제출 #604428

#제출 시각아이디문제언어결과실행 시간메모리
604428Zanite괄호 문자열 (CEOI16_match)C++17
0 / 100
0 ms212 KiB
#include <bits/stdc++.h> using namespace std; const int maxL = 1e5 + 10; const int Alph = 26; int L, freq[Alph], tfreq[Alph]; char S[maxL], ans[maxL]; void Exit() { printf("-1\n"); exit(0); } int main() { scanf("%s", S); L = strlen(S); for (int i = 0; i < L; i++) { freq[S[i] - 'a']++; } for (int i = 0; i < Alph; i++) { if (freq[i] & 1) {Exit();} freq[i] >>= 1; tfreq[i] = freq[i]; //cout << freq[i] << '\n'; } vector<char> St; for (int i = 0; i < L; i++) { if (tfreq[S[i] - 'a']) { St.push_back(S[i]); tfreq[S[i] - 'a']--; } else { if (St.empty() || (St.back() != S[i])) { Exit(); } else { St.pop_back(); } } } if (!St.empty()) {Exit();} for (int i = 0; i < L; i++) { if (freq[S[i] - 'a']) { putchar('('); freq[S[i] - 'a']--; } else { putchar(')'); } } putchar('\n'); }

컴파일 시 표준 에러 (stderr) 메시지

match.cpp: In function 'int main()':
match.cpp:16:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |     scanf("%s", S);
      |     ~~~~~^~~~~~~~~
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