답안 #743789

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
743789	2023-05-18T01:53:59 Z	vjudge1	Lightning Rod (NOI18_lightningrod)	C++17	100 / 100	491 ms	205836 KB

lightningrod

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

bool check(ll x1, ll x2, ll y1, ll y2)
{
    return abs(x1 - x2) <= y1 - y2;
}

inline void read(long long &x)
{
    x = 0;
    char ch = getchar_unlocked();
    while (ch & 16)
    {
        x = (x << 3) + (x << 1) + (ch & 15);
        ch = getchar_unlocked();
    }
}

int main()
{
    ll n;
    ll a, b;
    stack<pair<ll, ll>> st;
    read(n);
    for (int i = 0; i < n; ++i)
    {
        read(a);
        read(b);
        if (!st.empty() && check(st.top().first, a, st.top().second, b)) // old cover new
        {
            continue;
        }
        while (!st.empty() && check(a, st.top().first, b, st.top().second)) // new cover old
        {
            st.pop();
        }
        st.push({a,b});
    }
    cout << st.size();
}

Subtask #1

4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	321 ms	182032 KB	Output is correct
2	Correct	342 ms	205836 KB	Output is correct
3	Correct	333 ms	198804 KB	Output is correct

Subtask #2

7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	296 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	212 KB	Output is correct

Subtask #3

12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	296 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	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	212 KB	Output is correct

Subtask #4

21.0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	296 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	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	212 KB	Output is correct
11	Correct	1 ms	212 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	1 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	296 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	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	212 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	1 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	13 ms	3060 KB	Output is correct
15	Correct	12 ms	2888 KB	Output is correct
16	Correct	13 ms	4292 KB	Output is correct

Subtask #6

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	297 ms	122836 KB	Output is correct
2	Correct	328 ms	157592 KB	Output is correct
3	Correct	304 ms	159092 KB	Output is correct

Subtask #7

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	321 ms	182032 KB	Output is correct
2	Correct	342 ms	205836 KB	Output is correct
3	Correct	333 ms	198804 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	0 ms	296 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	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	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	13 ms	3060 KB	Output is correct
18	Correct	12 ms	2888 KB	Output is correct
19	Correct	13 ms	4292 KB	Output is correct
20	Correct	297 ms	122836 KB	Output is correct
21	Correct	328 ms	157592 KB	Output is correct
22	Correct	304 ms	159092 KB	Output is correct
23	Correct	491 ms	75220 KB	Output is correct
24	Correct	398 ms	72320 KB	Output is correct
25	Correct	379 ms	73108 KB	Output is correct