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Submission #64326

# Submission time Handle Problem Language Result Execution time Memory
64326 2018-08-04T05:27:20 Z Just_Solve_The_Problem parentrises (BOI18_parentrises) C++11
56 / 100
 1000 ms 13484 KB 
#include <bits/stdc++.h>

using namespace std;

#define pb push_back
#define sz(s) (int)s.size()
#define all(s) s.begin(), s.end()

const int N = (int)1e6 + 7;
const int inf = (int)1e9 + 7;

int b[N];
vector < int > stk;
int a[N];
int mod = (int)1e9 + 7;

bool solve1(string &s) {
  b[0] = ((s[0] == '(') ? 1 : -1);
  a[0] = 1;
  for (int i = 1; i < sz(s); i++) {
    b[i] = b[i - 1] + ((s[i] == '(') ? 1 : -1);
    a[i] = 1;
  }
  int cur = 0;
  stk.clear();
  for (int i = 0; i < sz(s); i++) {
    if (s[i] == ')') stk.pb(i);
    if (b[i] + cur < 0) {
//        cout << i << ' ' << b[i] + cur << ' ' << sz(stk) << endl;
      while (b[i] + cur < 0 && sz(stk) > 1) {
        a[stk.back()] = 0;
        stk.pop_back();
        a[stk.back()] = 2;
        stk.pop_back();
        cur++;
      }
      if (b[i] + cur < 0) {
        return 0;
      }
    }
  }
  stk.clear();
  for (int i = 0; i < sz(s); i++) {
    if (s[i] == '(')
      stk.pb(i);
  }
  int b1 = b[sz(s) - 1] + cur;
  while (b1 > 0 && sz(stk) > 1) {
    b1--;
    a[stk.back()] = 0;
    stk.pop_back();
    a[stk.back()] = 2;
    stk.pop_back();
  }
  if (b1 > 0) {
    return 0;
  }
  b1 = 0;
  int b2 = 0;
  bool fl = 0;
  for (int i = 0; i < sz(s); i++) {
    if (a[i] <= 1) {
      b1 += ((s[i] == '(') ? 1 : -1);
    }
    if (a[i] >= 1) {
      b2 += ((s[i] == '(') ? 1 : -1);
    }
    fl |= (b1 < 0 || b2 < 0);
  }
  fl |= (b1 != 0 || b2 != 0);
  if (fl) {
    return 0;
  }
  return 1;
}

int add(int a, int b) {
  return (a + b) % mod;
}

int n;
int ans = 0;

void go(string &s) {
  if (sz(s) == n) {
    if (solve1(s)) {
//      cout << s << endl;
      ans++;
    }
    return ;
  }
  s.pb('(');
  go(s);
  s.pop_back();
  s.pb(')');
  go(s);
  s.pop_back();
}

void solve2() {
  scanf("%d", &n);
  string asd;
  ans = 0;
  go(asd);
  cout << ans << endl;
}

main() {
  int p;
  scanf("%d", &p);
  int test;
  scanf("%d", &test);
  if (p == 1) {
    while (test--) {
      string s;
      cin >> s;
      if (solve1(s) == 0) {
        puts("impossible");
      } else {
        for (int i = 0; i < sz(s); i++) {
          if (a[i] == 0) printf("R");
          else if (a[i] == 1) printf("G");
          else printf("B");
        }
        puts("");
      }
    }
  } else {
    while (test--)
      solve2();
  }
}

Compilation message

parentrises.cpp:108:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^
parentrises.cpp: In function 'void solve2()':
parentrises.cpp:101:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &n);
   ~~~~~^~~~~~~~~~
parentrises.cpp: In function 'int main()':
parentrises.cpp:110:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &p);
   ~~~~~^~~~~~~~~~
parentrises.cpp:112:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &test);
   ~~~~~^~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 376 KB Output is correct
2 Correct 2 ms 488 KB Output is correct
3 Correct 3 ms 488 KB Output is correct
4 Correct 2 ms 488 KB Output is correct
5 Correct 3 ms 620 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 620 KB Output is correct
2 Correct 2 ms 620 KB Output is correct
3 Correct 3 ms 620 KB Output is correct
4 Correct 3 ms 620 KB Output is correct
5 Correct 3 ms 620 KB Output is correct

Subtask #3
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 620 KB Output is correct
2 Correct 2 ms 620 KB Output is correct
3 Correct 3 ms 620 KB Output is correct
4 Correct 3 ms 620 KB Output is correct
5 Correct 3 ms 620 KB Output is correct
6 Correct 2 ms 620 KB Output is correct
7 Correct 3 ms 620 KB Output is correct
8 Correct 2 ms 620 KB Output is correct
9 Correct 4 ms 620 KB Output is correct
10 Correct 2 ms 620 KB Output is correct

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 620 KB Output is correct
2 Correct 2 ms 620 KB Output is correct
3 Correct 3 ms 620 KB Output is correct
4 Correct 3 ms 620 KB Output is correct
5 Correct 3 ms 620 KB Output is correct
6 Correct 2 ms 620 KB Output is correct
7 Correct 3 ms 620 KB Output is correct
8 Correct 2 ms 620 KB Output is correct
9 Correct 4 ms 620 KB Output is correct
10 Correct 2 ms 620 KB Output is correct
11 Correct 6 ms 620 KB Output is correct
12 Correct 3 ms 752 KB Output is correct
13 Correct 5 ms 752 KB Output is correct
14 Correct 4 ms 752 KB Output is correct
15 Correct 3 ms 780 KB Output is correct
16 Correct 21 ms 780 KB Output is correct
17 Correct 15 ms 1948 KB Output is correct
18 Correct 12 ms 1948 KB Output is correct
19 Correct 13 ms 1948 KB Output is correct
20 Correct 16 ms 1948 KB Output is correct
21 Correct 191 ms 1948 KB Output is correct
22 Correct 123 ms 13484 KB Output is correct
23 Correct 80 ms 13484 KB Output is correct
24 Correct 102 ms 13484 KB Output is correct
25 Correct 125 ms 13484 KB Output is correct

Subtask #5
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 13484 KB Output is correct

Subtask #6
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 13484 KB Output is correct
2 Execution timed out 1076 ms 13484 KB Time limit exceeded

Subtask #7
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 13484 KB Output is correct
2 Execution timed out 1076 ms 13484 KB Time limit exceeded