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Submission #1110090

# Submission time Handle Problem Language Result Execution time Memory
1110090 2024-11-08T17:23:20 Z vladilius Bulldozer (JOI17_bulldozer) C++17
55 / 100
 755 ms 35796 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
using pii = pair<int, int>;
#define pb push_back
#define ff first
#define ss second

struct ST{
    struct node{
        ll pr, sf, mx, s;
    };
    vector<node> t;
    int n;
    ST(int ns){
        n = ns;
        t.resize(4 * n);
    }
    void upd(int v, int tl, int tr, int& p, int& x){
        if (tl == tr){
            t[v].s = x;
            t[v].pr = t[v].sf = t[v].mx = max(0, x);
            return;
        }
        int tm = (tl + tr) / 2, vv = 2 * v;
        if (p <= tm){
            upd(vv, tl, tm, p, x);
        }
        else {
            upd(vv + 1, tm + 1, tr, p, x);
        }
        t[v].s = t[vv].s + t[vv + 1].s;
        t[v].mx = max({t[vv].mx, t[vv + 1].mx, t[vv].sf + t[vv + 1].pr});
        t[v].pr = max(t[vv].pr, t[vv].s + t[vv + 1].pr);
        t[v].sf = max(t[vv + 1].sf, t[vv + 1].s + t[vv].sf);
    }
    void upd(int p, int x){
        upd(1, 1, n, p, x);
    }
    ll get(){
        return t[1].mx;
    }
};

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    
    int n; cin>>n;
    vector<int> x(n + 1), y(n + 1), a(n + 1), f = {0};
    for (int i = 1; i <= n; i++){
        cin>>x[i]>>y[i]>>a[i];
        f.pb(i);
    }
    
    auto cmp = [&](int i, int j){
        return x[i] < x[j];
    };
    sort(f.begin() + 1, f.end(), cmp);
    vector<int> p(n + 1);
    for (int i = 1; i <= n; i++){
        p[f[i]] = i;
    }
    ST T(n);
    for (int i = 1; i <= n; i++){
        T.upd(p[i], a[i]);
    }
    ll out = T.get();
    
    vector<pair<pii, pii>> all;
    for (int i = 1; i <= n; i++){
        for (int j = i + 1; j <= n; j++){
            if (x[f[i]] != x[f[j]]){
                all.pb({{y[f[j]] - y[f[i]], x[f[j]] - x[f[i]]}, {f[i], f[j]}});
            }
        }
    }
    
    auto cmp1 = [&](pair<pii, pii> a, pair<pii, pii> b){
        auto [u1, v1] = a.ff;
        auto [u2, v2] = b.ff;
        return 1LL * u1 * v2 < 1LL * u2 * v1;
    };
    
    sort(all.begin(), all.end(), cmp1);
    vector<int> rem;
    vector<bool> used(n + 1);
    int i = 0;
    while (i < all.size()){
        int j = i;
        while (j < all.size() && (1LL * all[i].ff.ff * all[j].ff.ss) == (1LL * all[i].ff.ss * all[j].ff.ff)){
            auto [u, v] = all[j].ss;
            assert(!used[u] && !used[v]);
            used[u] = used[v] = 1;
            rem.pb(u); rem.pb(v);
            swap(p[u], p[v]);
            T.upd(p[u], a[u]);
            T.upd(p[v], a[v]);
            j++;
        }
        for (int j: rem) used[j] = 0;
        rem.clear();
        out = max(out, T.get());
        i = j;
    }
    
    cout<<out<<"\n";
}

Compilation message

bulldozer.cpp: In function 'int main()':
bulldozer.cpp:91:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<std::pair<int, int>, std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   91 |     while (i < all.size()){
      |            ~~^~~~~~~~~~~~
bulldozer.cpp:93:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<std::pair<int, int>, std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   93 |         while (j < all.size() && (1LL * all[i].ff.ff * all[j].ff.ss) == (1LL * all[i].ff.ss * all[j].ff.ff)){
      |                ~~^~~~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Runtime error 2 ms 848 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 592 KB Output is correct
2 Correct 2 ms 592 KB Output is correct
3 Correct 2 ms 592 KB Output is correct
4 Correct 3 ms 592 KB Output is correct
5 Correct 2 ms 592 KB Output is correct
6 Correct 2 ms 592 KB Output is correct
7 Correct 2 ms 592 KB Output is correct
8 Correct 2 ms 592 KB Output is correct
9 Correct 2 ms 592 KB Output is correct
10 Correct 2 ms 592 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 508 KB Output is correct
21 Correct 2 ms 592 KB Output is correct
22 Correct 2 ms 760 KB Output is correct
23 Correct 2 ms 592 KB Output is correct
24 Correct 2 ms 592 KB Output is correct
25 Correct 2 ms 592 KB Output is correct
26 Correct 2 ms 592 KB Output is correct
27 Correct 2 ms 764 KB Output is correct
28 Correct 2 ms 592 KB Output is correct
29 Correct 2 ms 592 KB Output is correct
30 Correct 2 ms 592 KB Output is correct
31 Correct 2 ms 592 KB Output is correct
32 Correct 2 ms 592 KB Output is correct

