제출 #110860

#제출 시각아이디문제언어결과실행 시간메모리
110860mosesmayer괄호 문자열 (CEOI16_match)C++17
10 / 100
2 ms512 KiB
#include <bits/stdc++.h> using namespace std; typedef long long LL; const int mxsz = 1e5 + 5; int n; char S[mxsz], ans[mxsz]; int lft[mxsz][26]; void prec(){ for (int i = 1, p; i <= n; i++){ p = S[i] - 'a'; for (int j = 0; j < 26; j++){ lft[i][j] = lft[i-1][j]; } lft[i][p] = i; } //for (int i = 1; i <= n; i++) for (int j = 0; j < 26; j++) cout << lft[i][j] << " \n"[j==25]; } inline void CANNOT(){ puts("-1"); exit(0); } void rec(int l, int r){ //cout << l << ' ' << r << '\n'; if (l > r) return; int pos = lft[r][S[l] - 'a']; if (pos <= l) CANNOT(); ans[l] = '('; ans[pos] = ')'; rec(l+1, pos - 1); rec(pos+1, r); } int main(){ scanf("%s", S+1); n = strlen(S+1); ans[n+1] = '\0'; prec(); rec(1,n); puts(ans+1); return 0; }

컴파일 시 표준 에러 (stderr) 메시지

match.cpp: In function 'int main()':
match.cpp:33:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s", S+1);
  ~~~~~^~~~~~~~~~~
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