답안 #93197 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
93197	2019-01-07T07:44:59 Z	Alexa2001	Bulldozer (JOI17_bulldozer)	C++17	100 / 100	768 ms	33612 KB

bulldozer

#include <bits/stdc++.h>
#define left_son (node<<1)
#define right_son ((node<<1)|1)
#define mid ((st+dr)>>1)

using namespace std;

const int Nmax = 2005;
typedef long long ll;

ll ans = 0;
int n, i, j, where[Nmax], ord[Nmax];


class SegTree
{
    ll best[Nmax<<2], pref[Nmax<<2], suff[Nmax<<2], s[Nmax<<2];
public:
    void update(int node, int st, int dr, int pos, int val)
    {
        if(st== dr)
        {
            best[node] = pref[node] = suff[node] = max(0, val);
            s[node] = val;
            return;
        }

        if(pos <= mid) update(left_son, st, mid, pos, val);
            else update(right_son, mid+1, dr, pos, val);

        s[node] = s[left_son] + s[right_son];
        pref[node] = max(pref[left_son], s[left_son] + pref[right_son]);
        suff[node] = max(suff[right_son], s[right_son] + suff[left_son]);

        best[node] = max(best[left_son], best[right_son]);
        best[node] = max(best[node], suff[left_son] + pref[right_son]);
    }

    ll query()
    {
        return best[1];
    }
} aint;


struct point
{
    int x, y, p;
    bool operator < (const point &other) const
    {
        if(x == other.x) return y > other.y;
        return x > other.x;
    }
};
point a[Nmax];

struct intr
{
    int x, y, id1, id2;
    bool operator < (const intr &other) const
    {
        if((ll) x * other.y == (ll) y * other.x) return (make_pair(id1, id2) < make_pair(other.id1, other.id2));
        return (ll) x * other.y < (ll) y * other.x;
    }

    bool operator == (const intr &other) const
    {
        return (ll) x * other.y == (ll) y * other.x;
    }
};
vector<intr> intersect;

void apply(intr A)
{
    int p1 = where[A.id1], p2 = where[A.id2];
    assert(p1 + 1 == p2);

    aint.update(1, 1, n, p2, a[A.id1].p);
    aint.update(1, 1, n, p1, a[A.id2].p);

    swap(where[A.id1], where[A.id2]);
    swap(ord[p1], ord[p2]);
}

ll eval()
{
    return aint.query();
}

int main()
{
 //   freopen("input", "r", stdin);
    cin.sync_with_stdio(false);

    cin >> n;
    for(i=1; i<=n; ++i) cin >> a[i].x >> a[i].y >> a[i].p;

    sort(a+1, a+n+1);

    for(i=1; i<=n; ++i) ord[i] = i, where[i] = i;

    for(i=1; i<=n; ++i) aint.update(1, 1, n, i, a[i].p);
    ans = eval();

    for(i=1; i<=n; ++i)
        for(j=i+1; j<=n; ++j)
            if(a[i].x != a[j].x)
                intersect.push_back({a[i].y - a[j].y, a[i].x - a[j].x, i, j});
    sort(intersect.begin(), intersect.end());

    for(i=0; i<intersect.size(); ++i)
    {
        j = i;
        while(j<intersect.size() && intersect[i] == intersect[j])
            apply(intersect[j++]);
        i = j - 1;

        ans = max(ans, eval());
    }

    cout << ans << '\n';
    return 0;
}

Compilation message

bulldozer.cpp: In function 'int main()':
bulldozer.cpp:111:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(i=0; i<intersect.size(); ++i)
              ~^~~~~~~~~~~~~~~~~
bulldozer.cpp:114:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         while(j<intersect.size() && intersect[i] == intersect[j])
               ~^~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	640 KB	Output is correct
2	Correct	3 ms	612 KB	Output is correct
3	Correct	3 ms	640 KB	Output is correct
4	Correct	3 ms	640 KB	Output is correct
5	Correct	3 ms	612 KB	Output is correct
6	Correct	3 ms	512 KB	Output is correct
7	Correct	3 ms	640 KB	Output is correct
8	Correct	3 ms	640 KB	Output is correct
9	Correct	3 ms	512 KB	Output is correct
10	Correct	2 ms	512 KB	Output is correct
11	Correct	1 ms	384 KB	Output is correct
12	Correct	2 ms	384 KB	Output is correct
13	Correct	2 ms	384 KB	Output is correct
14	Correct	2 ms	384 KB	Output is correct
15	Correct	2 ms	384 KB	Output is correct

