oj.uz

답안 #947938

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
947938 2024-03-17T09:32:27 Z ha819ha Bulldozer (JOI17_bulldozer) C++17
100 / 100
 632 ms 66532 KB 
#include <bits/stdc++.h>
using namespace std;

using ll = long long;
using pll = pair<ll, ll>;

#define x first
#define y second
#define all(v) (v).begin(), (v).end()

const int sz = 1<<11;
struct Seg {
    ll dat[sz*2], sf[sz*2], pf[sz*2], mx[sz*2];

    void update(int x, ll v) {
        dat[x+=sz] = v;
        pf[x]=sf[x]=mx[x]=max(0LL, v);
        for(x/=2;x;x/=2) {
            pf[x] = max(pf[2*x], dat[2*x]+pf[2*x+1]);
            sf[x] = max(sf[2*x+1], dat[2*x+1]+sf[2*x]);
            mx[x] = max({mx[2*x],mx[2*x+1], sf[2*x]+pf[2*x+1]});
            dat[x] = dat[2*x]+dat[2*x+1];
        }
    }
    ll get() {
        return mx[1];
    }
} S;

struct Point {
    ll x,y,v;

    bool operator < (const Point& rhs) const {
        return pll(x, y) < pll(rhs.x, rhs.y);
    }
};

struct Line {
    ll dx,dy,i,j;

    bool operator < (const Line& rhs) const {
        ll l = dy*rhs.dx, r = dx*rhs.dy;
        return tie(l, i, j) < tie(r, rhs.i, rhs.j);
    }

    bool operator == (const Line& rhs) const { 
        ll l = dy*rhs.dx, r = dx*rhs.dy;
        return l==r;
    }
};

int main(void){
    cin.tie(0)->sync_with_stdio(0);

    int n; cin>>n;
    vector<Point> p(n);
    for(auto& [x,y,v]:p) cin>>x>>y>>v;

    sort(all(p));
    vector<int> pos(n);

    vector<Line> lines;

    for(int i=0;i<n;i++) {
        for(int j=i+1;j<n;j++) {
            ll dx = p[j].x-p[i].x;
            ll dy = p[j].y-p[i].y;
            if (dx < 0 || (dx == 0 && dy < 0))dx = -dx, dy = -dy;
            lines.push_back({dx,dy,i,j});
        }
    }

    for(int i=0;i<n;i++) {
        S.update(i, p[i].v);
        pos[i]=i;
    }

    sort(all(lines));
    ll ans = S.get();

    for(int i=0;i<lines.size();i++) {
        int a = lines[i].i, b = lines[i].j;
        swap(pos[a], pos[b]);

        S.update(pos[a], p[a].v);
        S.update(pos[b], p[b].v);

        if(i+1<lines.size() && lines[i] == lines[i+1]) continue;

        ans = max(ans, S.get());
    }
    cout<<ans;
}

Compilation message

bulldozer.cpp: In function 'int main()':
bulldozer.cpp:81:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Line>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   81 |     for(int i=0;i<lines.size();i++) {
      |                 ~^~~~~~~~~~~~~
bulldozer.cpp:88:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Line>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   88 |         if(i+1<lines.size() && lines[i] == lines[i+1]) continue;
      |            ~~~^~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 860 KB Output is correct
2 Correct 2 ms 860 KB Output is correct
3 Correct 2 ms 860 KB Output is correct
4 Correct 2 ms 828 KB Output is correct
5 Correct 2 ms 860 KB Output is correct
6 Correct 2 ms 860 KB Output is correct
7 Correct 2 ms 860 KB Output is correct
8 Correct 2 ms 860 KB Output is correct
9 Correct 2 ms 860 KB Output is correct
10 Correct 2 ms 860 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 344 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 732 KB Output is correct
2 Correct 2 ms 860 KB Output is correct
3 Correct 2 ms 860 KB Output is correct
4 Correct 2 ms 860 KB Output is correct
5 Correct 2 ms 732 KB Output is correct
6 Correct 2 ms 732 KB Output is correct
7 Correct 2 ms 856 KB Output is correct
8 Correct 2 ms 860 KB Output is correct
9 Correct 2 ms 732 KB Output is correct
10 Correct 2 ms 860 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 600 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 0 ms 344 KB Output is correct
21 Correct 2 ms 860 KB Output is correct
22 Correct 2 ms 860 KB Output is correct
23 Correct 2 ms 860 KB Output is correct
24 Correct 2 ms 860 KB Output is correct
25 Correct 2 ms 860 KB Output is correct
26 Correct 2 ms 860 KB Output is correct
27 Correct 2 ms 860 KB Output is correct
28 Correct 2 ms 860 KB Output is correct
29 Correct 2 ms 1048 KB Output is correct
30 Correct 2 ms 856 KB Output is correct
31 Correct 2 ms 860 KB Output is correct
32 Correct 2 ms 860 KB Output is correct

