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답안 #514378

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
514378 2022-01-18T07:23:21 Z amunduzbaev Bulldozer (JOI17_bulldozer) C++14
80 / 100
 954 ms 66404 KB 
#include "bits/stdc++.h"
using namespace std;

#define ar array
#define int long long

const int N = 2005;
long double const eps = 1e-14;

struct ST{
	ar<int, 4> tree[N * 4];
	void merge(ar<int, 4>& x, ar<int, 4>& a, ar<int, 4>& b){
		x[0] = max({a[0], b[0], a[2] + b[1]});
		x[1] = max({a[1], a[3] + b[1]});
		x[2] = max({b[2], b[3] + a[2]});
		x[3] = a[3] + b[3];
	}
	
	void sett(int i, int v, int lx = 0, int rx = N, int x = 1){
		if(lx == rx){ 
			tree[x] = {max(v, 0ll), max(v, 0ll), max(v, 0ll), v}; return;
		} int m = (lx + rx) >> 1;
		if(i <= m) sett(i, v, lx, m, x<<1);
		else sett(i, v, m+1, rx, x<<1|1);
		merge(tree[x], tree[x<<1], tree[x<<1|1]);
	}
	
	int get(int i, int lx = 0, int rx = N, int x = 1){
		if(lx == rx) return tree[x][3];
		int m = (lx + rx) >> 1;
		if(i <= m) return get(i, lx, m, x<<1);
		else return get(i, m+1, rx, x<<1|1);
	}
}tree;

/*

6
0 1 10
0 5 10
3 0 10
3 3 -5
4 5 10
4 1 10

*/

signed main(){
	ios::sync_with_stdio(0); cin.tie(0);
	
	int n; cin>>n;
	vector<ar<int, 3>> a(n);
	for(int i=0;i<n;i++){
		cin>>a[i][0]>>a[i][1]>>a[i][2];
	} sort(a.begin(), a.end(), [&](auto& a, auto& b){
		if(a[0] != b[0]) return a[0] < b[0];
		return a[1] > b[1];
	});
	//~ cout<<"\n";
	vector<pair<long double, pair<int, int>>> tt;
	for(int i=0;i<n;i++){
		for(int j=i+1;j<n;j++){
			if(a[i][0] == a[j][0]) continue;
			double slop = (a[j][1] - a[i][1]) * 1. / (a[i][0] - a[j][0]);
			//~ cout<<i<<" "<<j<<" "<<slop<<"\n";
			tt.push_back({slop, {i, j}});
		}
	}
	
	vector<long double> b(n);
	vector<int> p(n); iota(p.begin(), p.end(), 0);
	
	vector<int> pos(n);
	for(int i=0;i<n;i++) pos[p[i]] = i, tree.sett(i, a[p[i]][2]);
	//~ for(int i=0;i<n;i++){
		//~ cout<<p[i]<<" ";
	//~ } cout<<"\n";
	
	int res = tree.tree[1][0];
	//~ sort(tt.begin(), tt.end(), [&](auto& a, auto& b){
		//~ if(a.first != b.first) return a.first < b.first;
		//~ if(a.second.second != b.second.second) return a.second.second > b.second.second;
		//~ return a.second.first > b.second.first;
	//~ });
	sort(tt.begin(), tt.end());
	
	vector<int> used(n);
	
	for(int l=0;l<(int)tt.size();){
		int k = l;
		//~ cout<<tt[l].first<<"\n";
		while(k < (int)tt.size() && abs(tt[l].first - tt[k].first) < eps){
			auto [i, j] = tt[k].second; k++;
			//~ if(used[j]) continue;
			//~ used[j] = 1;
			//~ cout<<i<<" "<<j<<" "<<pos[i]<<" "<<pos[j]<<"\n";
			swap(p[pos[i]], p[pos[j]]);
			swap(pos[i], pos[j]);
			tree.sett(pos[i], a[i][2]), tree.sett(pos[j], a[j][2]);
			//~ k++;
		} //while(l < k) used[tt[l].second.second] = 0, l++;
		l = k;
		//~ for(int i=0;i<n;i++){
			//~ cout<<p[i]<<" ";
		//~ } cout<<"\n";
		
		res = max(res, tree.tree[1][0]);
	}
	
	cout<<res<<"\n";
}

Compilation message

bulldozer.cpp: In function 'int main()':
bulldozer.cpp:93:9: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   93 |    auto [i, j] = tt[k].second; k++;
      |         ^