Subtask #2
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	560 KB	Output is correct
2	Correct	3 ms	512 KB	Output is correct
3	Correct	3 ms	512 KB	Output is correct
4	Correct	3 ms	512 KB	Output is correct
5	Correct	3 ms	512 KB	Output is correct
6	Correct	3 ms	512 KB	Output is correct
7	Correct	3 ms	512 KB	Output is correct
8	Correct	3 ms	512 KB	Output is correct
9	Correct	3 ms	560 KB	Output is correct
10	Correct	3 ms	512 KB	Output is correct
11	Correct	2 ms	384 KB	Output is correct
12	Correct	2 ms	384 KB	Output is correct
13	Correct	2 ms	384 KB	Output is correct
14	Correct	2 ms	384 KB	Output is correct
15	Correct	2 ms	384 KB	Output is correct
16	Correct	2 ms	384 KB	Output is correct
17	Correct	2 ms	384 KB	Output is correct
18	Correct	2 ms	384 KB	Output is correct
19	Correct	2 ms	384 KB	Output is correct
20	Correct	2 ms	384 KB	Output is correct
21	Correct	3 ms	640 KB	Output is correct
22	Correct	3 ms	640 KB	Output is correct
23	Correct	3 ms	640 KB	Output is correct
24	Correct	4 ms	512 KB	Output is correct
25	Correct	3 ms	512 KB	Output is correct
26	Correct	3 ms	512 KB	Output is correct
27	Correct	3 ms	512 KB	Output is correct
28	Correct	3 ms	512 KB	Output is correct
29	Correct	4 ms	640 KB	Output is correct
30	Correct	3 ms	640 KB	Output is correct
31	Correct	3 ms	640 KB	Output is correct
32	Correct	3 ms	556 KB	Output is correct

Subtask #3
35.0 / 35.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	560 KB	Output is correct
2	Correct	3 ms	512 KB	Output is correct
3	Correct	3 ms	512 KB	Output is correct
4	Correct	3 ms	512 KB	Output is correct
5	Correct	3 ms	512 KB	Output is correct
6	Correct	3 ms	512 KB	Output is correct
7	Correct	3 ms	512 KB	Output is correct
8	Correct	3 ms	512 KB	Output is correct
9	Correct	3 ms	560 KB	Output is correct
10	Correct	3 ms	512 KB	Output is correct
11	Correct	2 ms	384 KB	Output is correct
12	Correct	2 ms	384 KB	Output is correct
13	Correct	2 ms	384 KB	Output is correct
14	Correct	2 ms	384 KB	Output is correct
15	Correct	2 ms	384 KB	Output is correct
16	Correct	2 ms	384 KB	Output is correct
17	Correct	2 ms	384 KB	Output is correct
18	Correct	2 ms	384 KB	Output is correct
19	Correct	2 ms	384 KB	Output is correct
20	Correct	2 ms	384 KB	Output is correct
21	Correct	3 ms	640 KB	Output is correct
22	Correct	3 ms	640 KB	Output is correct
23	Correct	3 ms	640 KB	Output is correct
24	Correct	4 ms	512 KB	Output is correct
25	Correct	3 ms	512 KB	Output is correct
26	Correct	3 ms	512 KB	Output is correct
27	Correct	3 ms	512 KB	Output is correct
28	Correct	3 ms	512 KB	Output is correct
29	Correct	4 ms	640 KB	Output is correct
30	Correct	3 ms	640 KB	Output is correct
31	Correct	3 ms	640 KB	Output is correct
32	Correct	3 ms	556 KB	Output is correct
33	Correct	708 ms	33428 KB	Output is correct
34	Correct	701 ms	33472 KB	Output is correct
35	Correct	679 ms	33484 KB	Output is correct
36	Correct	687 ms	33464 KB	Output is correct
37	Correct	678 ms	33448 KB	Output is correct
38	Correct	688 ms	33512 KB	Output is correct
39	Correct	693 ms	33444 KB	Output is correct
40	Correct	683 ms	33592 KB	Output is correct
41	Correct	688 ms	33488 KB	Output is correct
42	Correct	748 ms	33472 KB	Output is correct
43	Correct	747 ms	33488 KB	Output is correct
44	Correct	700 ms	33516 KB	Output is correct
45	Correct	664 ms	33472 KB	Output is correct
46	Correct	674 ms	33468 KB	Output is correct
47	Correct	679 ms	33476 KB	Output is correct
48	Correct	694 ms	33612 KB	Output is correct
49	Correct	693 ms	33472 KB	Output is correct
50	Correct	694 ms	33472 KB	Output is correct
51	Correct	701 ms	33472 KB	Output is correct
52	Correct	719 ms	33472 KB	Output is correct
53	Correct	713 ms	33456 KB	Output is correct
54	Correct	695 ms	33476 KB	Output is correct

