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Submission #1032675

# Submission time Handle Problem Language Result Execution time Memory
1032675 2024-07-24T06:04:05 Z 김은성(#10965) Match (CEOI16_match) C++17
37 / 100
 2000 ms 740 KB 
#include <bits/stdc++.h>
using namespace std;
char s[100009], t[100009];
int cnt[128], cur[128];
int n;
bool possible(int idx, vector<char> st){
    int i;
    for(i=idx; i<n; i++){
        if(!st.empty() && st.back() == s[i])
            st.pop_back();
        else
            st.push_back(s[i]);
    }
    return st.empty();
}
int main(){
    int i;
    scanf(" %s", s);
    n = strlen(s);
    for(i=0; i<n; i++)
        cnt[s[i]]++;
    vector<char> st;
    if(!possible(0, st)){
        printf("-1\n");
        return 0;
    }
    for(i=0; i<n; i++){
        st.push_back(s[i]);
        t[i] = '(';
        if(st.size()>1 && st[st.size()-2] == s[i]){
            if(cur[s[i]] >= cnt[s[i]]/2 || !possible(i+1, st)){
                t[i] = ')';
                cur[s[i]] -= 2;
                st.pop_back();
                st.pop_back();
            }
        }
        cur[s[i]]++;
    }
    printf("%s\n", t);
    return 0;
}

Compilation message

match.cpp: In function 'int main()':
match.cpp:21:16: warning: array subscript has type 'char' [-Wchar-subscripts]
   21 |         cnt[s[i]]++;
      |             ~~~^
match.cpp:31:23: warning: array subscript has type 'char' [-Wchar-subscripts]
   31 |             if(cur[s[i]] >= cnt[s[i]]/2 || !possible(i+1, st)){
      |                    ~~~^
match.cpp:31:36: warning: array subscript has type 'char' [-Wchar-subscripts]
   31 |             if(cur[s[i]] >= cnt[s[i]]/2 || !possible(i+1, st)){
      |                                 ~~~^
match.cpp:33:24: warning: array subscript has type 'char' [-Wchar-subscripts]
   33 |                 cur[s[i]] -= 2;
      |                     ~~~^
match.cpp:38:16: warning: array subscript has type 'char' [-Wchar-subscripts]
   38 |         cur[s[i]]++;
      |             ~~~^
match.cpp:18:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |     scanf(" %s", s);
      |     ~~~~~^~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct

Subtask #2
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 2 ms 348 KB Output is correct
7 Correct 3 ms 448 KB Output is correct

Subtask #3
0 / 63.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 2 ms 348 KB Output is correct
7 Correct 3 ms 448 KB Output is correct
8 Correct 22 ms 348 KB Output is correct
9 Correct 28 ms 348 KB Output is correct
10 Correct 22 ms 344 KB Output is correct
11 Correct 22 ms 348 KB Output is correct
12 Correct 1375 ms 584 KB Output is correct
13 Correct 1489 ms 712 KB Output is correct
14 Execution timed out 2041 ms 740 KB Time limit exceeded
15 Halted 0 ms 0 KB -