oj.uz

Submission #937077

# Submission time Handle Problem Language Result Execution time Memory
937077 2024-03-03T11:26:55 Z MilosMilutinovic Bulldozer (JOI17_bulldozer) C++14
60 / 100
 893 ms 68744 KB 
#include <bits/stdc++.h>
 
using namespace std;
 
#define int long long
 
struct point {
    int x;
    int y;
    int w;
    bool operator < (point p) {
        if(x == p.x) return y > p.y;
        return x < p.x;
    }
};
 
struct frac {
    int p;
    int q;
    frac() { }
    frac(int _p, int _q) { p = _p; q = _q; }
};
 
struct node {
    long long mx;
    long long pref;
    long long suff;
    long long sum;
};
 
bool operator < (frac a, frac b) { return a.p * 1LL * b.q < b.p * 1LL * a.q; }
bool operator == (frac a, frac b) { return a.p * 1LL * b.q == a.q * 1LL * b.p; }
bool operator != (frac a, frac b) { return !(a == b); }
 
const int N = 2010;
int n;
point a[N];
vector<pair<frac, pair<int, int>>> slopes;
int order[N], pos[N];
node st[4 * N];
 
void update(int index, int l, int r, int x, int val) {
    if(l > r || r < x || x < l) return;
    if(l == r) {
        st[index].mx = st[index].pref = st[index].suff = max(val, 0LL);
        st[index].sum = val;
        return;
    }
    int mid = (l + r) / 2;
    if(x <= mid) update(2 * index, l, mid, x, val);
    else update(2 * index + 1, mid + 1, r, x, val);
    st[index].mx = max({st[2 * index].mx, st[2 * index + 1].mx, st[2 * index].suff + st[2 * index + 1].pref});
    st[index].pref = max(st[2 * index].pref, st[2 * index].sum + st[2 * index + 1].pref);
    st[index].suff = max(st[2 * index + 1].suff, st[2 * index + 1].sum + st[2 * index].suff);
    st[index].sum = st[2 * index].sum + st[2 * index + 1].sum;
}
 
signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cin >> n;
    for(int i = 1; i <= n; i++) cin >> a[i].x >> a[i].y >> a[i].w;
    for(int i = 1; i <= n; i++) {
        for(int j = i + 1; j <= n; j++) {
            int sign = 1;
            int dx = a[i].x - a[j].x, dy = a[i].y - a[j].y;
            if(dx < 0) sign *= -1;
            if(dy < 0) sign *= -1;
            dx = abs(dx);
            dy = abs(dy);
            int g = __gcd(dx, dy);
            dx /= g;
            dy /= g;
            if(dx != 0) dy *= sign;
            if(a[i] < a[j]) slopes.push_back({frac(dy, dx), {i, j}});
            else slopes.push_back({frac(dy, dx), {j, i}});
        }
    }
    sort(slopes.begin(), slopes.end(), [&](pair<frac, pair<int, int>> x, pair<frac, pair<int, int>> y) {
        if(x.first == y.first) {
            pair<int, int> i = x.second, j = y.second;
            if(i.first == j.first) return a[i.second] < a[j.second];
            return a[i.first] < a[j.first];
        }
        return x.first < y.first;
    });
    for(int i = 1; i <= n; i++) order[i] = i;
    sort(order + 1, order + n + 1, [&](int i, int j) {
        return a[i] < a[j];
    });
    for(int i = 1; i <= n; i++) pos[order[i]] = i;
    for(int i = 1; i <= n; i++) update(1, 1, n, i, a[order[i]].w);
    long long ans = st[1].mx;
    pair<frac, pair<int, int>> lst;
    lst.first = frac(-1, LLONG_MIN);
    for(pair<frac, pair<int, int>> slope : slopes) {
        if(slope.first != lst.first) ans = max(ans, st[1].mx);
        {
            int i = slope.second.first, j = slope.second.second;
            if(pos[i] < pos[j] || true) {
                update(1, 1, n, pos[i], a[order[pos[j]]].w);
                update(1, 1, n, pos[j], a[order[pos[i]]].w);
                swap(order[pos[i]], order[pos[j]]);
                swap(pos[i], pos[j]);
            }
        }
        lst = slope;
    }
    ans = max(ans, st[1].mx);
    cout << ans;
    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 860 KB Output is correct
2 Correct 2 ms 860 KB Output is correct
3 Correct 1 ms 860 KB Output is correct
4 Correct 1 ms 860 KB Output is correct
5 Correct 1 ms 860 KB Output is correct
6 Correct 1 ms 860 KB Output is correct
7 Correct 2 ms 860 KB Output is correct
8 Correct 1 ms 860 KB Output is correct
9 Correct 2 ms 860 KB Output is correct
10 Correct 1 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 600 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 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 868 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 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 0 ms 476 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 860 KB Output is correct
30 Correct 2 ms 860 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