Subtask #4
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	560 KB	Output is correct
2	Correct	3 ms	512 KB	Output is correct
3	Correct	3 ms	512 KB	Output is correct
4	Correct	3 ms	512 KB	Output is correct
5	Correct	3 ms	512 KB	Output is correct
6	Correct	3 ms	512 KB	Output is correct
7	Correct	3 ms	512 KB	Output is correct
8	Correct	3 ms	512 KB	Output is correct
9	Correct	3 ms	560 KB	Output is correct
10	Correct	3 ms	512 KB	Output is correct
11	Correct	2 ms	384 KB	Output is correct
12	Correct	2 ms	384 KB	Output is correct
13	Correct	2 ms	384 KB	Output is correct
14	Correct	2 ms	384 KB	Output is correct
15	Correct	2 ms	384 KB	Output is correct
16	Correct	2 ms	384 KB	Output is correct
17	Correct	2 ms	384 KB	Output is correct
18	Correct	2 ms	384 KB	Output is correct
19	Correct	2 ms	384 KB	Output is correct
20	Correct	2 ms	384 KB	Output is correct
21	Correct	3 ms	640 KB	Output is correct
22	Correct	3 ms	640 KB	Output is correct
23	Correct	3 ms	640 KB	Output is correct
24	Correct	4 ms	512 KB	Output is correct
25	Correct	3 ms	512 KB	Output is correct
26	Correct	3 ms	512 KB	Output is correct
27	Correct	3 ms	512 KB	Output is correct
28	Correct	3 ms	512 KB	Output is correct
29	Correct	4 ms	640 KB	Output is correct
30	Correct	3 ms	640 KB	Output is correct
31	Correct	3 ms	640 KB	Output is correct
32	Correct	3 ms	556 KB	Output is correct
33	Correct	708 ms	33428 KB	Output is correct
34	Correct	701 ms	33472 KB	Output is correct
35	Correct	679 ms	33484 KB	Output is correct
36	Correct	687 ms	33464 KB	Output is correct
37	Correct	678 ms	33448 KB	Output is correct
38	Correct	688 ms	33512 KB	Output is correct
39	Correct	693 ms	33444 KB	Output is correct
40	Correct	683 ms	33592 KB	Output is correct
41	Correct	688 ms	33488 KB	Output is correct
42	Correct	748 ms	33472 KB	Output is correct
43	Correct	747 ms	33488 KB	Output is correct
44	Correct	700 ms	33516 KB	Output is correct
45	Correct	664 ms	33472 KB	Output is correct
46	Correct	674 ms	33468 KB	Output is correct
47	Correct	679 ms	33476 KB	Output is correct
48	Correct	694 ms	33612 KB	Output is correct
49	Correct	693 ms	33472 KB	Output is correct
50	Correct	694 ms	33472 KB	Output is correct
51	Correct	701 ms	33472 KB	Output is correct
52	Correct	719 ms	33472 KB	Output is correct
53	Correct	713 ms	33456 KB	Output is correct
54	Correct	695 ms	33476 KB	Output is correct
55	Correct	702 ms	33484 KB	Output is correct
56	Correct	700 ms	33472 KB	Output is correct
57	Correct	715 ms	33488 KB	Output is correct
58	Correct	696 ms	33472 KB	Output is correct
59	Correct	669 ms	33496 KB	Output is correct
60	Correct	674 ms	33472 KB	Output is correct
61	Correct	697 ms	33472 KB	Output is correct
62	Correct	727 ms	33532 KB	Output is correct
63	Correct	730 ms	33472 KB	Output is correct
64	Correct	676 ms	33496 KB	Output is correct
65	Correct	710 ms	33488 KB	Output is correct
66	Correct	714 ms	33472 KB	Output is correct
67	Correct	710 ms	33472 KB	Output is correct
68	Correct	714 ms	33472 KB	Output is correct
69	Correct	673 ms	33488 KB	Output is correct
70	Correct	695 ms	33472 KB	Output is correct
71	Correct	685 ms	33492 KB	Output is correct
72	Correct	696 ms	33472 KB	Output is correct
73	Correct	687 ms	33488 KB	Output is correct
74	Correct	688 ms	33472 KB	Output is correct