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 716 KB Output is correct
2 Correct 2 ms 716 KB Output is correct
3 Correct 2 ms 716 KB Output is correct
4 Correct 2 ms 716 KB Output is correct
5 Correct 2 ms 716 KB Output is correct
6 Correct 2 ms 716 KB Output is correct
7 Correct 3 ms 768 KB Output is correct
8 Correct 3 ms 716 KB Output is correct
9 Correct 2 ms 716 KB Output is correct
10 Correct 3 ms 716 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 0 ms 332 KB Output is correct
15 Correct 0 ms 332 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 716 KB Output is correct
2 Correct 2 ms 704 KB Output is correct
3 Correct 2 ms 716 KB Output is correct
4 Correct 2 ms 716 KB Output is correct
5 Correct 2 ms 716 KB Output is correct
6 Correct 2 ms 716 KB Output is correct
7 Correct 2 ms 716 KB Output is correct
8 Correct 2 ms 716 KB Output is correct
9 Correct 3 ms 716 KB Output is correct
10 Correct 2 ms 708 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 0 ms 332 KB Output is correct
15 Correct 1 ms 308 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 0 ms 332 KB Output is correct
18 Correct 0 ms 312 KB Output is correct
19 Correct 0 ms 332 KB Output is correct
20 Correct 0 ms 312 KB Output is correct
21 Correct 2 ms 716 KB Output is correct
22 Correct 2 ms 716 KB Output is correct
23 Correct 2 ms 704 KB Output is correct
24 Correct 2 ms 716 KB Output is correct
25 Correct 2 ms 704 KB Output is correct
26 Correct 2 ms 716 KB Output is correct
27 Correct 2 ms 700 KB Output is correct
28 Correct 2 ms 716 KB Output is correct
29 Correct 2 ms 704 KB Output is correct
30 Correct 2 ms 716 KB Output is correct
31 Correct 2 ms 716 KB Output is correct
32 Correct 3 ms 696 KB Output is correct

Subtask #3
35.0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 716 KB Output is correct
2 Correct 2 ms 704 KB Output is correct
3 Correct 2 ms 716 KB Output is correct
4 Correct 2 ms 716 KB Output is correct
5 Correct 2 ms 716 KB Output is correct
6 Correct 2 ms 716 KB Output is correct
7 Correct 2 ms 716 KB Output is correct
8 Correct 2 ms 716 KB Output is correct
9 Correct 3 ms 716 KB Output is correct
10 Correct 2 ms 708 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 0 ms 332 KB Output is correct
15 Correct 1 ms 308 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 0 ms 332 KB Output is correct
18 Correct 0 ms 312 KB Output is correct
19 Correct 0 ms 332 KB Output is correct
20 Correct 0 ms 312 KB Output is correct
21 Correct 2 ms 716 KB Output is correct
22 Correct 2 ms 716 KB Output is correct
23 Correct 2 ms 704 KB Output is correct
24 Correct 2 ms 716 KB Output is correct
25 Correct 2 ms 704 KB Output is correct
26 Correct 2 ms 716 KB Output is correct
27 Correct 2 ms 700 KB Output is correct
28 Correct 2 ms 716 KB Output is correct
29 Correct 2 ms 704 KB Output is correct
30 Correct 2 ms 716 KB Output is correct
31 Correct 2 ms 716 KB Output is correct
32 Correct 3 ms 696 KB Output is correct
33 Correct 890 ms 66288 KB Output is correct
34 Correct 903 ms 66208 KB Output is correct
35 Correct 895 ms 66200 KB Output is correct
36 Correct 882 ms 66308 KB Output is correct
37 Correct 910 ms 66192 KB Output is correct
38 Correct 922 ms 66180 KB Output is correct
39 Correct 888 ms 66360 KB Output is correct
40 Correct 954 ms 66112 KB Output is correct
41 Correct 907 ms 66168 KB Output is correct
42 Correct 891 ms 66132 KB Output is correct
43 Correct 898 ms 66212 KB Output is correct
44 Correct 895 ms 66192 KB Output is correct
45 Correct 891 ms 66144 KB Output is correct
46 Correct 907 ms 66112 KB Output is correct
47 Correct 907 ms 66200 KB Output is correct
48 Correct 923 ms 66208 KB Output is correct
49 Correct 905 ms 66120 KB Output is correct
50 Correct 897 ms 66148 KB Output is correct
51 Correct 885 ms 66180 KB Output is correct
52 Correct 909 ms 66136 KB Output is correct
53 Correct 899 ms 66180 KB Output is correct
54 Correct 886 ms 66148 KB Output is correct

