답안 #94544

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
94544	2019-01-20T07:36:33 Z	FutymyClone	Lightning Rod (NOI18_lightningrod)	C++14	100 / 100	1412 ms	157152 KB

lightningrod

#include <bits/stdc++.h>

using namespace std;

const int N = 1e7 + 5;

int n;
stack <pair <int, int> > st;

int readInt(){
    char c;
    int ans = 0;
    while (1) {
        c = getchar();
        if (c == ' ' || c == '\n') return ans;
        ans = (ans << 3) + (ans << 1) + (c - '0');
    }
}

int main(){
    n = readInt();
    for (int i = 1; i <= n; i++) {
        int x, y;
        x = readInt(); y = readInt();

        bool ok = true;
        while (!st.empty()) {
            if (x - st.top().first <= st.top().second - y) {
                ok = false;
                break;
            }

            if (x - st.top().first <= y - st.top().second) st.pop();
            else break;
        }

        if (ok) st.push({x, y});
    }

    printf("%d", (int)st.size());
    return 0;
}

Subtask #1

4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	977 ms	82892 KB	Output is correct
2	Correct	979 ms	82716 KB	Output is correct
3	Correct	936 ms	80348 KB	Output is correct

Subtask #2

7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	256 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	256 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct

Subtask #3

12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	256 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	256 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	256 KB	Output is correct
9	Correct	2 ms	256 KB	Output is correct
10	Correct	2 ms	252 KB	Output is correct

Subtask #4

21.0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	256 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	256 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	256 KB	Output is correct
9	Correct	2 ms	256 KB	Output is correct
10	Correct	2 ms	252 KB	Output is correct
11	Correct	2 ms	376 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	2 ms	376 KB	Output is correct

Subtask #5

26.0 / 26.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	256 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	256 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	256 KB	Output is correct
9	Correct	2 ms	256 KB	Output is correct
10	Correct	2 ms	252 KB	Output is correct
11	Correct	2 ms	376 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	2 ms	376 KB	Output is correct
14	Correct	31 ms	3832 KB	Output is correct
15	Correct	30 ms	3676 KB	Output is correct
16	Correct	26 ms	3704 KB	Output is correct

Subtask #6

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	886 ms	53972 KB	Output is correct
2	Correct	885 ms	53884 KB	Output is correct
3	Correct	873 ms	52476 KB	Output is correct

Subtask #7

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	977 ms	82892 KB	Output is correct
2	Correct	979 ms	82716 KB	Output is correct
3	Correct	936 ms	80348 KB	Output is correct
4	Correct	2 ms	256 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	256 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	376 KB	Output is correct
11	Correct	2 ms	256 KB	Output is correct
12	Correct	2 ms	256 KB	Output is correct
13	Correct	2 ms	252 KB	Output is correct
14	Correct	2 ms	376 KB	Output is correct
15	Correct	2 ms	376 KB	Output is correct
16	Correct	2 ms	376 KB	Output is correct
17	Correct	31 ms	3832 KB	Output is correct
18	Correct	30 ms	3676 KB	Output is correct
19	Correct	26 ms	3704 KB	Output is correct
20	Correct	886 ms	53972 KB	Output is correct
21	Correct	885 ms	53884 KB	Output is correct
22	Correct	873 ms	52476 KB	Output is correct
23	Correct	1412 ms	31836 KB	Output is correct
24	Correct	1294 ms	157152 KB	Output is correct
25	Correct	1196 ms	137008 KB	Output is correct