Subtask #5
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	640 KB	Output is correct
2	Correct	3 ms	612 KB	Output is correct
3	Correct	3 ms	640 KB	Output is correct
4	Correct	3 ms	640 KB	Output is correct
5	Correct	3 ms	612 KB	Output is correct
6	Correct	3 ms	512 KB	Output is correct
7	Correct	3 ms	640 KB	Output is correct
8	Correct	3 ms	640 KB	Output is correct
9	Correct	3 ms	512 KB	Output is correct
10	Correct	2 ms	512 KB	Output is correct
11	Correct	1 ms	384 KB	Output is correct
12	Correct	2 ms	384 KB	Output is correct
13	Correct	2 ms	384 KB	Output is correct
14	Correct	2 ms	384 KB	Output is correct
15	Correct	2 ms	384 KB	Output is correct
16	Correct	3 ms	560 KB	Output is correct
17	Correct	3 ms	512 KB	Output is correct
18	Correct	3 ms	512 KB	Output is correct
19	Correct	3 ms	512 KB	Output is correct
20	Correct	3 ms	512 KB	Output is correct
21	Correct	3 ms	512 KB	Output is correct
22	Correct	3 ms	512 KB	Output is correct
23	Correct	3 ms	512 KB	Output is correct
24	Correct	3 ms	560 KB	Output is correct
25	Correct	3 ms	512 KB	Output is correct
26	Correct	2 ms	384 KB	Output is correct
27	Correct	2 ms	384 KB	Output is correct
28	Correct	2 ms	384 KB	Output is correct
29	Correct	2 ms	384 KB	Output is correct
30	Correct	2 ms	384 KB	Output is correct
31	Correct	2 ms	384 KB	Output is correct
32	Correct	2 ms	384 KB	Output is correct
33	Correct	2 ms	384 KB	Output is correct
34	Correct	2 ms	384 KB	Output is correct
35	Correct	2 ms	384 KB	Output is correct
36	Correct	3 ms	640 KB	Output is correct
37	Correct	3 ms	640 KB	Output is correct
38	Correct	3 ms	640 KB	Output is correct
39	Correct	4 ms	512 KB	Output is correct
40	Correct	3 ms	512 KB	Output is correct
41	Correct	3 ms	512 KB	Output is correct
42	Correct	3 ms	512 KB	Output is correct
43	Correct	3 ms	512 KB	Output is correct
44	Correct	4 ms	640 KB	Output is correct
45	Correct	3 ms	640 KB	Output is correct
46	Correct	3 ms	640 KB	Output is correct
47	Correct	3 ms	556 KB	Output is correct
48	Correct	708 ms	33428 KB	Output is correct
49	Correct	701 ms	33472 KB	Output is correct
50	Correct	679 ms	33484 KB	Output is correct
51	Correct	687 ms	33464 KB	Output is correct
52	Correct	678 ms	33448 KB	Output is correct
53	Correct	688 ms	33512 KB	Output is correct
54	Correct	693 ms	33444 KB	Output is correct
55	Correct	683 ms	33592 KB	Output is correct
56	Correct	688 ms	33488 KB	Output is correct
57	Correct	748 ms	33472 KB	Output is correct
58	Correct	747 ms	33488 KB	Output is correct
59	Correct	700 ms	33516 KB	Output is correct
60	Correct	664 ms	33472 KB	Output is correct
61	Correct	674 ms	33468 KB	Output is correct
62	Correct	679 ms	33476 KB	Output is correct
63	Correct	694 ms	33612 KB	Output is correct
64	Correct	693 ms	33472 KB	Output is correct
65	Correct	694 ms	33472 KB	Output is correct
66	Correct	701 ms	33472 KB	Output is correct
67	Correct	719 ms	33472 KB	Output is correct
68	Correct	713 ms	33456 KB	Output is correct
69	Correct	695 ms	33476 KB	Output is correct
70	Correct	702 ms	33484 KB	Output is correct
71	Correct	700 ms	33472 KB	Output is correct