Subtask #3
35.0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 732 KB Output is correct
2 Correct 2 ms 860 KB Output is correct
3 Correct 2 ms 860 KB Output is correct
4 Correct 2 ms 860 KB Output is correct
5 Correct 2 ms 732 KB Output is correct
6 Correct 2 ms 732 KB Output is correct
7 Correct 2 ms 856 KB Output is correct
8 Correct 2 ms 860 KB Output is correct
9 Correct 2 ms 732 KB Output is correct
10 Correct 2 ms 860 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 600 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 0 ms 344 KB Output is correct
21 Correct 2 ms 860 KB Output is correct
22 Correct 2 ms 860 KB Output is correct
23 Correct 2 ms 860 KB Output is correct
24 Correct 2 ms 860 KB Output is correct
25 Correct 2 ms 860 KB Output is correct
26 Correct 2 ms 860 KB Output is correct
27 Correct 2 ms 860 KB Output is correct
28 Correct 2 ms 860 KB Output is correct
29 Correct 2 ms 1048 KB Output is correct
30 Correct 2 ms 856 KB Output is correct
31 Correct 2 ms 860 KB Output is correct
32 Correct 2 ms 860 KB Output is correct
33 Correct 602 ms 66248 KB Output is correct
34 Correct 583 ms 66204 KB Output is correct
35 Correct 600 ms 66208 KB Output is correct
36 Correct 587 ms 66204 KB Output is correct
37 Correct 592 ms 66216 KB Output is correct
38 Correct 594 ms 66204 KB Output is correct
39 Correct 585 ms 66200 KB Output is correct
40 Correct 603 ms 66116 KB Output is correct
41 Correct 600 ms 66180 KB Output is correct
42 Correct 590 ms 66212 KB Output is correct
43 Correct 605 ms 66056 KB Output is correct
44 Correct 579 ms 66176 KB Output is correct
45 Correct 593 ms 66084 KB Output is correct
46 Correct 605 ms 66168 KB Output is correct
47 Correct 603 ms 66172 KB Output is correct
48 Correct 593 ms 66240 KB Output is correct
49 Correct 586 ms 66200 KB Output is correct
50 Correct 590 ms 66172 KB Output is correct
51 Correct 588 ms 66200 KB Output is correct
52 Correct 604 ms 66176 KB Output is correct
53 Correct 616 ms 66304 KB Output is correct
54 Correct 603 ms 66220 KB Output is correct

