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25 lines
522 B
25 lines
522 B
2 years ago
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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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//输入+输出重定向
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//freopen("../x.in", "r", stdin);
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//freopen("../x.out", "w", stdout);
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string s;
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getline(cin, s);
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stack<char> st;
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for (int i = 0; i < s.size(); ++i) {
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if (s[i] == '(') st.push('(');
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if (s[i] == ')') st.pop();
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}
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if (st.empty()) cout << "YES" << endl;
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else cout << "NO" << endl;
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//关闭文件
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//fclose(stdin);
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//fclose(stdout);
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return 0;
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}
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