oj.uz

Submission #465312

# Submission time Handle Problem Language Result Execution time Memory
465312 2021-08-15T14:50:07 Z Vladth11 Bulldozer (JOI17_bulldozer) C++14
55 / 100
 1220 ms 49856 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define debug(x) cerr << #x << " " << x << "\n"
#define debugs(x) cerr << #x << " " << x << " "
#pragma GCC optimize("Ofast,unroll-loops")
 
using namespace std;
using namespace __gnu_pbds;
typedef long long ll;
typedef pair <ll, ll> pii;
typedef pair <long double, pii> muchie;
typedef tree <ll, null_type, less_equal <ll>, rb_tree_tag, tree_order_statistics_node_update> OST;
 
const ll NMAX = 2001;
const ll INF = (1LL << 60);
const ll HALF = (1LL << 59);
const ll MOD = 1000000007;
const ll BLOCK = 318;
const ll base = 31;
 
ll n;
 
class All{
public:
    struct Node{
        ll st, dr, total;
        ll ssm;
    };
    Node all[NMAX * 4];
    Node combine(Node a, Node b){
        Node rez;
        rez.st = max({a.st, a.total + b.st, 0LL});
        rez.dr = max({b.dr, b.total + a.dr, 0LL});
        rez.total = a.total + b.total;
        rez.ssm = max({a.ssm, b.ssm, a.dr + b.st, 0LL}); ///hmmm
        return rez;
    }
    void update(ll node, ll st, ll dr, ll a, ll b){
        if(st == dr){
          	//b = max(b, 0);
            all[node] = {max(b, 0LL), max(0LL, b), b, max(0LL, b)};
            return;
        }
        ll mid = (st + dr) / 2;
        if(a <= mid){
            update(node * 2, st, mid, a, b);
        }else{
            update(node * 2 + 1, mid + 1, dr, a, b);
        }
        all[node] = combine(all[node * 2], all[node * 2 + 1]);
    }
    Node best(){
        return all[1];
    }
}st;
 
struct poll{
    ll x, y, val, idx;
};
 
poll v[NMAX], a[NMAX];
map <pii, ll> mp;
 
struct event{
    pii p;
    double timp;
};
 
vector <event> events;
 
bool cmp(event a, event b){
    if(a.timp != b.timp)
        return a.timp < b.timp;
    if(a.p.first != b.p.first)
    return a.p.first < b.p.first;
    return a.p.second > b.p.second;
}
 
///De analizat
void swapElements(ll a, ll b){
    st.update(1, 1, n, v[a].idx, v[b].val);
    st.update(1, 1, n, v[b].idx, v[a].val);
    swap(v[a].idx, v[b].idx);
 
}
///De analizat
 
bool cmpp(poll a, poll b){
    if(a.x != b.x)
        return a.x < b.x;
    return a.y < b.y;
}
 
void compute(ll i, ll j){
    events.push_back({{i, j}, (double)(v[i].y - v[j].y) / (double)(v[i].x - v[j].x)});
}
 
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    ll i;
    cin >> n;
    for(i = 1; i <= n; i++){
        cin >> v[i].x >> v[i].y >> v[i].val;
    }
    sort(v + 1, v + n + 1, cmpp);
    for(i = 1; i <= n; i++){
        for(ll j = i + 1; j <= n; j++){
            compute(i, j);
        }
    }
    for(i = 1; i <= n; i++){
        st.update(1, 1, n, i, v[i].val);
        v[i].idx = i;
    }
    sort(events.begin(), events.end(), cmp);
    ll maxim = st.best().ssm;
    for(i = 0; i < events.size(); i++){
        swapElements(events[i].p.first, events[i].p.second);
        if(i < events.size() - 1 && events[i].timp == events[i + 1].timp){
            continue;
        }
        maxim = max(maxim, st.best().ssm);
    }
    cout << maxim;
    return 0;
}

Compilation message

bulldozer.cpp: In function 'int main()':
bulldozer.cpp:120:18: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<event>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  120 |     for(i = 0; i < events.size(); i++){
      |                ~~^~~~~~~~~~~~~~~
bulldozer.cpp:122:14: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<event>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  122 |         if(i < events.size() - 1 && events[i].timp == events[i + 1].timp){
      |            ~~^~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 588 KB Output is correct
2 Correct 2 ms 588 KB Output is correct
3 Correct 2 ms 588 KB Output is correct
4 Correct 2 ms 588 KB Output is correct
5 Correct 2 ms 588 KB Output is correct
6 Incorrect 2 ms 588 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 588 KB Output is correct
2 Correct 2 ms 588 KB Output is correct
3 Correct 2 ms 588 KB Output is correct
4 Correct 2 ms 588 KB Output is correct
5 Correct 2 ms 588 KB Output is correct
6 Correct 2 ms 588 KB Output is correct
7 Correct 2 ms 588 KB Output is correct
8 Correct 2 ms 588 KB Output is correct
9 Correct 2 ms 588 KB Output is correct
10 Correct 2 ms 588 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 2 ms 588 KB Output is correct
22 Correct 3 ms 588 KB Output is correct
23 Correct 2 ms 588 KB Output is correct
24 Correct 3 ms 588 KB Output is correct
25 Correct 2 ms 588 KB Output is correct
26 Correct 2 ms 588 KB Output is correct
27 Correct 2 ms 588 KB Output is correct
28 Correct 2 ms 588 KB Output is correct
29 Correct 3 ms 588 KB Output is correct
30 Correct 2 ms 588 KB Output is correct
31 Correct 2 ms 588 KB Output is correct
32 Correct 3 ms 588 KB Output is correct

