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Submission #668631

# Submission time Handle Problem Language Result Execution time Memory
668631 2022-12-04T10:04:23 Z 600Mihnea Lightning Rod (NOI18_lightningrod) C++17
100 / 100
 1585 ms 76896 KB 
#include <bits/stdc++.h>


using namespace std;

struct T
{
  int x;
  int y;
};

bool eat(T a, T b)
{
  return a.x <= b.x && a.y <= b.y;
}

signed main()
{
#ifdef ONPC
  freopen ("input.txt", "r", stdin);
#endif // ONPC

#ifndef ONPC
  ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#endif // ONPC

  int n;

  cin >> n;
  vector<T> stk;
  stk.reserve(n);
  for (int i = 1; i <= n; i++)
  {
    int x, y;
    cin >> x >> y;
    T cur = {-x - y, x - y};
    if (stk.empty())
    {
      stk.push_back(cur);
    }
    else
    {
      if (eat(stk.back(), cur))
      {
        continue;
      }
      while (!stk.empty() && eat(cur, stk.back()))
      {
        stk.pop_back();
      }
      stk.push_back(cur);
    }
  }
  cout << (int) stk.size() << "\n";
  return 0;
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1293 ms 76896 KB Output is correct
2 Correct 1295 ms 76888 KB Output is correct
3 Correct 1255 ms 74748 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 320 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 316 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 316 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 320 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 316 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 316 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 320 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 316 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 316 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 332 KB Output is correct

Subtask #5
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 320 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 316 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 316 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 34 ms 1492 KB Output is correct
15 Correct 40 ms 1648 KB Output is correct
16 Correct 35 ms 2152 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1362 ms 50712 KB Output is correct
2 Correct 1316 ms 50408 KB Output is correct
3 Correct 1308 ms 49272 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1293 ms 76896 KB Output is correct
2 Correct 1295 ms 76888 KB Output is correct
3 Correct 1255 ms 74748 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 320 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 316 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 316 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 34 ms 1492 KB Output is correct
18 Correct 40 ms 1648 KB Output is correct
19 Correct 35 ms 2152 KB Output is correct
20 Correct 1362 ms 50712 KB Output is correct
21 Correct 1316 ms 50408 KB Output is correct
22 Correct 1308 ms 49272 KB Output is correct
23 Correct 1568 ms 1692 KB Output is correct
24 Correct 1585 ms 71476 KB Output is correct
25 Correct 1482 ms 64840 KB Output is correct