답안 #541689

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
541689	2022-03-24T07:46:55 Z	cristi_a	Lightning Rod (NOI18_lightningrod)	C++17	100 / 100	1740 ms	227792 KB

lightningrod

#include <bits/stdc++.h>
using namespace std;

bool cover(pair<int,int> a, pair<int,int> b) {
    return abs(a.first-b.first) <= a.second - b.second;
}

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);

    int n; cin >> n;
    vector<pair<int,int>> v(n);
    for(int i=0; i<n; i++) cin >> v[i].first >> v[i].second;
    stack<pair<int,int>> st;
    for(int i=0; i<n; i++) {
        while(!st.empty() and cover(v[i], st.top())) st.pop();
        if(st.empty()) st.emplace(v[i]);
        else if(!cover(st.top(), v[i])) st.emplace(v[i]);
    }
    cout << st.size();
    return 0;
}

Subtask #1

4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1326 ms	163736 KB	Output is correct
2	Correct	1327 ms	162284 KB	Output is correct
3	Correct	1300 ms	152544 KB	Output is correct

Subtask #2

7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	320 KB	Output is correct
4	Correct	0 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	1 ms	212 KB	Output is correct

Subtask #3

12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	320 KB	Output is correct
4	Correct	0 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	1 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	1 ms	212 KB	Output is correct
10	Correct	0 ms	316 KB	Output is correct

Subtask #4

21.0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	320 KB	Output is correct
4	Correct	0 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	1 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	1 ms	212 KB	Output is correct
10	Correct	0 ms	316 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	340 KB	Output is correct

Subtask #5

26.0 / 26.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	320 KB	Output is correct
4	Correct	0 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	1 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	1 ms	212 KB	Output is correct
10	Correct	0 ms	316 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	340 KB	Output is correct
14	Correct	38 ms	5324 KB	Output is correct
15	Correct	41 ms	5144 KB	Output is correct
16	Correct	40 ms	5188 KB	Output is correct

Subtask #6

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1375 ms	130512 KB	Output is correct
2	Correct	1346 ms	130268 KB	Output is correct
3	Correct	1322 ms	126976 KB	Output is correct

Subtask #7

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1326 ms	163736 KB	Output is correct
2	Correct	1327 ms	162284 KB	Output is correct
3	Correct	1300 ms	152544 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	1 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	0 ms	212 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	0 ms	316 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	340 KB	Output is correct
17	Correct	38 ms	5324 KB	Output is correct
18	Correct	41 ms	5144 KB	Output is correct
19	Correct	40 ms	5188 KB	Output is correct
20	Correct	1375 ms	130512 KB	Output is correct
21	Correct	1346 ms	130268 KB	Output is correct
22	Correct	1322 ms	126976 KB	Output is correct
23	Correct	1634 ms	72540 KB	Output is correct
24	Correct	1740 ms	227792 KB	Output is correct
25	Correct	1630 ms	210180 KB	Output is correct