# Verdict Execution time Memory 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 868 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 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 0 ms 476 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 860 KB Output is correct
30 Correct 2 ms 860 KB Output is correct
31 Correct 2 ms 860 KB Output is correct
32 Correct 2 ms 860 KB Output is correct
33 Correct 893 ms 66728 KB Output is correct
34 Correct 864 ms 68744 KB Output is correct
35 Correct 863 ms 66732 KB Output is correct
36 Correct 872 ms 67904 KB Output is correct
37 Correct 867 ms 66604 KB Output is correct
38 Correct 865 ms 68536 KB Output is correct
39 Correct 872 ms 66364 KB Output is correct
40 Correct 863 ms 66704 KB Output is correct
41 Correct 862 ms 66472 KB Output is correct
42 Correct 874 ms 66432 KB Output is correct
43 Correct 826 ms 67496 KB Output is correct
44 Correct 822 ms 68464 KB Output is correct
45 Correct 827 ms 68268 KB Output is correct
46 Correct 836 ms 67492 KB Output is correct
47 Correct 838 ms 67496 KB Output is correct
48 Correct 844 ms 67152 KB Output is correct
49 Correct 845 ms 67316 KB Output is correct
50 Correct 840 ms 67752 KB Output is correct
51 Correct 835 ms 67752 KB Output is correct
52 Correct 829 ms 67260 KB Output is correct
53 Correct 834 ms 67492 KB Output is correct
54 Correct 837 ms 68240 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory 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 868 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 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 0 ms 476 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 860 KB Output is correct
30 Correct 2 ms 860 KB Output is correct
31 Correct 2 ms 860 KB Output is correct
32 Correct 2 ms 860 KB Output is correct
33 Correct 893 ms 66728 KB Output is correct
34 Correct 864 ms 68744 KB Output is correct
35 Correct 863 ms 66732 KB Output is correct
36 Correct 872 ms 67904 KB Output is correct
37 Correct 867 ms 66604 KB Output is correct
38 Correct 865 ms 68536 KB Output is correct
39 Correct 872 ms 66364 KB Output is correct
40 Correct 863 ms 66704 KB Output is correct
41 Correct 862 ms 66472 KB Output is correct
42 Correct 874 ms 66432 KB Output is correct
43 Correct 826 ms 67496 KB Output is correct
44 Correct 822 ms 68464 KB Output is correct
45 Correct 827 ms 68268 KB Output is correct
46 Correct 836 ms 67492 KB Output is correct
47 Correct 838 ms 67496 KB Output is correct
48 Correct 844 ms 67152 KB Output is correct
49 Correct 845 ms 67316 KB Output is correct
50 Correct 840 ms 67752 KB Output is correct
51 Correct 835 ms 67752 KB Output is correct
52 Correct 829 ms 67260 KB Output is correct
53 Correct 834 ms 67492 KB Output is correct
54 Correct 837 ms 68240 KB Output is correct
55 Correct 865 ms 68044 KB Output is correct
56 Correct 868 ms 66492 KB Output is correct
57 Correct 871 ms 67572 KB Output is correct
58 Correct 866 ms 66712 KB Output is correct
59 Correct 864 ms 68200 KB Output is correct
60 Correct 870 ms 67640 KB Output is correct
61 Correct 866 ms 66984 KB Output is correct
62 Correct 883 ms 67392 KB Output is correct
63 Correct 876 ms 67748 KB Output is correct
64 Correct 875 ms 67240 KB Output is correct
65 Incorrect 857 ms 67240 KB Output isn't correct
66 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 860 KB Output is correct
2 Correct 2 ms 860 KB Output is correct
3 Correct 1 ms 860 KB Output is correct
4 Correct 1 ms 860 KB Output is correct
5 Correct 1 ms 860 KB Output is correct
6 Correct 1 ms 860 KB Output is correct
7 Correct 2 ms 860 KB Output is correct
8 Correct 1 ms 860 KB Output is correct
9 Correct 2 ms 860 KB Output is correct
10 Correct 1 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 600 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 2 ms 860 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 868 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 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 1 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 0 ms 476 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 860 KB Output is correct
45 Correct 2 ms 860 KB Output is correct
46 Correct 2 ms 860 KB Output is correct
47 Correct 2 ms 860 KB Output is correct
48 Correct 893 ms 66728 KB Output is correct
49 Correct 864 ms 68744 KB Output is correct
50 Correct 863 ms 66732 KB Output is correct
51 Correct 872 ms 67904 KB Output is correct
52 Correct 867 ms 66604 KB Output is correct
53 Correct 865 ms 68536 KB Output is correct
54 Correct 872 ms 66364 KB Output is correct
55 Correct 863 ms 66704 KB Output is correct
56 Correct 862 ms 66472 KB Output is correct
57 Correct 874 ms 66432 KB Output is correct
58 Correct 826 ms 67496 KB Output is correct
59 Correct 822 ms 68464 KB Output is correct
60 Correct 827 ms 68268 KB Output is correct
61 Correct 836 ms 67492 KB Output is correct
62 Correct 838 ms 67496 KB Output is correct
63 Correct 844 ms 67152 KB Output is correct
64 Correct 845 ms 67316 KB Output is correct
65 Correct 840 ms 67752 KB Output is correct
66 Correct 835 ms 67752 KB Output is correct
67 Correct 829 ms 67260 KB Output is correct
68 Correct 834 ms 67492 KB Output is correct
69 Correct 837 ms 68240 KB Output is correct
70 Correct 865 ms 68044 KB Output is correct
71 Correct 868 ms 66492 KB Output is correct
72 Correct 871 ms 67572 KB Output is correct
73 Correct 866 ms 66712 KB Output is correct
74 Correct 864 ms 68200 KB Output is correct
75 Correct 870 ms 67640 KB Output is correct
76 Correct 866 ms 66984 KB Output is correct
77 Correct 883 ms 67392 KB Output is correct
78 Correct 876 ms 67748 KB Output is correct
79 Correct 875 ms 67240 KB Output is correct
80 Incorrect 857 ms 67240 KB Output isn't correct
81 Halted 0 ms 0 KB -