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Submission #710851

# Submission time Handle Problem Language Result Execution time Memory
710851 2023-03-16T02:17:44 Z awu Lightning Rod (NOI18_lightningrod) C++14
80 / 100
 2000 ms 208884 KB 
#include <bits/extc++.h>
using namespace std;

#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2")

#define int long long
#define f first
#define s second
#define all(x) x.begin(), x.end()
#define debug(x) do{auto y = x; cout << #x << " = " << y << endl;}while(0)
// #define endl "\n"
#define unordered_map __gnu_pbds::gp_hash_table
using pii = pair<int, int>;

const int inf = 1ll << 60;
const int MOD = 1e9 + 7;

signed main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  int n; cin >> n;
  vector<pii> pts(n);
  for(int i = 0; i < n; i++) {
    int x, y; cin >> x >> y;
    pts[i] = {x - y, -(x + y)};
  }
  sort(all(pts));
  int hi = -inf;
  int ans = 0;
  for(auto p : pts) {
    p.s *= -1;
    if(p.s > hi) {
      hi = p.s;
      ans++;
    }
  }
  cout << ans << endl;
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1625 ms 189468 KB Output is correct
2 Correct 1591 ms 177020 KB Output is correct
3 Correct 1514 ms 185160 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 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 320 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 320 KB Output is correct
7 Correct 0 ms 212 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 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 320 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 320 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 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 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 320 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 320 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 392 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 456 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 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 320 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 320 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 392 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 456 KB Output is correct
14 Correct 56 ms 6724 KB Output is correct
15 Correct 50 ms 6592 KB Output is correct
16 Correct 40 ms 5936 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1651 ms 208884 KB Output is correct
2 Correct 1639 ms 208840 KB Output is correct
3 Correct 1549 ms 160752 KB Output is correct

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1625 ms 189468 KB Output is correct
2 Correct 1591 ms 177020 KB Output is correct
3 Correct 1514 ms 185160 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 320 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 320 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 392 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 456 KB Output is correct
17 Correct 56 ms 6724 KB Output is correct
18 Correct 50 ms 6592 KB Output is correct
19 Correct 40 ms 5936 KB Output is correct
20 Correct 1651 ms 208884 KB Output is correct
21 Correct 1639 ms 208840 KB Output is correct
22 Correct 1549 ms 160752 KB Output is correct
23 Execution timed out 2037 ms 149388 KB Time limit exceeded
24 Halted 0 ms 0 KB -