oj.uz

Submission #947936

# Submission time Handle Problem Language Result Execution time Memory
947936 2024-03-17T09:31:02 Z ha819ha Bulldozer (JOI17_bulldozer) C++17
100 / 100
 588 ms 66712 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 = 2020;
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;

const int SZ = 2048;
struct Tree {
	long long L[SZ + SZ], R[SZ + SZ], S[SZ + SZ], M[SZ + SZ];
	void Put(int a, int b) {
		a += SZ;
		S[a] = b;
		L[a] = R[a] = M[a] = max(0, b);
		while (a != 1) {
			a >>= 1;
			S[a] = S[a + a] + S[a + a + 1];
			L[a] = max(L[a + a], S[a + a] + L[a + a + 1]);
			R[a] = max(R[a + a + 1], S[a + a + 1] + R[a + a]);
			M[a] = max(max(M[a + a], M[a + a + 1]), R[a + a] + L[a + a + 1]);
		}
	}
}T;

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++) {
        T.Put(i, p[i].v);
        pos[i]=i;
    }

    sort(all(lines));
    ll ans = T.M[1];

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

        T.Put(pos[a], p[a].v);
        T.Put(pos[b], p[b].v);

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

        ans = max(ans, T.M[1]);
    }
    cout<<ans;
}

Compilation message

bulldozer.cpp: In function 'int main()':
bulldozer.cpp:98:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Line>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   98 |     for(int i=0;i<lines.size();i++) {
      |                 ~^~~~~~~~~~~~~
bulldozer.cpp:105:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Line>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  105 |         if(i+1<lines.size() && lines[i] == lines[i+1]) continue;
      |            ~~~^~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 856 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 860 KB Output is correct
6 Correct 2 ms 860 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 860 KB Output is correct
10 Correct 2 ms 980 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 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 856 KB Output is correct
2 Correct 2 ms 860 KB Output is correct
3 Correct 2 ms 856 KB Output is correct
4 Correct 2 ms 860 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 344 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 360 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 2 ms 860 KB Output is correct
22 Correct 2 ms 1052 KB Output is correct
23 Correct 2 ms 860 KB Output is correct
24 Correct 5 ms 860 KB Output is correct
25 Correct 2 ms 860 KB Output is correct
26 Correct 2 ms 856 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 860 KB Output is correct
30 Correct 2 ms 860 KB Output is correct
31 Correct 2 ms 856 KB Output is correct
32 Correct 2 ms 860 KB Output is correct

