31 lines
610 B
C++
31 lines
610 B
C++
#include <iostream>
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#include <list>
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#include <string>
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using namespace std;
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int main() {
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string line;
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while (getline(cin, line)) { // 一次读一整行，直到 EOF
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list<char> s;
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auto it = s.begin();
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for (char tmp : line) {
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if (tmp == '[') {
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it = s.begin();
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}
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else if (tmp == ']') {
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it = s.end();
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}
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else {
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it = s.insert(it, tmp);
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++it;
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}
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}
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for (char c : s) cout << c;
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cout << '\n'; // 每行输出一行
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}
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return 0;
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}
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