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44 lines
923 B
C++
44 lines
923 B
C++
// https://www.luogu.com.cn/record/35887921
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#include <bits/stdc++.h>
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using namespace std;
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int main() {
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int n = 0;
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cin >> n;
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string s = "";
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cin >> s;
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for (int i = 0; i < n; i++) {
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int act;
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cin >> act;
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if (act == 1) {
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string s1;
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cin >> s1;
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s += s1;
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cout << s;
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} else if (act == 2) {
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int st, ed;
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cin >> st >> ed;
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s = s.substr(st, ed);
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cout << s;
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} else if (act == 3) {
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int st;
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string s1;
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cin >> st >> s1;
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s.insert(st, s1);
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cout << s;
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} else if (act == 4) {
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string s1;
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cin >> s1;
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if (s.find(s1) < s.size()) {
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cout << s.find(s1);
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} else {
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cout << "-1";
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}
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}
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cout << endl;
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}
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return 0;
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}
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