Subtask #4
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 716 KB Output is correct
2 Correct 2 ms 704 KB Output is correct
3 Correct 2 ms 716 KB Output is correct
4 Correct 2 ms 716 KB Output is correct
5 Correct 2 ms 716 KB Output is correct
6 Correct 2 ms 716 KB Output is correct
7 Correct 2 ms 716 KB Output is correct
8 Correct 2 ms 716 KB Output is correct
9 Correct 3 ms 716 KB Output is correct
10 Correct 2 ms 708 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 0 ms 332 KB Output is correct
15 Correct 1 ms 308 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 0 ms 332 KB Output is correct
18 Correct 0 ms 312 KB Output is correct
19 Correct 0 ms 332 KB Output is correct
20 Correct 0 ms 312 KB Output is correct
21 Correct 2 ms 716 KB Output is correct
22 Correct 2 ms 716 KB Output is correct
23 Correct 2 ms 704 KB Output is correct
24 Correct 2 ms 716 KB Output is correct
25 Correct 2 ms 704 KB Output is correct
26 Correct 2 ms 716 KB Output is correct
27 Correct 2 ms 700 KB Output is correct
28 Correct 2 ms 716 KB Output is correct
29 Correct 2 ms 704 KB Output is correct
30 Correct 2 ms 716 KB Output is correct
31 Correct 2 ms 716 KB Output is correct
32 Correct 3 ms 696 KB Output is correct
33 Correct 890 ms 66288 KB Output is correct
34 Correct 903 ms 66208 KB Output is correct
35 Correct 895 ms 66200 KB Output is correct
36 Correct 882 ms 66308 KB Output is correct
37 Correct 910 ms 66192 KB Output is correct
38 Correct 922 ms 66180 KB Output is correct
39 Correct 888 ms 66360 KB Output is correct
40 Correct 954 ms 66112 KB Output is correct
41 Correct 907 ms 66168 KB Output is correct
42 Correct 891 ms 66132 KB Output is correct
43 Correct 898 ms 66212 KB Output is correct
44 Correct 895 ms 66192 KB Output is correct
45 Correct 891 ms 66144 KB Output is correct
46 Correct 907 ms 66112 KB Output is correct
47 Correct 907 ms 66200 KB Output is correct
48 Correct 923 ms 66208 KB Output is correct
49 Correct 905 ms 66120 KB Output is correct
50 Correct 897 ms 66148 KB Output is correct
51 Correct 885 ms 66180 KB Output is correct
52 Correct 909 ms 66136 KB Output is correct
53 Correct 899 ms 66180 KB Output is correct
54 Correct 886 ms 66148 KB Output is correct
55 Correct 901 ms 66116 KB Output is correct
56 Correct 900 ms 66216 KB Output is correct
57 Correct 898 ms 66104 KB Output is correct
58 Correct 906 ms 66156 KB Output is correct
59 Correct 902 ms 66148 KB Output is correct
60 Correct 896 ms 66172 KB Output is correct
61 Correct 882 ms 66180 KB Output is correct
62 Correct 908 ms 66172 KB Output is correct
63 Correct 904 ms 66192 KB Output is correct
64 Correct 890 ms 66180 KB Output is correct
65 Correct 902 ms 66160 KB Output is correct
66 Correct 896 ms 66180 KB Output is correct
67 Correct 908 ms 66232 KB Output is correct
68 Correct 893 ms 66144 KB Output is correct
69 Correct 898 ms 66220 KB Output is correct
70 Correct 886 ms 66152 KB Output is correct
71 Correct 899 ms 66148 KB Output is correct
72 Correct 925 ms 66176 KB Output is correct
73 Correct 879 ms 66180 KB Output is correct
74 Correct 902 ms 66180 KB Output is correct

