Submission #57205

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
57205	2018-07-14 09:17:47	RezwanArefin01	Match (CEOI16_match)	C++17	100 / 100	21 ms	10028 KiB

match

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#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> ii; 
const int N = 1e5 + 10;
int trie[N][26], n, p[N], u, idx, ed[N];  
vector<int> v[N]; 
char s[N], ans[N]; 
int cnt = 0; 
void solve(int l, int r) {
  if(l > r) return; 
  vector<int> &x = v[ed[l + 1]];
  auto it = --lower_bound(x.begin(), x.end(), r + 1);
  ans[l] = '('; 
  ans[*it] = ')'; 
  solve(l + 1, *it - 1); 
  solve(*it + 1, r); 
}
int main(int argc, char const *argv[]) {
  scanf(" %s", s); n = strlen(s);
  stack<int> st;
  for(int i = 0; i < n; i++) {
    int c = s[i] - 'a'; 
    if(!st.size() || st.top() != c) {
      st.push(c); 
      int &v = trie[u][c];
      if(!v) v = ++idx; 
 
 
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Compilation message (stderr)

match.cpp: In function 'int main(int, const char**)':
match.cpp:23:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf(" %s", s); n = strlen(s);
  ~~~~~^~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 27 / 27
• Subtask 3: 63 / 63