72	Correct	715 ms	33488 KB	Output is correct
73	Correct	696 ms	33472 KB	Output is correct
74	Correct	669 ms	33496 KB	Output is correct
75	Correct	674 ms	33472 KB	Output is correct
76	Correct	697 ms	33472 KB	Output is correct
77	Correct	727 ms	33532 KB	Output is correct
78	Correct	730 ms	33472 KB	Output is correct
79	Correct	676 ms	33496 KB	Output is correct
80	Correct	710 ms	33488 KB	Output is correct
81	Correct	714 ms	33472 KB	Output is correct
82	Correct	710 ms	33472 KB	Output is correct
83	Correct	714 ms	33472 KB	Output is correct
84	Correct	673 ms	33488 KB	Output is correct
85	Correct	695 ms	33472 KB	Output is correct
86	Correct	685 ms	33492 KB	Output is correct
87	Correct	696 ms	33472 KB	Output is correct
88	Correct	687 ms	33488 KB	Output is correct
89	Correct	688 ms	33472 KB	Output is correct
90	Correct	680 ms	33472 KB	Output is correct
91	Correct	697 ms	33536 KB	Output is correct
92	Correct	686 ms	33472 KB	Output is correct
93	Correct	677 ms	33472 KB	Output is correct
94	Correct	676 ms	33472 KB	Output is correct
95	Correct	693 ms	33472 KB	Output is correct
96	Correct	680 ms	33536 KB	Output is correct
97	Correct	693 ms	33472 KB	Output is correct
98	Correct	676 ms	33496 KB	Output is correct
99	Correct	684 ms	33472 KB	Output is correct
100	Correct	309 ms	17132 KB	Output is correct
101	Correct	327 ms	17124 KB	Output is correct
102	Correct	299 ms	17132 KB	Output is correct
103	Correct	297 ms	17116 KB	Output is correct
104	Correct	302 ms	17108 KB	Output is correct
105	Correct	460 ms	33488 KB	Output is correct
106	Correct	424 ms	33472 KB	Output is correct
107	Correct	422 ms	33472 KB	Output is correct
108	Correct	431 ms	33492 KB	Output is correct
109	Correct	445 ms	33476 KB	Output is correct
110	Correct	628 ms	33488 KB	Output is correct
111	Correct	643 ms	33472 KB	Output is correct
112	Correct	626 ms	33488 KB	Output is correct
113	Correct	637 ms	33472 KB	Output is correct
114	Correct	642 ms	33476 KB	Output is correct
115	Correct	658 ms	33488 KB	Output is correct
116	Correct	626 ms	33448 KB	Output is correct
117	Correct	677 ms	33472 KB	Output is correct
118	Correct	621 ms	33476 KB	Output is correct
119	Correct	626 ms	33472 KB	Output is correct
120	Correct	2 ms	384 KB	Output is correct
121	Correct	2 ms	384 KB	Output is correct
122	Correct	684 ms	33472 KB	Output is correct
123	Correct	686 ms	33472 KB	Output is correct
124	Correct	672 ms	33492 KB	Output is correct
125	Correct	670 ms	33528 KB	Output is correct
126	Correct	669 ms	33472 KB	Output is correct
127	Correct	681 ms	33600 KB	Output is correct
128	Correct	678 ms	33492 KB	Output is correct
129	Correct	678 ms	33472 KB	Output is correct
130	Correct	691 ms	33476 KB	Output is correct
131	Correct	675 ms	33472 KB	Output is correct
132	Correct	768 ms	33472 KB	Output is correct
133	Correct	667 ms	33472 KB	Output is correct

답안 #93197

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 20.0 / 20.0

Subtask #3 35.0 / 35.0

Subtask #4 20.0 / 20.0

Subtask #5 20.0 / 20.0

Subtask #1
5.0 / 5.0

Subtask #2
20.0 / 20.0

Subtask #3
35.0 / 35.0

Subtask #4
20.0 / 20.0

Subtask #5
20.0 / 20.0