Subtask #3
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 592 KB Output is correct
2 Correct 2 ms 592 KB Output is correct
3 Correct 2 ms 592 KB Output is correct
4 Correct 3 ms 592 KB Output is correct
5 Correct 2 ms 592 KB Output is correct
6 Correct 2 ms 592 KB Output is correct
7 Correct 2 ms 592 KB Output is correct
8 Correct 2 ms 592 KB Output is correct
9 Correct 2 ms 592 KB Output is correct
10 Correct 2 ms 592 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 508 KB Output is correct
21 Correct 2 ms 592 KB Output is correct
22 Correct 2 ms 760 KB Output is correct
23 Correct 2 ms 592 KB Output is correct
24 Correct 2 ms 592 KB Output is correct
25 Correct 2 ms 592 KB Output is correct
26 Correct 2 ms 592 KB Output is correct
27 Correct 2 ms 764 KB Output is correct
28 Correct 2 ms 592 KB Output is correct
29 Correct 2 ms 592 KB Output is correct
30 Correct 2 ms 592 KB Output is correct
31 Correct 2 ms 592 KB Output is correct
32 Correct 2 ms 592 KB Output is correct
33 Correct 728 ms 35764 KB Output is correct
34 Correct 704 ms 35764 KB Output is correct
35 Correct 695 ms 35764 KB Output is correct
36 Correct 705 ms 35764 KB Output is correct
37 Correct 732 ms 35764 KB Output is correct
38 Correct 702 ms 35764 KB Output is correct
39 Correct 724 ms 35764 KB Output is correct
40 Correct 726 ms 35764 KB Output is correct
41 Correct 752 ms 35756 KB Output is correct
42 Correct 739 ms 35764 KB Output is correct
43 Correct 701 ms 35764 KB Output is correct
44 Correct 709 ms 35764 KB Output is correct
45 Correct 727 ms 35764 KB Output is correct
46 Correct 702 ms 35764 KB Output is correct
47 Correct 698 ms 35764 KB Output is correct
48 Correct 706 ms 35764 KB Output is correct
49 Correct 710 ms 35764 KB Output is correct
50 Correct 721 ms 35764 KB Output is correct
51 Correct 737 ms 35764 KB Output is correct
52 Correct 736 ms 35764 KB Output is correct
53 Correct 728 ms 35764 KB Output is correct
54 Correct 755 ms 35764 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 592 KB Output is correct
2 Correct 2 ms 592 KB Output is correct
3 Correct 2 ms 592 KB Output is correct
4 Correct 3 ms 592 KB Output is correct
5 Correct 2 ms 592 KB Output is correct
6 Correct 2 ms 592 KB Output is correct
7 Correct 2 ms 592 KB Output is correct
8 Correct 2 ms 592 KB Output is correct
9 Correct 2 ms 592 KB Output is correct
10 Correct 2 ms 592 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 508 KB Output is correct
21 Correct 2 ms 592 KB Output is correct
22 Correct 2 ms 760 KB Output is correct
23 Correct 2 ms 592 KB Output is correct
24 Correct 2 ms 592 KB Output is correct
25 Correct 2 ms 592 KB Output is correct
26 Correct 2 ms 592 KB Output is correct
27 Correct 2 ms 764 KB Output is correct
28 Correct 2 ms 592 KB Output is correct
29 Correct 2 ms 592 KB Output is correct
30 Correct 2 ms 592 KB Output is correct
31 Correct 2 ms 592 KB Output is correct
32 Correct 2 ms 592 KB Output is correct
33 Correct 728 ms 35764 KB Output is correct
34 Correct 704 ms 35764 KB Output is correct
35 Correct 695 ms 35764 KB Output is correct
36 Correct 705 ms 35764 KB Output is correct
37 Correct 732 ms 35764 KB Output is correct
38 Correct 702 ms 35764 KB Output is correct
39 Correct 724 ms 35764 KB Output is correct
40 Correct 726 ms 35764 KB Output is correct
41 Correct 752 ms 35756 KB Output is correct
42 Correct 739 ms 35764 KB Output is correct
43 Correct 701 ms 35764 KB Output is correct
44 Correct 709 ms 35764 KB Output is correct
45 Correct 727 ms 35764 KB Output is correct
46 Correct 702 ms 35764 KB Output is correct
47 Correct 698 ms 35764 KB Output is correct
48 Correct 706 ms 35764 KB Output is correct
49 Correct 710 ms 35764 KB Output is correct
50 Correct 721 ms 35764 KB Output is correct
51 Correct 737 ms 35764 KB Output is correct
52 Correct 736 ms 35764 KB Output is correct
53 Correct 728 ms 35764 KB Output is correct
54 Correct 755 ms 35764 KB Output is correct
55 Correct 735 ms 35796 KB Output is correct
56 Correct 715 ms 35764 KB Output is correct
57 Correct 749 ms 35764 KB Output is correct
58 Correct 725 ms 35764 KB Output is correct
59 Correct 694 ms 35764 KB Output is correct
60 Correct 694 ms 35764 KB Output is correct
61 Correct 700 ms 35764 KB Output is correct
62 Correct 736 ms 35792 KB Output is correct
63 Correct 711 ms 35764 KB Output is correct
64 Correct 730 ms 35764 KB Output is correct
65 Incorrect 752 ms 35764 KB Output isn't correct
66 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Runtime error 2 ms 848 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -