s[s.size() - 1] != c)) s += c; } cout << s << endl; } |
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