Subtask #5
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 716 KB Output is correct
2 Correct 2 ms 716 KB Output is correct
3 Correct 2 ms 716 KB Output is correct
4 Correct 2 ms 716 KB Output is correct
5 Correct 2 ms 716 KB Output is correct
6 Correct 2 ms 716 KB Output is correct
7 Correct 3 ms 768 KB Output is correct
8 Correct 3 ms 716 KB Output is correct
9 Correct 2 ms 716 KB Output is correct
10 Correct 3 ms 716 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 0 ms 332 KB Output is correct
15 Correct 0 ms 332 KB Output is correct
16 Correct 2 ms 716 KB Output is correct
17 Correct 2 ms 704 KB Output is correct
18 Correct 2 ms 716 KB Output is correct
19 Correct 2 ms 716 KB Output is correct
20 Correct 2 ms 716 KB Output is correct
21 Correct 2 ms 716 KB Output is correct
22 Correct 2 ms 716 KB Output is correct
23 Correct 2 ms 716 KB Output is correct
24 Correct 3 ms 716 KB Output is correct
25 Correct 2 ms 708 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 0 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 0 ms 332 KB Output is correct
30 Correct 1 ms 308 KB Output is correct
31 Correct 0 ms 332 KB Output is correct
32 Correct 0 ms 332 KB Output is correct
33 Correct 0 ms 312 KB Output is correct
34 Correct 0 ms 332 KB Output is correct
35 Correct 0 ms 312 KB Output is correct
36 Correct 2 ms 716 KB Output is correct
37 Correct 2 ms 716 KB Output is correct
38 Correct 2 ms 704 KB Output is correct
39 Correct 2 ms 716 KB Output is correct
40 Correct 2 ms 704 KB Output is correct
41 Correct 2 ms 716 KB Output is correct
42 Correct 2 ms 700 KB Output is correct
43 Correct 2 ms 716 KB Output is correct
44 Correct 2 ms 704 KB Output is correct
45 Correct 2 ms 716 KB Output is correct
46 Correct 2 ms 716 KB Output is correct
47 Correct 3 ms 696 KB Output is correct
48 Correct 890 ms 66288 KB Output is correct
49 Correct 903 ms 66208 KB Output is correct
50 Correct 895 ms 66200 KB Output is correct
51 Correct 882 ms 66308 KB Output is correct
52 Correct 910 ms 66192 KB Output is correct
53 Correct 922 ms 66180 KB Output is correct
54 Correct 888 ms 66360 KB Output is correct
55 Correct 954 ms 66112 KB Output is correct
56 Correct 907 ms 66168 KB Output is correct
57 Correct 891 ms 66132 KB Output is correct
58 Correct 898 ms 66212 KB Output is correct
59 Correct 895 ms 66192 KB Output is correct
60 Correct 891 ms 66144 KB Output is correct
61 Correct 907 ms 66112 KB Output is correct
62 Correct 907 ms 66200 KB Output is correct
63 Correct 923 ms 66208 KB Output is correct
64 Correct 905 ms 66120 KB Output is correct
65 Correct 897 ms 66148 KB Output is correct
66 Correct 885 ms 66180 KB Output is correct
67 Correct 909 ms 66136 KB Output is correct
68 Correct 899 ms 66180 KB Output is correct
69 Correct 886 ms 66148 KB Output is correct
70 Correct 901 ms 66116 KB Output is correct
71 Correct 900 ms 66216 KB Output is correct
72 Correct 898 ms 66104 KB Output is correct
73 Correct 906 ms 66156 KB Output is correct
74 Correct 902 ms 66148 KB Output is correct
75 Correct 896 ms 66172 KB Output is correct
76 Correct 882 ms 66180 KB Output is correct
77 Correct 908 ms 66172 KB Output is correct
78 Correct 904 ms 66192 KB Output is correct
79 Correct 890 ms 66180 KB Output is correct
80 Correct 902 ms 66160 KB Output is correct
81 Correct 896 ms 66180 KB Output is correct
82 Correct 908 ms 66232 KB Output is correct
83 Correct 893 ms 66144 KB Output is correct
84 Correct 898 ms 66220 KB Output is correct
85 Correct 886 ms 66152 KB Output is correct
86 Correct 899 ms 66148 KB Output is correct
87 Correct 925 ms 66176 KB Output is correct
88 Correct 879 ms 66180 KB Output is correct
89 Correct 902 ms 66180 KB Output is correct
90 Correct 892 ms 66140 KB Output is correct
91 Correct 914 ms 66120 KB Output is correct
92 Correct 876 ms 66208 KB Output is correct
93 Correct 909 ms 66116 KB Output is correct
94 Correct 910 ms 66348 KB Output is correct
95 Correct 890 ms 66180 KB Output is correct
96 Correct 888 ms 66220 KB Output is correct
97 Correct 920 ms 66284 KB Output is correct
98 Correct 941 ms 66404 KB Output is correct
99 Correct 890 ms 66112 KB Output is correct
100 Correct 403 ms 33324 KB Output is correct
101 Correct 444 ms 33364 KB Output is correct
102 Correct 445 ms 33316 KB Output is correct
103 Correct 432 ms 33328 KB Output is correct
104 Correct 422 ms 33404 KB Output is correct
105 Correct 585 ms 66144 KB Output is correct
106 Correct 638 ms 66160 KB Output is correct
107 Correct 569 ms 66148 KB Output is correct
108 Correct 628 ms 66232 KB Output is correct
109 Correct 571 ms 66148 KB Output is correct
110 Correct 828 ms 66144 KB Output is correct
111 Correct 831 ms 66168 KB Output is correct
112 Correct 865 ms 66180 KB Output is correct
113 Correct 865 ms 66124 KB Output is correct
114 Correct 833 ms 66148 KB Output is correct
115 Correct 834 ms 66208 KB Output is correct
116 Correct 832 ms 66144 KB Output is correct
117 Correct 826 ms 66224 KB Output is correct
118 Correct 815 ms 66264 KB Output is correct
119 Correct 821 ms 66148 KB Output is correct
120 Incorrect 0 ms 332 KB Output isn't correct
121 Halted 0 ms 0 KB -