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Submission #865389

# Submission time Handle Problem Language Result Execution time Memory
865389 2023-10-24T07:50:16 Z Trisanu_Das Lightning Rod (NOI18_lightningrod) C++17
100 / 100
 1343 ms 178044 KB 
#include <bits/stdc++.h>
using namespace std;
#define ff first
#define ss second
 
int n;
stack<pair<int, int> > s;
 
int main() {
    ios_base::sync_with_stdio(false); cin.tie(NULL);
	cin >> n;
	for (int i = 1; i <= n; i++) { 
      int x, y; cin >> x >> y;
      int mx = x + y, mn = x - y;
      while(!s.empty() && s.top().ff >= mn) s.pop();
      if(s.empty() || s.top().ss < mx) s.push({mn, mx});
	}
	cout << s.size() << '\n';
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1084 ms 119288 KB Output is correct
2 Correct 1095 ms 178044 KB Output is correct
3 Correct 1068 ms 174424 KB Output is correct

Subtask #2
7.0 / 7.0

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

Subtask #3
12.0 / 12.0

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

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 600 KB Output is correct
13 Correct 1 ms 348 KB Output is correct

Subtask #5
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 600 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 26 ms 436 KB Output is correct
15 Correct 26 ms 460 KB Output is correct
16 Correct 26 ms 1140 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1091 ms 79836 KB Output is correct
2 Correct 1118 ms 148048 KB Output is correct
3 Correct 1085 ms 144220 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1084 ms 119288 KB Output is correct
2 Correct 1095 ms 178044 KB Output is correct
3 Correct 1068 ms 174424 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 600 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 26 ms 436 KB Output is correct
18 Correct 26 ms 460 KB Output is correct
19 Correct 26 ms 1140 KB Output is correct
20 Correct 1091 ms 79836 KB Output is correct
21 Correct 1118 ms 148048 KB Output is correct
22 Correct 1085 ms 144220 KB Output is correct
23 Correct 1343 ms 175760 KB Output is correct
24 Correct 1265 ms 157160 KB Output is correct
25 Correct 1229 ms 140624 KB Output is correct