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- #include <iostream>
- #include <string>
- int main() {
- std::string s;
- std::cin >> s;
- std::string result = "";
- bool inserting = false;
- int pos = 0;
- for (int i = 0; i < s.size(); ++i) {
- if (inserting) {
- if (s.size() - i >= 5 && s.substr(i, 5) == "<ESC>") {
- inserting = false;
- i += 4;
- } else {
- result = result.substr(0, pos) + s[i] + result.substr(pos, result.size() - pos);
- pos++;
- }
- } else {
- if (s[i] == 'i') {
- inserting = true;
- } else if (s[i] == 'h' && pos > 0) {
- pos--;
- } else if (s[i] == 'l' && pos < result.size() - 1) {
- pos++;
- }
- }
- }
- std::cout << result << '\n';
- }
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