Subtask #3
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 856 KB Output is correct
2 Correct 2 ms 860 KB Output is correct
3 Correct 2 ms 856 KB Output is correct
4 Correct 2 ms 860 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 344 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 360 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 2 ms 860 KB Output is correct
22 Correct 2 ms 1052 KB Output is correct
23 Correct 2 ms 860 KB Output is correct
24 Correct 5 ms 860 KB Output is correct
25 Correct 2 ms 860 KB Output is correct
26 Correct 2 ms 856 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 860 KB Output is correct
30 Correct 2 ms 860 KB Output is correct
31 Correct 2 ms 856 KB Output is correct
32 Correct 2 ms 860 KB Output is correct
33 Correct 557 ms 66064 KB Output is correct
34 Correct 555 ms 66200 KB Output is correct
35 Correct 588 ms 66200 KB Output is correct
36 Correct 545 ms 66204 KB Output is correct
37 Correct 568 ms 66488 KB Output is correct
38 Correct 543 ms 66172 KB Output is correct
39 Correct 568 ms 66204 KB Output is correct
40 Correct 546 ms 66172 KB Output is correct
41 Correct 550 ms 66312 KB Output is correct
42 Correct 544 ms 66172 KB Output is correct
43 Correct 549 ms 66196 KB Output is correct
44 Correct 545 ms 66712 KB Output is correct
45 Correct 545 ms 66224 KB Output is correct
46 Correct 563 ms 66212 KB Output is correct
47 Correct 542 ms 66360 KB Output is correct
48 Correct 563 ms 66252 KB Output is correct
49 Correct 554 ms 66200 KB Output is correct
50 Correct 546 ms 66156 KB Output is correct
51 Correct 547 ms 66684 KB Output is correct
52 Correct 555 ms 66172 KB Output is correct
53 Correct 549 ms 66180 KB Output is correct
54 Correct 543 ms 66172 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 856 KB Output is correct
2 Correct 2 ms 860 KB Output is correct
3 Correct 2 ms 856 KB Output is correct
4 Correct 2 ms 860 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 344 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 360 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 2 ms 860 KB Output is correct
22 Correct 2 ms 1052 KB Output is correct
23 Correct 2 ms 860 KB Output is correct
24 Correct 5 ms 860 KB Output is correct
25 Correct 2 ms 860 KB Output is correct
26 Correct 2 ms 856 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 860 KB Output is correct
30 Correct 2 ms 860 KB Output is correct
31 Correct 2 ms 856 KB Output is correct
32 Correct 2 ms 860 KB Output is correct
33 Correct 557 ms 66064 KB Output is correct
34 Correct 555 ms 66200 KB Output is correct
35 Correct 588 ms 66200 KB Output is correct
36 Correct 545 ms 66204 KB Output is correct
37 Correct 568 ms 66488 KB Output is correct
38 Correct 543 ms 66172 KB Output is correct
39 Correct 568 ms 66204 KB Output is correct
40 Correct 546 ms 66172 KB Output is correct
41 Correct 550 ms 66312 KB Output is correct
42 Correct 544 ms 66172 KB Output is correct
43 Correct 549 ms 66196 KB Output is correct
44 Correct 545 ms 66712 KB Output is correct
45 Correct 545 ms 66224 KB Output is correct
46 Correct 563 ms 66212 KB Output is correct
47 Correct 542 ms 66360 KB Output is correct
48 Correct 563 ms 66252 KB Output is correct
49 Correct 554 ms 66200 KB Output is correct
50 Correct 546 ms 66156 KB Output is correct
51 Correct 547 ms 66684 KB Output is correct
52 Correct 555 ms 66172 KB Output is correct
53 Correct 549 ms 66180 KB Output is correct
54 Correct 543 ms 66172 KB Output is correct
55 Correct 552 ms 66084 KB Output is correct
56 Correct 543 ms 66204 KB Output is correct
57 Correct 553 ms 66168 KB Output is correct
58 Correct 550 ms 66100 KB Output is correct
59 Correct 545 ms 66132 KB Output is correct
60 Correct 547 ms 66208 KB Output is correct
61 Correct 564 ms 66204 KB Output is correct
62 Correct 554 ms 66232 KB Output is correct
63 Correct 549 ms 66200 KB Output is correct
64 Correct 546 ms 66072 KB Output is correct
65 Correct 547 ms 66176 KB Output is correct
66 Correct 557 ms 66236 KB Output is correct
67 Correct 548 ms 66220 KB Output is correct
68 Correct 574 ms 66476 KB Output is correct
69 Correct 551 ms 66268 KB Output is correct
70 Correct 555 ms 66212 KB Output is correct
71 Correct 550 ms 66200 KB Output is correct
72 Correct 557 ms 66176 KB Output is correct
73 Correct 556 ms 66172 KB Output is correct
74 Correct 553 ms 66232 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 856 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 860 KB Output is correct
6 Correct 2 ms 860 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 860 KB Output is correct
10 Correct 2 ms 980 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 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 2 ms 856 KB Output is correct
