oj.uz

Submission #465343

# Submission time Handle Problem Language Result Execution time Memory
465343 2021-08-15T15:59:33 Z Vladth11 Bulldozer (JOI17_bulldozer) C++14
100 / 100
 1248 ms 49968 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
5.0 / 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 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 0 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct

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 0 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 2 ms 588 KB Output is correct
22 Correct 2 ms 588 KB Output is correct
23 Correct 2 ms 588 KB Output is correct
24 Correct 2 ms 588 KB Output is correct
25 Correct 2 ms 588 KB Output is correct
26 Correct 3 ms 588 KB Output is correct
27 Correct 3 ms 588 KB Output is correct
28 Correct 2 ms 588 KB Output is correct
29 Correct 2 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 2 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 0 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 2 ms 588 KB Output is correct
22 Correct 2 ms 588 KB Output is correct
23 Correct 2 ms 588 KB Output is correct
24 Correct 2 ms 588 KB Output is correct
25 Correct 2 ms 588 KB Output is correct
26 Correct 3 ms 588 KB Output is correct
27 Correct 3 ms 588 KB Output is correct
28 Correct 2 ms 588 KB Output is correct
29 Correct 2 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 2 ms 588 KB Output is correct
33 Correct 1241 ms 49680 KB Output is correct
34 Correct 1212 ms 49684 KB Output is correct
35 Correct 1159 ms 49740 KB Output is correct
36 Correct 1142 ms 49680 KB Output is correct
37 Correct 1152 ms 49740 KB Output is correct
38 Correct 1156 ms 49684 KB Output is correct
39 Correct 1161 ms 49744 KB Output is correct
40 Correct 1168 ms 49760 KB Output is correct
41 Correct 1176 ms 49656 KB Output is correct
42 Correct 1163 ms 49776 KB Output is correct
43 Correct 1153 ms 49704 KB Output is correct
44 Correct 1145 ms 49656 KB Output is correct
45 Correct 1165 ms 49688 KB Output is correct
46 Correct 1164 ms 49776 KB Output is correct
47 Correct 1163 ms 49664 KB Output is correct
48 Correct 1147 ms 49720 KB Output is correct
49 Correct 1217 ms 49680 KB Output is correct
50 Correct 1175 ms 49640 KB Output is correct
51 Correct 1186 ms 49740 KB Output is correct
52 Correct 1132 ms 49680 KB Output is correct
53 Correct 1157 ms 49804 KB Output is correct
54 Correct 1192 ms 49672 KB Output is correct

Subtask #4
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 0 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 2 ms 588 KB Output is correct
22 Correct 2 ms 588 KB Output is correct
23 Correct 2 ms 588 KB Output is correct
24 Correct 2 ms 588 KB Output is correct
25 Correct 2 ms 588 KB Output is correct
26 Correct 3 ms 588 KB Output is correct
27 Correct 3 ms 588 KB Output is correct
28 Correct 2 ms 588 KB Output is correct
29 Correct 2 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 2 ms 588 KB Output is correct
33 Correct 1241 ms 49680 KB Output is correct
34 Correct 1212 ms 49684 KB Output is correct
35 Correct 1159 ms 49740 KB Output is correct
36 Correct 1142 ms 49680 KB Output is correct
37 Correct 1152 ms 49740 KB Output is correct
38 Correct 1156 ms 49684 KB Output is correct
39 Correct 1161 ms 49744 KB Output is correct
40 Correct 1168 ms 49760 KB Output is correct
41 Correct 1176 ms 49656 KB Output is correct
42 Correct 1163 ms 49776 KB Output is correct
43 Correct 1153 ms 49704 KB Output is correct
44 Correct 1145 ms 49656 KB Output is correct
45 Correct 1165 ms 49688 KB Output is correct
46 Correct 1164 ms 49776 KB Output is correct
47 Correct 1163 ms 49664 KB Output is correct
48 Correct 1147 ms 49720 KB Output is correct
49 Correct 1217 ms 49680 KB Output is correct
50 Correct 1175 ms 49640 KB Output is correct
51 Correct 1186 ms 49740 KB Output is correct
52 Correct 1132 ms 49680 KB Output is correct
53 Correct 1157 ms 49804 KB Output is correct
54 Correct 1192 ms 49672 KB Output is correct
55 Correct 1169 ms 49704 KB Output is correct
56 Correct 1180 ms 49680 KB Output is correct
57 Correct 1156 ms 49664 KB Output is correct
58 Correct 1156 ms 49680 KB Output is correct
59 Correct 1179 ms 49968 KB Output is correct
60 Correct 1195 ms 49832 KB Output is correct
61 Correct 1168 ms 49700 KB Output is correct
62 Correct 1163 ms 49728 KB Output is correct
63 Correct 1187 ms 49752 KB Output is correct
64 Correct 1183 ms 49680 KB Output is correct
65 Correct 1148 ms 49780 KB Output is correct
66 Correct 1162 ms 49656 KB Output is correct
67 Correct 1151 ms 49844 KB Output is correct
68 Correct 1157 ms 49696 KB Output is correct
69 Correct 1214 ms 49760 KB Output is correct
70 Correct 1154 ms 49696 KB Output is correct
71 Correct 1152 ms 49680 KB Output is correct
72 Correct 1190 ms 49680 KB Output is correct
73 Correct 1175 ms 49680 KB Output is correct
74 Correct 1148 ms 49744 KB Output is correct

