oj.uz

Submission #590533

# Submission time Handle Problem Language Result Execution time Memory
590533 2022-07-06T05:35:51 Z 이동현(#8415) Bulldozer (JOI17_bulldozer) C++17
100 / 100
 792 ms 32040 KB 
#include <bits/stdc++.h>
using namespace std;

const int NS = 2004;
int n;
vector<int> a[2004];
struct Line{
    int id1, id2, dx, dy;
    Line(){}
    Line(int id1, int id2, int dx, int dy):id1(id1), id2(id2), dx(dx), dy(dy){}
    bool operator<(const Line&r)const{
        if((long long)dx * r.dy < (long long)r.dx * dy) return 1;
        else if((long long)dx * r.dy == (long long)r.dx * dy && make_pair(id1, id2) < make_pair(r.id1, r.id2)) return 1;
        return 0;
    }
};
Line srt[2004 * 2004];
int pos[2004];
int srtN;

long long tr[NS * 4], lmax[NS * 4], rmax[NS * 4], sum[NS * 4];

void push(int x, int s, int e, int p, int val){
    if(p < s || p > e) return;
    if(s == e){
        tr[x] += val; sum[x] += val;
        lmax[x] = rmax[x] = max(0ll, tr[x]);
        return;
    }
    int m = s + e >> 1;
    push(x * 2, s, m, p, val), push(x * 2 + 1, m + 1, e, p, val);
    tr[x] = max({tr[x * 2], tr[x * 2 + 1], rmax[x * 2] + lmax[x * 2 + 1]});
    rmax[x] = max({rmax[x * 2 + 1], sum[x * 2 + 1] + rmax[x * 2]});
    lmax[x] = max({lmax[x * 2], sum[x * 2] + lmax[x * 2 + 1]});
    sum[x] = sum[x * 2] + sum[x * 2 + 1];
}

signed main(){
    cin >> n;
    for(int i = 0; i < n; ++i){
        a[i].resize(3);
        cin >> a[i][0] >> a[i][1] >> a[i][2];
    }
    if(n == 1){
        cout << max(0, a[0][2]) << '\n';
        return 0;
    }
    sort(a, a + n);
    for(int i = 0; i < n; ++i){
        for(int j = i + 1; j < n; ++j){
            srt[srtN++] = Line(i, j, a[j][0] - a[i][0], a[j][1] - a[i][1]);
        }
    }
    sort(srt, srt + srtN);
    for(int i = 0; i < n; ++i){
        pos[i] = i;
        push(1, 0, n - 1, i, a[i][2]);
    }
    long long ans = 0;
    for(int i = 0; i < srtN;){
        int j = i;
        while(j < srtN && srt[i].dx * srt[j].dy == srt[i].dy * srt[j].dx){
            ++j;
        }
        ans = max(ans, tr[1]);
        for(int k = i; k < j; ++k){
            swap(pos[srt[k].id1], pos[srt[k].id2]);
            push(1, 0, n - 1, pos[srt[k].id1], a[srt[k].id1][2] - a[srt[k].id2][2]);
            push(1, 0, n - 1, pos[srt[k].id2], a[srt[k].id2][2] - a[srt[k].id1][2]);
        }
        ans = max(ans, tr[1]);
        i = j;
    }
    cout << ans << '\n';
    return 0;
}

Compilation message

bulldozer.cpp: In function 'void push(int, int, int, int, int)':
bulldozer.cpp:30:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   30 |     int m = s + e >> 1;
      |             ~~^~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 468 KB Output is correct
2 Correct 2 ms 468 KB Output is correct
3 Correct 1 ms 464 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 468 KB Output is correct
7 Correct 1 ms 468 KB Output is correct
8 Correct 3 ms 468 KB Output is correct
9 Correct 1 ms 468 KB Output is correct
10 Correct 2 ms 468 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 468 KB Output is correct
2 Correct 2 ms 468 KB Output is correct
3 Correct 2 ms 468 KB Output is correct
4 Correct 2 ms 468 KB Output is correct
5 Correct 2 ms 468 KB Output is correct
6 Correct 3 ms 468 KB Output is correct
7 Correct 2 ms 452 KB Output is correct
8 Correct 2 ms 468 KB Output is correct
9 Correct 2 ms 468 KB Output is correct
10 Correct 2 ms 468 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 356 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 1 ms 356 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 2 ms 356 KB Output is correct
22 Correct 2 ms 468 KB Output is correct
23 Correct 2 ms 468 KB Output is correct
24 Correct 2 ms 468 KB Output is correct
25 Correct 2 ms 468 KB Output is correct
26 Correct 2 ms 468 KB Output is correct
27 Correct 2 ms 468 KB Output is correct
28 Correct 1 ms 468 KB Output is correct
29 Correct 2 ms 468 KB Output is correct
30 Correct 2 ms 468 KB Output is correct
31 Correct 1 ms 468 KB Output is correct
32 Correct 2 ms 468 KB Output is correct