17 Correct 2 ms 860 KB Output is correct
18 Correct 2 ms 856 KB Output is correct
19 Correct 2 ms 860 KB Output is correct
20 Correct 2 ms 860 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 0 ms 344 KB Output is correct
27 Correct 0 ms 344 KB Output is correct
28 Correct 0 ms 360 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 1 ms 344 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 2 ms 860 KB Output is correct
37 Correct 2 ms 1052 KB Output is correct
38 Correct 2 ms 860 KB Output is correct
39 Correct 5 ms 860 KB Output is correct
40 Correct 2 ms 860 KB Output is correct
41 Correct 2 ms 856 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 860 KB Output is correct
45 Correct 2 ms 860 KB Output is correct
46 Correct 2 ms 856 KB Output is correct
47 Correct 2 ms 860 KB Output is correct
48 Correct 557 ms 66064 KB Output is correct
49 Correct 555 ms 66200 KB Output is correct
50 Correct 588 ms 66200 KB Output is correct
51 Correct 545 ms 66204 KB Output is correct
52 Correct 568 ms 66488 KB Output is correct
53 Correct 543 ms 66172 KB Output is correct
54 Correct 568 ms 66204 KB Output is correct
55 Correct 546 ms 66172 KB Output is correct
56 Correct 550 ms 66312 KB Output is correct
57 Correct 544 ms 66172 KB Output is correct
58 Correct 549 ms 66196 KB Output is correct
59 Correct 545 ms 66712 KB Output is correct
60 Correct 545 ms 66224 KB Output is correct
61 Correct 563 ms 66212 KB Output is correct
62 Correct 542 ms 66360 KB Output is correct
63 Correct 563 ms 66252 KB Output is correct
64 Correct 554 ms 66200 KB Output is correct
65 Correct 546 ms 66156 KB Output is correct
66 Correct 547 ms 66684 KB Output is correct
67 Correct 555 ms 66172 KB Output is correct
68 Correct 549 ms 66180 KB Output is correct
69 Correct 543 ms 66172 KB Output is correct
70 Correct 552 ms 66084 KB Output is correct
71 Correct 543 ms 66204 KB Output is correct
72 Correct 553 ms 66168 KB Output is correct
73 Correct 550 ms 66100 KB Output is correct
74 Correct 545 ms 66132 KB Output is correct
75 Correct 547 ms 66208 KB Output is correct
76 Correct 564 ms 66204 KB Output is correct
77 Correct 554 ms 66232 KB Output is correct
78 Correct 549 ms 66200 KB Output is correct
79 Correct 546 ms 66072 KB Output is correct
80 Correct 547 ms 66176 KB Output is correct
81 Correct 557 ms 66236 KB Output is correct
82 Correct 548 ms 66220 KB Output is correct
83 Correct 574 ms 66476 KB Output is correct
84 Correct 551 ms 66268 KB Output is correct
85 Correct 555 ms 66212 KB Output is correct
86 Correct 550 ms 66200 KB Output is correct
87 Correct 557 ms 66176 KB Output is correct
88 Correct 556 ms 66172 KB Output is correct
89 Correct 553 ms 66232 KB Output is correct
90 Correct 564 ms 66308 KB Output is correct
91 Correct 548 ms 66236 KB Output is correct
92 Correct 548 ms 66288 KB Output is correct
93 Correct 553 ms 66180 KB Output is correct
94 Correct 543 ms 66204 KB Output is correct
95 Correct 567 ms 66108 KB Output is correct
96 Correct 556 ms 66204 KB Output is correct
97 Correct 552 ms 66484 KB Output is correct
98 Correct 542 ms 66200 KB Output is correct
99 Correct 543 ms 66224 KB Output is correct
100 Correct 500 ms 66328 KB Output is correct
101 Correct 472 ms 66220 KB Output is correct
102 Correct 489 ms 66200 KB Output is correct
103 Correct 482 ms 66232 KB Output is correct
104 Correct 473 ms 66204 KB Output is correct
105 Correct 491 ms 66224 KB Output is correct
106 Correct 493 ms 66224 KB Output is correct
107 Correct 488 ms 66216 KB Output is correct
108 Correct 489 ms 66244 KB Output is correct
109 Correct 492 ms 66200 KB Output is correct
110 Correct 548 ms 66176 KB Output is correct
111 Correct 557 ms 66084 KB Output is correct
112 Correct 561 ms 66140 KB Output is correct
113 Correct 546 ms 66176 KB Output is correct
114 Correct 558 ms 66220 KB Output is correct
115 Correct 560 ms 66236 KB Output is correct
116 Correct 572 ms 66180 KB Output is correct
117 Correct 556 ms 66200 KB Output is correct
118 Correct 556 ms 66200 KB Output is correct
119 Correct 548 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 556 ms 66176 KB Output is correct
123 Correct 555 ms 66220 KB Output is correct
124 Correct 561 ms 66208 KB Output is correct
125 Correct 568 ms 66200 KB Output is correct
126 Correct 550 ms 66176 KB Output is correct
127 Correct 552 ms 66100 KB Output is correct
128 Correct 549 ms 66172 KB Output is correct
129 Correct 551 ms 66172 KB Output is correct
130 Correct 543 ms 66120 KB Output is correct
131 Correct 554 ms 66204 KB Output is correct
132 Correct 556 ms 66144 KB Output is correct
133 Correct 545 ms 66132 KB Output is correct