Subtask #4
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 732 KB Output is correct
2 Correct 2 ms 860 KB Output is correct
3 Correct 2 ms 860 KB Output is correct
4 Correct 2 ms 860 KB Output is correct
5 Correct 2 ms 732 KB Output is correct
6 Correct 2 ms 732 KB Output is correct
7 Correct 2 ms 856 KB Output is correct
8 Correct 2 ms 860 KB Output is correct
9 Correct 2 ms 732 KB Output is correct
10 Correct 2 ms 860 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 600 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 0 ms 344 KB Output is correct
21 Correct 2 ms 860 KB Output is correct
22 Correct 2 ms 860 KB Output is correct
23 Correct 2 ms 860 KB Output is correct
24 Correct 2 ms 860 KB Output is correct
25 Correct 2 ms 860 KB Output is correct
26 Correct 2 ms 860 KB Output is correct
27 Correct 2 ms 860 KB Output is correct
28 Correct 2 ms 860 KB Output is correct
29 Correct 2 ms 1048 KB Output is correct
30 Correct 2 ms 856 KB Output is correct
31 Correct 2 ms 860 KB Output is correct
32 Correct 2 ms 860 KB Output is correct
33 Correct 602 ms 66248 KB Output is correct
34 Correct 583 ms 66204 KB Output is correct
35 Correct 600 ms 66208 KB Output is correct
36 Correct 587 ms 66204 KB Output is correct
37 Correct 592 ms 66216 KB Output is correct
38 Correct 594 ms 66204 KB Output is correct
39 Correct 585 ms 66200 KB Output is correct
40 Correct 603 ms 66116 KB Output is correct
41 Correct 600 ms 66180 KB Output is correct
42 Correct 590 ms 66212 KB Output is correct
43 Correct 605 ms 66056 KB Output is correct
44 Correct 579 ms 66176 KB Output is correct
45 Correct 593 ms 66084 KB Output is correct
46 Correct 605 ms 66168 KB Output is correct
47 Correct 603 ms 66172 KB Output is correct
48 Correct 593 ms 66240 KB Output is correct
49 Correct 586 ms 66200 KB Output is correct
50 Correct 590 ms 66172 KB Output is correct
51 Correct 588 ms 66200 KB Output is correct
52 Correct 604 ms 66176 KB Output is correct
53 Correct 616 ms 66304 KB Output is correct
54 Correct 603 ms 66220 KB Output is correct
55 Correct 586 ms 66172 KB Output is correct
56 Correct 584 ms 66372 KB Output is correct
57 Correct 595 ms 66200 KB Output is correct
58 Correct 597 ms 66176 KB Output is correct
59 Correct 587 ms 66224 KB Output is correct
60 Correct 588 ms 66200 KB Output is correct
61 Correct 591 ms 66216 KB Output is correct
62 Correct 594 ms 66132 KB Output is correct
63 Correct 591 ms 66232 KB Output is correct
64 Correct 596 ms 66512 KB Output is correct
65 Correct 588 ms 66176 KB Output is correct
66 Correct 592 ms 66304 KB Output is correct
67 Correct 586 ms 66172 KB Output is correct
68 Correct 597 ms 66340 KB Output is correct
69 Correct 589 ms 66176 KB Output is correct
70 Correct 600 ms 66276 KB Output is correct
71 Correct 585 ms 66096 KB Output is correct
72 Correct 600 ms 66268 KB Output is correct
73 Correct 596 ms 66208 KB Output is correct
74 Correct 606 ms 66176 KB Output is correct

