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Submission #733892

# Submission time Handle Problem Language Result Execution time Memory
733892 2023-05-01T11:38:39 Z vjudge1 Lightning Rod (NOI18_lightningrod) C++17
100 / 100
 1828 ms 175888 KB 
#include<bits/stdc++.h>
#define IOS ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define int long long
#define F first
#define S second
#define pb push_back

using namespace std;

stack<pair<int, int > > st;

int check(pair<int, int > a, pair<int, int > b) {
	int c = b.F - a.F;
	if (a.S - b.S >= c) return 1;
	if (b.S - a.S >= c) return 2;
	return 0;
}
void solve() {
	int n; cin >> n;
	int a, b; cin >> a >> b; st.push({a, b});
	for (int i = 1; i < n; i++) {
		cin >> a >> b;

		while (!st.empty()) {
			int x = check(st.top(), {a, b});

			if (x == 0) {st.push({a, b}); break ;}
			if (x == 1) break ;
			st.pop();
			if (st.empty()) st.push({a, b});
		}
	}
	cout << st.size();
}
signed main(){IOS solve(); return 0;}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1427 ms 159144 KB Output is correct
2 Correct 1452 ms 158900 KB Output is correct
3 Correct 1406 ms 154508 KB Output is correct

Subtask #2
7.0 / 7.0

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

Subtask #3
12.0 / 12.0

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

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 320 KB Output is correct
8 Correct 1 ms 320 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 320 KB Output is correct
11 Correct 2 ms 332 KB Output is correct
12 Correct 1 ms 368 KB Output is correct
13 Correct 1 ms 340 KB Output is correct

Subtask #5
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 320 KB Output is correct
8 Correct 1 ms 320 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 320 KB Output is correct
11 Correct 2 ms 332 KB Output is correct
12 Correct 1 ms 368 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 35 ms 452 KB Output is correct
15 Correct 36 ms 556 KB Output is correct
16 Correct 34 ms 4524 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1441 ms 102340 KB Output is correct
2 Correct 1510 ms 102308 KB Output is correct
3 Correct 1398 ms 99764 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1427 ms 159144 KB Output is correct
2 Correct 1452 ms 158900 KB Output is correct
3 Correct 1406 ms 154508 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 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 320 KB Output is correct
11 Correct 1 ms 320 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 320 KB Output is correct
14 Correct 2 ms 332 KB Output is correct
15 Correct 1 ms 368 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 35 ms 452 KB Output is correct
18 Correct 36 ms 556 KB Output is correct
19 Correct 34 ms 4524 KB Output is correct
20 Correct 1441 ms 102340 KB Output is correct
21 Correct 1510 ms 102308 KB Output is correct
22 Correct 1398 ms 99764 KB Output is correct
23 Correct 1828 ms 175888 KB Output is correct
24 Correct 1776 ms 156876 KB Output is correct
25 Correct 1685 ms 142984 KB Output is correct