Submission #246231

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
246231	2020-07-08T12:09:26 Z	SamAnd	Lightning Rod (NOI18_lightningrod)	C++	80 / 100	2000 ms	76216 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	1450 ms	76156 KB	Output is correct
2	Correct	1450 ms	76216 KB	Output is correct
3	Correct	1355 ms	74008 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	5 ms	384 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	5 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	5 ms	384 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	5 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	5 ms	384 KB	Output is correct
9	Correct	5 ms	384 KB	Output is correct
10	Correct	4 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	5 ms	384 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	5 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	5 ms	384 KB	Output is correct
9	Correct	5 ms	384 KB	Output is correct
10	Correct	4 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	5 ms	384 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	5 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	5 ms	384 KB	Output is correct
9	Correct	5 ms	384 KB	Output is correct
10	Correct	4 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	45 ms	384 KB	Output is correct
16	Correct	41 ms	1144 KB	Output is correct

Subtask #6

10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1258 ms	49232 KB	Output is correct
2	Correct	1242 ms	49148 KB	Output is correct
3	Correct	1311 ms	47968 KB	Output is correct

Subtask #7

0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1450 ms	76156 KB	Output is correct
2	Correct	1450 ms	76216 KB	Output is correct
3	Correct	1355 ms	74008 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	4 ms	384 KB	Output is correct
6	Correct	5 ms	384 KB	Output is correct
7	Correct	5 ms	384 KB	Output is correct
8	Correct	5 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	5 ms	384 KB	Output is correct
12	Correct	5 ms	384 KB	Output is correct
13	Correct	4 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	45 ms	384 KB	Output is correct
19	Correct	41 ms	1144 KB	Output is correct
20	Correct	1258 ms	49232 KB	Output is correct
21	Correct	1242 ms	49148 KB	Output is correct
22	Correct	1311 ms	47968 KB	Output is correct
23	Execution timed out	2099 ms	384 KB	Time limit exceeded
24	Halted	0 ms	0 KB	-