Subtask #5
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 0 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 0 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 2 ms 588 KB Output is correct
17 Correct 2 ms 588 KB Output is correct
18 Correct 2 ms 588 KB Output is correct
19 Correct 2 ms 588 KB Output is correct
20 Correct 2 ms 588 KB Output is correct
21 Correct 2 ms 588 KB Output is correct
22 Correct 2 ms 588 KB Output is correct
23 Correct 2 ms 588 KB Output is correct
24 Correct 2 ms 588 KB Output is correct
25 Correct 2 ms 588 KB Output is correct
26 Correct 0 ms 204 KB Output is correct
27 Correct 1 ms 204 KB Output is correct
28 Correct 0 ms 204 KB Output is correct
29 Correct 0 ms 204 KB Output is correct
30 Correct 1 ms 204 KB Output is correct
31 Correct 0 ms 204 KB Output is correct
32 Correct 0 ms 204 KB Output is correct
33 Correct 0 ms 204 KB Output is correct
34 Correct 0 ms 204 KB Output is correct
35 Correct 1 ms 204 KB Output is correct
36 Correct 2 ms 588 KB Output is correct
37 Correct 2 ms 588 KB Output is correct
38 Correct 2 ms 588 KB Output is correct
39 Correct 2 ms 588 KB Output is correct
40 Correct 2 ms 588 KB Output is correct
41 Correct 3 ms 588 KB Output is correct
42 Correct 3 ms 588 KB Output is correct
43 Correct 2 ms 588 KB Output is correct
44 Correct 2 ms 588 KB Output is correct
45 Correct 2 ms 588 KB Output is correct
46 Correct 2 ms 588 KB Output is correct
47 Correct 2 ms 588 KB Output is correct
48 Correct 1241 ms 49680 KB Output is correct
49 Correct 1212 ms 49684 KB Output is correct
50 Correct 1159 ms 49740 KB Output is correct
51 Correct 1142 ms 49680 KB Output is correct
52 Correct 1152 ms 49740 KB Output is correct
53 Correct 1156 ms 49684 KB Output is correct
54 Correct 1161 ms 49744 KB Output is correct
55 Correct 1168 ms 49760 KB Output is correct
56 Correct 1176 ms 49656 KB Output is correct
57 Correct 1163 ms 49776 KB Output is correct
58 Correct 1153 ms 49704 KB Output is correct
59 Correct 1145 ms 49656 KB Output is correct
60 Correct 1165 ms 49688 KB Output is correct
61 Correct 1164 ms 49776 KB Output is correct
62 Correct 1163 ms 49664 KB Output is correct
63 Correct 1147 ms 49720 KB Output is correct
64 Correct 1217 ms 49680 KB Output is correct
65 Correct 1175 ms 49640 KB Output is correct
66 Correct 1186 ms 49740 KB Output is correct
67 Correct 1132 ms 49680 KB Output is correct
68 Correct 1157 ms 49804 KB Output is correct
69 Correct 1192 ms 49672 KB Output is correct
70 Correct 1169 ms 49704 KB Output is correct
71 Correct 1180 ms 49680 KB Output is correct
72 Correct 1156 ms 49664 KB Output is correct
73 Correct 1156 ms 49680 KB Output is correct
74 Correct 1179 ms 49968 KB Output is correct