Subtask #5
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 860 KB Output is correct
2 Correct 2 ms 860 KB Output is correct
3 Correct 2 ms 860 KB Output is correct
4 Correct 2 ms 828 KB Output is correct
5 Correct 2 ms 860 KB Output is correct
6 Correct 2 ms 860 KB Output is correct
7 Correct 2 ms 860 KB Output is correct
8 Correct 2 ms 860 KB Output is correct
9 Correct 2 ms 860 KB Output is correct
10 Correct 2 ms 860 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 2 ms 732 KB Output is correct
17 Correct 2 ms 860 KB Output is correct
18 Correct 2 ms 860 KB Output is correct
19 Correct 2 ms 860 KB Output is correct
20 Correct 2 ms 732 KB Output is correct
21 Correct 2 ms 732 KB Output is correct
22 Correct 2 ms 856 KB Output is correct
23 Correct 2 ms 860 KB Output is correct
24 Correct 2 ms 732 KB Output is correct
25 Correct 2 ms 860 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 0 ms 600 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 344 KB Output is correct
35 Correct 0 ms 344 KB Output is correct
36 Correct 2 ms 860 KB Output is correct
37 Correct 2 ms 860 KB Output is correct
38 Correct 2 ms 860 KB Output is correct
39 Correct 2 ms 860 KB Output is correct
40 Correct 2 ms 860 KB Output is correct
41 Correct 2 ms 860 KB Output is correct
42 Correct 2 ms 860 KB Output is correct
43 Correct 2 ms 860 KB Output is correct
44 Correct 2 ms 1048 KB Output is correct
45 Correct 2 ms 856 KB Output is correct
46 Correct 2 ms 860 KB Output is correct
47 Correct 2 ms 860 KB Output is correct
48 Correct 602 ms 66248 KB Output is correct
49 Correct 583 ms 66204 KB Output is correct
50 Correct 600 ms 66208 KB Output is correct
51 Correct 587 ms 66204 KB Output is correct
52 Correct 592 ms 66216 KB Output is correct
53 Correct 594 ms 66204 KB Output is correct
54 Correct 585 ms 66200 KB Output is correct
55 Correct 603 ms 66116 KB Output is correct
56 Correct 600 ms 66180 KB Output is correct
57 Correct 590 ms 66212 KB Output is correct
58 Correct 605 ms 66056 KB Output is correct
59 Correct 579 ms 66176 KB Output is correct
60 Correct 593 ms 66084 KB Output is correct
61 Correct 605 ms 66168 KB Output is correct
62 Correct 603 ms 66172 KB Output is correct
63 Correct 593 ms 66240 KB Output is correct
64 Correct 586 ms 66200 KB Output is correct
65 Correct 590 ms 66172 KB Output is correct
66 Correct 588 ms 66200 KB Output is correct
67 Correct 604 ms 66176 KB Output is correct
68 Correct 616 ms 66304 KB Output is correct
69 Correct 603 ms 66220 KB Output is correct
70 Correct 586 ms 66172 KB Output is correct
71 Correct 584 ms 66372 KB Output is correct
72 Correct 595 ms 66200 KB Output is correct
73 Correct 597 ms 66176 KB Output is correct
74 Correct 587 ms 66224 KB Output is correct
75 Correct 588 ms 66200 KB Output is correct
76 Correct 591 ms 66216 KB Output is correct
77 Correct 594 ms 66132 KB Output is correct
78 Correct 591 ms 66232 KB Output is correct
79 Correct 596 ms 66512 KB Output is correct
80 Correct 588 ms 66176 KB Output is correct
81 Correct 592 ms 66304 KB Output is correct
82 Correct 586 ms 66172 KB Output is correct
83 Correct 597 ms 66340 KB Output is correct
84 Correct 589 ms 66176 KB Output is correct
85 Correct 600 ms 66276 KB Output is correct
86 Correct 585 ms 66096 KB Output is correct
87 Correct 600 ms 66268 KB Output is correct
88 Correct 596 ms 66208 KB Output is correct
89 Correct 606 ms 66176 KB Output is correct
90 Correct 599 ms 66180 KB Output is correct
91 Correct 591 ms 66104 KB Output is correct
92 Correct 606 ms 66224 KB Output is correct
93 Correct 594 ms 66252 KB Output is correct
94 Correct 589 ms 66084 KB Output is correct
95 Correct 592 ms 66324 KB Output is correct
96 Correct 586 ms 66152 KB Output is correct
97 Correct 593 ms 66208 KB Output is correct
98 Correct 586 ms 66204 KB Output is correct
99 Correct 585 ms 66204 KB Output is correct
100 Correct 520 ms 66108 KB Output is correct
101 Correct 517 ms 66204 KB Output is correct
102 Correct 520 ms 66200 KB Output is correct
103 Correct 531 ms 66172 KB Output is correct
104 Correct 516 ms 66180 KB Output is correct
105 Correct 536 ms 66312 KB Output is correct
106 Correct 534 ms 66204 KB Output is correct
107 Correct 526 ms 66204 KB Output is correct
108 Correct 537 ms 66176 KB Output is correct
109 Correct 538 ms 66208 KB Output is correct
110 Correct 594 ms 66200 KB Output is correct
111 Correct 602 ms 66200 KB Output is correct
112 Correct 599 ms 66200 KB Output is correct
113 Correct 593 ms 66176 KB Output is correct
114 Correct 602 ms 66084 KB Output is correct
115 Correct 602 ms 66200 KB Output is correct
116 Correct 606 ms 66172 KB Output is correct
117 Correct 601 ms 66204 KB Output is correct
118 Correct 632 ms 66176 KB Output is correct
119 Correct 605 ms 66204 KB Output is correct
120 Correct 0 ms 344 KB Output is correct
121 Correct 0 ms 348 KB Output is correct
122 Correct 609 ms 66164 KB Output is correct
123 Correct 624 ms 66200 KB Output is correct
124 Correct 605 ms 66200 KB Output is correct
125 Correct 598 ms 66176 KB Output is correct
126 Correct 589 ms 66220 KB Output is correct
127 Correct 597 ms 66112 KB Output is correct
128 Correct 588 ms 66236 KB Output is correct
129 Correct 596 ms 66532 KB Output is correct
130 Correct 587 ms 66204 KB Output is correct
131 Correct 607 ms 66204 KB Output is correct
132 Correct 621 ms 66116 KB Output is correct
133 Correct 592 ms 66212 KB Output is correct