Subtask #3
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 588 KB Output is correct
2 Correct 2 ms 588 KB Output is correct
3 Correct 2 ms 588 KB Output is correct
4 Correct 2 ms 588 KB Output is correct
5 Correct 2 ms 588 KB Output is correct
6 Correct 2 ms 588 KB Output is correct
7 Correct 2 ms 588 KB Output is correct
8 Correct 2 ms 588 KB Output is correct
9 Correct 2 ms 588 KB Output is correct
10 Correct 2 ms 588 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 2 ms 588 KB Output is correct
22 Correct 3 ms 588 KB Output is correct
23 Correct 2 ms 588 KB Output is correct
24 Correct 3 ms 588 KB Output is correct
25 Correct 2 ms 588 KB Output is correct
26 Correct 2 ms 588 KB Output is correct
27 Correct 2 ms 588 KB Output is correct
28 Correct 2 ms 588 KB Output is correct
29 Correct 3 ms 588 KB Output is correct
30 Correct 2 ms 588 KB Output is correct
31 Correct 2 ms 588 KB Output is correct
32 Correct 3 ms 588 KB Output is correct
33 Correct 1165 ms 49700 KB Output is correct
34 Correct 1165 ms 49752 KB Output is correct
35 Correct 1197 ms 49752 KB Output is correct
36 Correct 1157 ms 49672 KB Output is correct
37 Correct 1199 ms 49696 KB Output is correct
38 Correct 1154 ms 49684 KB Output is correct
39 Correct 1199 ms 49692 KB Output is correct
40 Correct 1185 ms 49788 KB Output is correct
41 Correct 1141 ms 49748 KB Output is correct
42 Correct 1148 ms 49664 KB Output is correct
43 Correct 1158 ms 49660 KB Output is correct
44 Correct 1155 ms 49664 KB Output is correct
45 Correct 1140 ms 49768 KB Output is correct
46 Correct 1220 ms 49696 KB Output is correct
47 Correct 1196 ms 49712 KB Output is correct
48 Correct 1155 ms 49676 KB Output is correct
49 Correct 1154 ms 49732 KB Output is correct
50 Correct 1140 ms 49816 KB Output is correct
51 Correct 1138 ms 49680 KB Output is correct
52 Correct 1137 ms 49692 KB Output is correct
53 Correct 1138 ms 49720 KB Output is correct
54 Correct 1152 ms 49656 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 588 KB Output is correct
2 Correct 2 ms 588 KB Output is correct
3 Correct 2 ms 588 KB Output is correct
4 Correct 2 ms 588 KB Output is correct
5 Correct 2 ms 588 KB Output is correct
6 Correct 2 ms 588 KB Output is correct
7 Correct 2 ms 588 KB Output is correct
8 Correct 2 ms 588 KB Output is correct
9 Correct 2 ms 588 KB Output is correct
10 Correct 2 ms 588 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 2 ms 588 KB Output is correct
22 Correct 3 ms 588 KB Output is correct
23 Correct 2 ms 588 KB Output is correct
24 Correct 3 ms 588 KB Output is correct
25 Correct 2 ms 588 KB Output is correct
26 Correct 2 ms 588 KB Output is correct
27 Correct 2 ms 588 KB Output is correct
28 Correct 2 ms 588 KB Output is correct
29 Correct 3 ms 588 KB Output is correct
30 Correct 2 ms 588 KB Output is correct
31 Correct 2 ms 588 KB Output is correct
32 Correct 3 ms 588 KB Output is correct
33 Correct 1165 ms 49700 KB Output is correct
34 Correct 1165 ms 49752 KB Output is correct
35 Correct 1197 ms 49752 KB Output is correct
36 Correct 1157 ms 49672 KB Output is correct
37 Correct 1199 ms 49696 KB Output is correct
38 Correct 1154 ms 49684 KB Output is correct
39 Correct 1199 ms 49692 KB Output is correct
40 Correct 1185 ms 49788 KB Output is correct
41 Correct 1141 ms 49748 KB Output is correct
42 Correct 1148 ms 49664 KB Output is correct
43 Correct 1158 ms 49660 KB Output is correct
44 Correct 1155 ms 49664 KB Output is correct
45 Correct 1140 ms 49768 KB Output is correct
46 Correct 1220 ms 49696 KB Output is correct
47 Correct 1196 ms 49712 KB Output is correct
48 Correct 1155 ms 49676 KB Output is correct
49 Correct 1154 ms 49732 KB Output is correct
50 Correct 1140 ms 49816 KB Output is correct
51 Correct 1138 ms 49680 KB Output is correct
52 Correct 1137 ms 49692 KB Output is correct
53 Correct 1138 ms 49720 KB Output is correct
54 Correct 1152 ms 49656 KB Output is correct
55 Correct 1143 ms 49716 KB Output is correct
56 Correct 1150 ms 49856 KB Output is correct
57 Correct 1149 ms 49680 KB Output is correct
58 Correct 1144 ms 49680 KB Output is correct
59 Correct 1153 ms 49660 KB Output is correct
60 Correct 1155 ms 49680 KB Output is correct
61 Correct 1156 ms 49676 KB Output is correct
62 Correct 1161 ms 49656 KB Output is correct
63 Correct 1140 ms 49656 KB Output is correct
64 Correct 1145 ms 49692 KB Output is correct
65 Incorrect 1157 ms 49656 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 588 KB Output is correct
2 Correct 2 ms 588 KB Output is correct
3 Correct 2 ms 588 KB Output is correct
4 Correct 2 ms 588 KB Output is correct
5 Correct 2 ms 588 KB Output is correct
6 Incorrect 2 ms 588 KB Output isn't correct
7 Halted 0 ms 0 KB -