Subtask #3
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 468 KB Output is correct
2 Correct 2 ms 468 KB Output is correct
3 Correct 2 ms 468 KB Output is correct
4 Correct 2 ms 468 KB Output is correct
5 Correct 2 ms 468 KB Output is correct
6 Correct 3 ms 468 KB Output is correct
7 Correct 2 ms 452 KB Output is correct
8 Correct 2 ms 468 KB Output is correct
9 Correct 2 ms 468 KB Output is correct
10 Correct 2 ms 468 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 356 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 1 ms 356 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 2 ms 356 KB Output is correct
22 Correct 2 ms 468 KB Output is correct
23 Correct 2 ms 468 KB Output is correct
24 Correct 2 ms 468 KB Output is correct
25 Correct 2 ms 468 KB Output is correct
26 Correct 2 ms 468 KB Output is correct
27 Correct 2 ms 468 KB Output is correct
28 Correct 1 ms 468 KB Output is correct
29 Correct 2 ms 468 KB Output is correct
30 Correct 2 ms 468 KB Output is correct
31 Correct 1 ms 468 KB Output is correct
32 Correct 2 ms 468 KB Output is correct
33 Correct 731 ms 31832 KB Output is correct
34 Correct 737 ms 31988 KB Output is correct
35 Correct 755 ms 31896 KB Output is correct
36 Correct 734 ms 31912 KB Output is correct
37 Correct 731 ms 31912 KB Output is correct
38 Correct 715 ms 31916 KB Output is correct
39 Correct 725 ms 31820 KB Output is correct
40 Correct 724 ms 31932 KB Output is correct
41 Correct 751 ms 31916 KB Output is correct
42 Correct 717 ms 31912 KB Output is correct
43 Correct 741 ms 31912 KB Output is correct
44 Correct 737 ms 31912 KB Output is correct
45 Correct 727 ms 31916 KB Output is correct
46 Correct 733 ms 31912 KB Output is correct
47 Correct 722 ms 31892 KB Output is correct
48 Correct 736 ms 31920 KB Output is correct
49 Correct 726 ms 32040 KB Output is correct
50 Correct 719 ms 32020 KB Output is correct
51 Correct 775 ms 31912 KB Output is correct
52 Correct 772 ms 31916 KB Output is correct
53 Correct 742 ms 31916 KB Output is correct
54 Correct 721 ms 31920 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 468 KB Output is correct
2 Correct 2 ms 468 KB Output is correct
3 Correct 2 ms 468 KB Output is correct
4 Correct 2 ms 468 KB Output is correct
5 Correct 2 ms 468 KB Output is correct
6 Correct 3 ms 468 KB Output is correct
7 Correct 2 ms 452 KB Output is correct
8 Correct 2 ms 468 KB Output is correct
9 Correct 2 ms 468 KB Output is correct
10 Correct 2 ms 468 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 356 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 1 ms 356 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 2 ms 356 KB Output is correct
22 Correct 2 ms 468 KB Output is correct
23 Correct 2 ms 468 KB Output is correct
24 Correct 2 ms 468 KB Output is correct
25 Correct 2 ms 468 KB Output is correct
26 Correct 2 ms 468 KB Output is correct
27 Correct 2 ms 468 KB Output is correct
28 Correct 1 ms 468 KB Output is correct
29 Correct 2 ms 468 KB Output is correct
30 Correct 2 ms 468 KB Output is correct
31 Correct 1 ms 468 KB Output is correct
32 Correct 2 ms 468 KB Output is correct
33 Correct 731 ms 31832 KB Output is correct
34 Correct 737 ms 31988 KB Output is correct
35 Correct 755 ms 31896 KB Output is correct
36 Correct 734 ms 31912 KB Output is correct
37 Correct 731 ms 31912 KB Output is correct
38 Correct 715 ms 31916 KB Output is correct
39 Correct 725 ms 31820 KB Output is correct
40 Correct 724 ms 31932 KB Output is correct