75 Correct 1195 ms 49832 KB Output is correct
76 Correct 1168 ms 49700 KB Output is correct
77 Correct 1163 ms 49728 KB Output is correct
78 Correct 1187 ms 49752 KB Output is correct
79 Correct 1183 ms 49680 KB Output is correct
80 Correct 1148 ms 49780 KB Output is correct
81 Correct 1162 ms 49656 KB Output is correct
82 Correct 1151 ms 49844 KB Output is correct
83 Correct 1157 ms 49696 KB Output is correct
84 Correct 1214 ms 49760 KB Output is correct
85 Correct 1154 ms 49696 KB Output is correct
86 Correct 1152 ms 49680 KB Output is correct
87 Correct 1190 ms 49680 KB Output is correct
88 Correct 1175 ms 49680 KB Output is correct
89 Correct 1148 ms 49744 KB Output is correct
90 Correct 1138 ms 49708 KB Output is correct
91 Correct 1138 ms 49728 KB Output is correct
92 Correct 1135 ms 49692 KB Output is correct
93 Correct 1145 ms 49680 KB Output is correct
94 Correct 1153 ms 49680 KB Output is correct
95 Correct 1248 ms 49708 KB Output is correct
96 Correct 1148 ms 49656 KB Output is correct
97 Correct 1188 ms 49692 KB Output is correct
98 Correct 1190 ms 49836 KB Output is correct
99 Correct 1178 ms 49692 KB Output is correct
100 Correct 1117 ms 49688 KB Output is correct
101 Correct 1083 ms 49828 KB Output is correct
102 Correct 1141 ms 49688 KB Output is correct
103 Correct 1096 ms 49740 KB Output is correct
104 Correct 1091 ms 49692 KB Output is correct
105 Correct 1119 ms 49652 KB Output is correct
106 Correct 1024 ms 49748 KB Output is correct
107 Correct 1098 ms 49768 KB Output is correct
108 Correct 1077 ms 49684 KB Output is correct
109 Correct 1107 ms 49684 KB Output is correct
110 Correct 1072 ms 49716 KB Output is correct
111 Correct 1064 ms 49728 KB Output is correct
112 Correct 1052 ms 49768 KB Output is correct
113 Correct 1062 ms 49684 KB Output is correct
114 Correct 1089 ms 49840 KB Output is correct
115 Correct 1078 ms 49680 KB Output is correct
116 Correct 1094 ms 49752 KB Output is correct
117 Correct 1116 ms 49660 KB Output is correct
118 Correct 1095 ms 49672 KB Output is correct
119 Correct 1085 ms 49696 KB Output is correct
120 Correct 0 ms 204 KB Output is correct
121 Correct 0 ms 204 KB Output is correct
122 Correct 1167 ms 49764 KB Output is correct
123 Correct 1159 ms 49684 KB Output is correct
124 Correct 1165 ms 49732 KB Output is correct
125 Correct 1203 ms 49680 KB Output is correct
126 Correct 1161 ms 49892 KB Output is correct
127 Correct 1170 ms 49744 KB Output is correct
128 Correct 1153 ms 49684 KB Output is correct
129 Correct 1164 ms 49712 KB Output is correct
130 Correct 1149 ms 49680 KB Output is correct
131 Correct 1168 ms 49692 KB Output is correct
132 Correct 1125 ms 49712 KB Output is correct
133 Correct 1144 ms 49680 KB Output is correct