oj.uz

Submission #296254

# Submission time Handle Problem Language Result Execution time Memory
296254 2020-09-10T12:41:21 Z BThero Long Mansion (JOI17_long_mansion) C++17
10 / 100
 466 ms 14072 KB 
// chrono::system_clock::now().time_since_epoch().count()
#include<bits/stdc++.h>

#define pb push_back
#define eb emplace_back
#define mp make_pair
#define fi first
#define se second
#define all(x) (x).begin(), (x).end()
#define debug(x) cerr << #x << " = " << x << endl;

using namespace std;

typedef long long ll;
typedef pair<int, int> pii;

const int MAXN = (int)5e3 + 5;

vector<pii> bad[MAXN];
vector<int> keys[MAXN];
pii seg[MAXN];
int betw[MAXN];
int A[MAXN], B[MAXN];
int n, q;
int own[MAXN];

void solve() {
  scanf("%d", &n);
  
  for (int i = 1; i < n; ++i) {
    scanf("%d", &betw[i]);
  }
  
  for (int i = 1; i <= n; ++i) {
    int sz;
    scanf("%d", &sz);
    keys[i].resize(sz);
    
    for (int j = 0; j < sz; ++j) {
      scanf("%d", &keys[i][j]);
    }
  }
  
  for (int i = 1; i < n; ++i) {
    int p = i + 1;
    
    while (p <= n && find(all(keys[p]), betw[i]) == keys[p].end()) {
      ++p;
    }
    
    B[i] = p;
  }
  
  for (int i = 2; i <= n; ++i) {
    int p = i - 1;
    
    while (p > 0 && find(all(keys[p]), betw[i - 1]) == keys[p].end()) {
      --p;
    }
    
    A[i] = p;
  }
  
  B[0] = n + 1;
  A[n + 1] = 0;
  
  for (int l = 1; l <= n; ++l) {
    for (int r = l; r <= n; ++r) {
      if (B[l - 1] > r && A[r + 1] < l) {
        bad[r - l + 1].eb(l, r);
      }
    }
  }
  
  for (int i = 1; i <= n; ++i) {
    seg[i] = mp(-1, -1);
  }
  
  for (int len = 1; len <= n; ++len) {
    vector<pii> mark(n + 5, mp(-1, -1));
    
    for (auto it : bad[len]) {
      for (int i = it.fi; i <= it.se; ++i) {
        if (mark[i] != mp(-1, -1)) {
          assert(seg[i] != mp(-1, -1));
        }
      
        mark[i] = it;
      }
    }
    
    for (int i = 1; i <= n; ++i) {
      if (seg[i] == mp(-1, -1)) {
        seg[i] = mark[i];
      }
    }
  }
  
  scanf("%d", &q);
  
  for (int i = 1; i <= q; ++i) {
    int a, b;
    scanf("%d %d", &a, &b);
    
    if (seg[a].fi <= b && b <= seg[a].se) {
      printf("YES\n");
    }
    else {
      printf("NO\n");
    }
  }
}

int main() {
  int tt = 1;
  
  while (tt--) {
    solve();
  }

  return 0;
}

Compilation message

long_mansion.cpp: In function 'void solve()':
long_mansion.cpp:28:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   28 |   scanf("%d", &n);
      |   ~~~~~^~~~~~~~~~
long_mansion.cpp:31:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   31 |     scanf("%d", &betw[i]);
      |     ~~~~~^~~~~~~~~~~~~~~~
long_mansion.cpp:36:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   36 |     scanf("%d", &sz);
      |     ~~~~~^~~~~~~~~~~
long_mansion.cpp:40:12: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   40 |       scanf("%d", &keys[i][j]);
      |       ~~~~~^~~~~~~~~~~~~~~~~~~
long_mansion.cpp:99:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   99 |   scanf("%d", &q);
      |   ~~~~~^~~~~~~~~~
long_mansion.cpp:103:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  103 |     scanf("%d %d", &a, &b);
      |     ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 896 KB Output is correct
2 Correct 55 ms 1016 KB Output is correct
3 Correct 145 ms 1144 KB Output is correct
4 Correct 20 ms 768 KB Output is correct
5 Correct 20 ms 804 KB Output is correct
6 Correct 19 ms 768 KB Output is correct
7 Correct 229 ms 8184 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 896 KB Output is correct
2 Correct 55 ms 1016 KB Output is correct
3 Correct 145 ms 1144 KB Output is correct
4 Correct 20 ms 768 KB Output is correct
5 Correct 20 ms 804 KB Output is correct
6 Correct 19 ms 768 KB Output is correct
7 Correct 229 ms 8184 KB Output is correct
8 Correct 180 ms 5552 KB Output is correct
9 Correct 190 ms 5496 KB Output is correct
10 Correct 211 ms 5628 KB Output is correct
11 Correct 311 ms 5880 KB Output is correct
12 Correct 162 ms 5624 KB Output is correct
13 Correct 180 ms 5624 KB Output is correct
14 Correct 176 ms 5604 KB Output is correct
15 Correct 174 ms 5752 KB Output is correct
16 Correct 171 ms 6008 KB Output is correct
17 Correct 173 ms 5624 KB Output is correct
18 Correct 176 ms 5624 KB Output is correct
19 Correct 174 ms 5624 KB Output is correct
20 Correct 167 ms 5732 KB Output is correct
21 Correct 167 ms 5880 KB Output is correct
22 Correct 174 ms 5624 KB Output is correct
23 Correct 387 ms 12832 KB Output is correct
24 Correct 406 ms 12920 KB Output is correct
25 Correct 385 ms 12852 KB Output is correct
26 Correct 466 ms 14072 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Execution timed out 10 ms 1024 KB Time limit exceeded (wall clock)
2 Halted 0 ms 0 KB -

Subtask #4
0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 896 KB Output is correct
2 Correct 55 ms 1016 KB Output is correct
3 Correct 145 ms 1144 KB Output is correct
4 Correct 20 ms 768 KB Output is correct
5 Correct 20 ms 804 KB Output is correct
6 Correct 19 ms 768 KB Output is correct
7 Correct 229 ms 8184 KB Output is correct
8 Correct 180 ms 5552 KB Output is correct
9 Correct 190 ms 5496 KB Output is correct
10 Correct 211 ms 5628 KB Output is correct
11 Correct 311 ms 5880 KB Output is correct
12 Correct 162 ms 5624 KB Output is correct
13 Correct 180 ms 5624 KB Output is correct
14 Correct 176 ms 5604 KB Output is correct
15 Correct 174 ms 5752 KB Output is correct
16 Correct 171 ms 6008 KB Output is correct
17 Correct 173 ms 5624 KB Output is correct
18 Correct 176 ms 5624 KB Output is correct
19 Correct 174 ms 5624 KB Output is correct
20 Correct 167 ms 5732 KB Output is correct
21 Correct 167 ms 5880 KB Output is correct
22 Correct 174 ms 5624 KB Output is correct
23 Correct 387 ms 12832 KB Output is correct
24 Correct 406 ms 12920 KB Output is correct
25 Correct 385 ms 12852 KB Output is correct
26 Correct 466 ms 14072 KB Output is correct
27 Execution timed out 10 ms 1024 KB Time limit exceeded (wall clock)
28 Halted 0 ms 0 KB -