41 Correct 751 ms 31916 KB Output is correct
42 Correct 717 ms 31912 KB Output is correct
43 Correct 741 ms 31912 KB Output is correct
44 Correct 737 ms 31912 KB Output is correct
45 Correct 727 ms 31916 KB Output is correct
46 Correct 733 ms 31912 KB Output is correct
47 Correct 722 ms 31892 KB Output is correct
48 Correct 736 ms 31920 KB Output is correct
49 Correct 726 ms 32040 KB Output is correct
50 Correct 719 ms 32020 KB Output is correct
51 Correct 775 ms 31912 KB Output is correct
52 Correct 772 ms 31916 KB Output is correct
53 Correct 742 ms 31916 KB Output is correct
54 Correct 721 ms 31920 KB Output is correct
55 Correct 723 ms 31908 KB Output is correct
56 Correct 740 ms 31900 KB Output is correct
57 Correct 729 ms 31916 KB Output is correct
58 Correct 733 ms 31920 KB Output is correct
59 Correct 716 ms 31916 KB Output is correct
60 Correct 734 ms 31916 KB Output is correct
61 Correct 724 ms 31912 KB Output is correct
62 Correct 734 ms 31912 KB Output is correct
63 Correct 712 ms 32028 KB Output is correct
64 Correct 736 ms 31912 KB Output is correct
65 Correct 735 ms 31912 KB Output is correct
66 Correct 733 ms 31920 KB Output is correct
67 Correct 728 ms 31916 KB Output is correct
68 Correct 740 ms 31900 KB Output is correct
69 Correct 724 ms 31900 KB Output is correct
70 Correct 721 ms 31916 KB Output is correct
71 Correct 732 ms 31916 KB Output is correct
72 Correct 747 ms 31908 KB Output is correct
73 Correct 716 ms 31912 KB Output is correct
74 Correct 724 ms 31948 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 468 KB Output is correct
2 Correct 2 ms 468 KB Output is correct
3 Correct 1 ms 464 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 468 KB Output is correct
7 Correct 1 ms 468 KB Output is correct
8 Correct 3 ms 468 KB Output is correct
9 Correct 1 ms 468 KB Output is correct
10 Correct 2 ms 468 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 2 ms 468 KB Output is correct
17 Correct 2 ms 468 KB Output is correct
18 Correct 2 ms 468 KB Output is correct
19 Correct 2 ms 468 KB Output is correct
20 Correct 2 ms 468 KB Output is correct
21 Correct 3 ms 468 KB Output is correct
22 Correct 2 ms 452 KB Output is correct
23 Correct 2 ms 468 KB Output is correct
24 Correct 2 ms 468 KB Output is correct
25 Correct 2 ms 468 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 356 KB Output is correct
28 Correct 0 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 0 ms 340 KB Output is correct
34 Correct 1 ms 356 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 2 ms 356 KB Output is correct
37 Correct 2 ms 468 KB Output is correct
38 Correct 2 ms 468 KB Output is correct
39 Correct 2 ms 468 KB Output is correct
40 Correct 2 ms 468 KB Output is correct
41 Correct 2 ms 468 KB Output is correct
42 Correct 2 ms 468 KB Output is correct
43 Correct 1 ms 468 KB Output is correct
44 Correct 2 ms 468 KB Output is correct
45 Correct 2 ms 468 KB Output is correct
46 Correct 1 ms 468 KB Output is correct
47 Correct 2 ms 468 KB Output is correct
48 Correct 731 ms 31832 KB Output is correct
49 Correct 737 ms 31988 KB Output is correct
50 Correct 755 ms 31896 KB Output is correct
51 Correct 734 ms 31912 KB Output is correct
52 Correct 731 ms 31912 KB Output is correct
53 Correct 715 ms 31916 KB Output is correct
54 Correct 725 ms 31820 KB Output is correct
55 Correct 724 ms 31932 KB Output is correct
56 Correct 751 ms 31916 KB Output is correct
