Submission #246232

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
246232	2020-07-08T12:10:11 Z	SamAnd	Lightning Rod (NOI18_lightningrod)	C++14	80 / 100	2000 ms	76188 KB

lightningrod

#include <bits/stdc++.h>
using namespace std;
#define m_p make_pair
#define all(x) (x).begin(),(x).end()
#define sz(x) ((int)(x).size())
#define fi first
#define se second
typedef long long ll;
mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());
mt19937 rnf(2106);
const int N = 10000007;

int ka()
{
    int x = 0;
    while (1)
    {
        char y = getchar();
        if ('0' <= y && y <= '9')
            x = (x * 10) + (y - '0');
        else
            return x;
    }
}

int m;
int xx[N], yy[N];

void solv()
{
    int nn = ka();
    int x, y;
    while (nn--)
    {
        x = ka();
        y = ka();
        while (m && x - xx[m - 1] <= y - yy[m - 1])
            m--;
        if (!m || !(x - xx[m - 1] <= yy[m - 1] - y))
        {
            xx[m] = x;
            yy[m] = y;
            m++;
        }
    }
    printf("%d\n", m);
}

int main()
{
    #ifdef SOMETHING
    freopen("input.txt", "r", stdin);
    //freopen("output.txt", "w", stdout);
    #endif // SOMETHING
    //ios_base::sync_with_stdio(false), cin.tie(0);
    solv();
    return 0;
}

//while ((double)clock() / CLOCKS_PER_SEC <= 0.9){}

Subtask #1

4.0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1413 ms	76188 KB	Output is correct
2	Correct	1370 ms	76148 KB	Output is correct
3	Correct	1344 ms	74108 KB	Output is correct

Subtask #2

7.0 / 7.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	4 ms	384 KB	Output is correct
3	Correct	4 ms	384 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	4 ms	384 KB	Output is correct
6	Correct	4 ms	384 KB	Output is correct
7	Correct	5 ms	384 KB	Output is correct

Subtask #3

12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	4 ms	384 KB	Output is correct
3	Correct	4 ms	384 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	4 ms	384 KB	Output is correct
6	Correct	4 ms	384 KB	Output is correct
7	Correct	5 ms	384 KB	Output is correct
8	Correct	4 ms	384 KB	Output is correct
9	Correct	5 ms	384 KB	Output is correct
10	Correct	5 ms	384 KB	Output is correct

Subtask #4

21.0 / 21.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	4 ms	384 KB	Output is correct
3	Correct	4 ms	384 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	4 ms	384 KB	Output is correct
6	Correct	4 ms	384 KB	Output is correct
7	Correct	5 ms	384 KB	Output is correct
8	Correct	4 ms	384 KB	Output is correct
9	Correct	5 ms	384 KB	Output is correct
10	Correct	5 ms	384 KB	Output is correct
11	Correct	5 ms	384 KB	Output is correct
12	Correct	5 ms	384 KB	Output is correct
13	Correct	5 ms	384 KB	Output is correct

Subtask #5

26.0 / 26.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	4 ms	384 KB	Output is correct
3	Correct	4 ms	384 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	4 ms	384 KB	Output is correct
6	Correct	4 ms	384 KB	Output is correct
7	Correct	5 ms	384 KB	Output is correct
8	Correct	4 ms	384 KB	Output is correct
9	Correct	5 ms	384 KB	Output is correct
10	Correct	5 ms	384 KB	Output is correct
11	Correct	5 ms	384 KB	Output is correct
12	Correct	5 ms	384 KB	Output is correct
13	Correct	5 ms	384 KB	Output is correct
14	Correct	48 ms	384 KB	Output is correct
15	Correct	46 ms	504 KB	Output is correct
16	Correct	41 ms	1024 KB	Output is correct

Subtask #6

10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1248 ms	49064 KB	Output is correct
2	Correct	1254 ms	49152 KB	Output is correct
3	Correct	1215 ms	47864 KB	Output is correct

Subtask #7

0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1413 ms	76188 KB	Output is correct
2	Correct	1370 ms	76148 KB	Output is correct
3	Correct	1344 ms	74108 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	4 ms	384 KB	Output is correct
6	Correct	4 ms	384 KB	Output is correct
7	Correct	5 ms	384 KB	Output is correct
8	Correct	4 ms	384 KB	Output is correct
9	Correct	4 ms	384 KB	Output is correct
10	Correct	5 ms	384 KB	Output is correct
11	Correct	4 ms	384 KB	Output is correct
12	Correct	5 ms	384 KB	Output is correct
13	Correct	5 ms	384 KB	Output is correct
14	Correct	5 ms	384 KB	Output is correct
15	Correct	5 ms	384 KB	Output is correct
16	Correct	5 ms	384 KB	Output is correct
17	Correct	48 ms	384 KB	Output is correct
18	Correct	46 ms	504 KB	Output is correct
19	Correct	41 ms	1024 KB	Output is correct
20	Correct	1248 ms	49064 KB	Output is correct
21	Correct	1254 ms	49152 KB	Output is correct
22	Correct	1215 ms	47864 KB	Output is correct
23	Execution timed out	2078 ms	632 KB	Time limit exceeded
24	Halted	0 ms	0 KB	-