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36 lines
540 B
C++
36 lines
540 B
C++
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// https://www.luogu.com.cn/record/38657002
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#include <bits/stdc++.h>
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using namespace std;
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string cnm() {
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int n;
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char ch;
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string s = "";
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string str = "";
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while (cin >> ch) {
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if (ch == '[') {
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cin >> n;
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str = cnm();
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while (n--) {
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s += str;
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}
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}
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else if (ch == ']') {
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return s;
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}
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else {
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s += ch;
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}
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}
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return s;
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}
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int main() {
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cout << cnm() << endl;
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return 0;
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}
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