57 Correct 717 ms 31912 KB Output is correct
58 Correct 741 ms 31912 KB Output is correct
59 Correct 737 ms 31912 KB Output is correct
60 Correct 727 ms 31916 KB Output is correct
61 Correct 733 ms 31912 KB Output is correct
62 Correct 722 ms 31892 KB Output is correct
63 Correct 736 ms 31920 KB Output is correct
64 Correct 726 ms 32040 KB Output is correct
65 Correct 719 ms 32020 KB Output is correct
66 Correct 775 ms 31912 KB Output is correct
67 Correct 772 ms 31916 KB Output is correct
68 Correct 742 ms 31916 KB Output is correct
69 Correct 721 ms 31920 KB Output is correct
70 Correct 723 ms 31908 KB Output is correct
71 Correct 740 ms 31900 KB Output is correct
72 Correct 729 ms 31916 KB Output is correct
73 Correct 733 ms 31920 KB Output is correct
74 Correct 716 ms 31916 KB Output is correct
75 Correct 734 ms 31916 KB Output is correct
76 Correct 724 ms 31912 KB Output is correct
77 Correct 734 ms 31912 KB Output is correct
78 Correct 712 ms 32028 KB Output is correct
79 Correct 736 ms 31912 KB Output is correct
80 Correct 735 ms 31912 KB Output is correct
81 Correct 733 ms 31920 KB Output is correct
82 Correct 728 ms 31916 KB Output is correct
83 Correct 740 ms 31900 KB Output is correct
84 Correct 724 ms 31900 KB Output is correct
85 Correct 721 ms 31916 KB Output is correct
86 Correct 732 ms 31916 KB Output is correct
87 Correct 747 ms 31908 KB Output is correct
88 Correct 716 ms 31912 KB Output is correct
89 Correct 724 ms 31948 KB Output is correct
90 Correct 746 ms 31916 KB Output is correct
91 Correct 752 ms 31916 KB Output is correct
92 Correct 722 ms 32024 KB Output is correct
93 Correct 744 ms 31912 KB Output is correct
94 Correct 738 ms 31916 KB Output is correct
95 Correct 737 ms 31912 KB Output is correct
96 Correct 726 ms 31916 KB Output is correct
97 Correct 745 ms 32020 KB Output is correct
98 Correct 735 ms 31912 KB Output is correct
99 Correct 730 ms 31916 KB Output is correct
100 Correct 634 ms 31896 KB Output is correct
101 Correct 631 ms 31820 KB Output is correct
102 Correct 639 ms 32008 KB Output is correct
103 Correct 613 ms 31892 KB Output is correct
104 Correct 660 ms 31900 KB Output is correct
105 Correct 677 ms 31880 KB Output is correct
106 Correct 638 ms 31980 KB Output is correct
107 Correct 627 ms 31912 KB Output is correct
108 Correct 668 ms 31900 KB Output is correct
109 Correct 647 ms 31900 KB Output is correct
110 Correct 684 ms 31892 KB Output is correct
111 Correct 672 ms 31888 KB Output is correct
112 Correct 694 ms 31888 KB Output is correct
113 Correct 696 ms 32000 KB Output is correct
114 Correct 712 ms 31892 KB Output is correct
115 Correct 685 ms 31888 KB Output is correct
116 Correct 694 ms 32016 KB Output is correct
117 Correct 689 ms 31892 KB Output is correct
118 Correct 716 ms 31908 KB Output is correct
119 Correct 732 ms 31896 KB Output is correct
120 Correct 0 ms 340 KB Output is correct
121 Correct 0 ms 340 KB Output is correct
122 Correct 720 ms 32024 KB Output is correct
123 Correct 735 ms 31916 KB Output is correct
124 Correct 783 ms 31916 KB Output is correct
125 Correct 777 ms 32028 KB Output is correct
126 Correct 723 ms 31948 KB Output is correct
127 Correct 721 ms 31912 KB Output is correct
128 Correct 792 ms 31916 KB Output is correct
129 Correct 740 ms 31912 KB Output is correct
130 Correct 735 ms 31916 KB Output is correct
131 Correct 715 ms 31916 KB Output is correct
132 Correct 740 ms 31916 KB Output is correct
133 Correct 730 ms 31912 KB Output is correct