답안 #826723

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
826723	2023-08-15T22:59:57 Z	arnold518	메기 농장 (IOI22_fish)	C++17	100 / 100	155 ms	39144 KB

fish

#include "fish.h"
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int MAXN = 1e5;
const ll INF = 1e18;

int N, M;
vector<pii> V[MAXN+10];
vector<ll> dp1[MAXN+10], dp2[MAXN+10];

struct BIT
{
	ll tree[MAXN+10];
	void init() { for(int i=1; i<=N; i++) tree[i]=-INF; }
	void update(int i, ll k) { for(; i<=N; i+=(i&-i)) tree[i]=max(tree[i], k); }
	ll query(int i) { ll ret=-INF; for(; i>0; i-=(i&-i)) ret=max(ret, tree[i]); return ret; }
}bit1, bit2;

ll max_weights(int _N, int _M, vector<int> _X, vector<int> _Y, vector<int> _W)
{
	N=_N; M=_M;
	for(int i=0; i<M; i++)
	{
		int x=_X[i]+1, y=_Y[i]+1, w=_W[i];
		V[x].push_back({y, w});
	}
	for(int i=0; i<=N+1; i++)
	{
		sort(V[i].begin(), V[i].end());
		if(V[i].empty() || V[i][0].first!=1) V[i].push_back({1, 0});
		if(V[i].back().first!=N) V[i].push_back({N, 0});
		sort(V[i].begin(), V[i].end());

		dp1[i]=vector<ll>(V[i].size(), -INF);
		dp2[i]=vector<ll>(V[i].size(), -INF);
	}

	
	bit1.init(); bit2.init();
	dp2[0][0]=0; dp1[0][dp1[0].size()-1]=0;
	ll p=-INF, q=-INF, ans=0;
	for(int i=0; i<=N+1; i++)
	{
		int t=V[i].size();
		if(i-1>=0) p=max(p, dp2[i-1][0]);
		if(i-2>=0) q=max(q, dp1[i-2].back());

		dp1[i][0]=max(dp1[i][0], p+V[i][0].second);
		if(i-2>=0) dp1[i][0]=max(dp1[i][0], dp1[i-2].back()+V[i][0].second);
		dp2[i][t-1]=max(dp2[i][t-1], q+V[i][t-1].second);
		for(int j=0; j<t; j++)
		{
			auto [y, w] = V[i][j];
			dp1[i][j]=max(dp1[i][j], bit1.query(y-1)+w);
			bit1.update(y, dp1[i][j]);
		}
		for(int j=t-1; j>=0; j--)
		{
			auto [y, w] = V[i][j];
			dp2[i][j]=max(dp2[i][j], bit2.query(N-y)+w);
			bit2.update(N-y+1, dp2[i][j]);
		}

		ans=max(ans, dp2[i][0]);
		// for(auto it : dp1[i]) printf("%lld ", it); printf("\n");
		// for(auto it : dp2[i]) printf("%lld ", it); printf("\n");
		// printf("\n");
	}
	return ans;
}

Subtask #1
3.0 / 3.0

#	결과	실행 시간	메모리	Grader output
1	Correct	55 ms	20928 KB	Output is correct
2	Correct	62 ms	22888 KB	Output is correct
3	Correct	28 ms	18260 KB	Output is correct
4	Correct	28 ms	18260 KB	Output is correct
5	Correct	150 ms	32412 KB	Output is correct
6	Correct	152 ms	33224 KB	Output is correct

Subtask #2
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	7252 KB	Output is correct
2	Correct	83 ms	24764 KB	Output is correct
3	Correct	121 ms	27736 KB	Output is correct
4	Correct	53 ms	21012 KB	Output is correct
5	Correct	62 ms	22988 KB	Output is correct
6	Correct	3 ms	7252 KB	Output is correct
7	Correct	3 ms	7356 KB	Output is correct
8	Correct	3 ms	7356 KB	Output is correct
9	Correct	3 ms	7252 KB	Output is correct
10	Correct	27 ms	18264 KB	Output is correct
11	Correct	28 ms	18244 KB	Output is correct
12	Correct	55 ms	22376 KB	Output is correct
13	Correct	64 ms	24760 KB	Output is correct
14	Correct	55 ms	22396 KB	Output is correct
15	Correct	66 ms	24148 KB	Output is correct
16	Correct	54 ms	22464 KB	Output is correct
17	Correct	61 ms	24112 KB	Output is correct

Subtask #3
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	27 ms	18308 KB	Output is correct
2	Correct	34 ms	18404 KB	Output is correct
3	Correct	38 ms	18532 KB	Output is correct
4	Correct	37 ms	19056 KB	Output is correct
5	Correct	55 ms	20612 KB	Output is correct
6	Correct	51 ms	20536 KB	Output is correct
7	Correct	69 ms	20632 KB	Output is correct
8	Correct	52 ms	20564 KB	Output is correct

Subtask #4
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	7252 KB	Output is correct
2	Correct	3 ms	7256 KB	Output is correct
3	Correct	3 ms	7252 KB	Output is correct
4	Correct	4 ms	7380 KB	Output is correct
5	Correct	3 ms	7252 KB	Output is correct
6	Correct	3 ms	7356 KB	Output is correct
7	Correct	3 ms	7252 KB	Output is correct
8	Correct	3 ms	7252 KB	Output is correct
9	Correct	4 ms	7380 KB	Output is correct
10	Correct	4 ms	7508 KB	Output is correct
11	Correct	4 ms	7380 KB	Output is correct
12	Correct	4 ms	7380 KB	Output is correct
13	Correct	3 ms	7356 KB	Output is correct
14	Correct	4 ms	7380 KB	Output is correct

Subtask #5
21.0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	7252 KB	Output is correct
2	Correct	3 ms	7256 KB	Output is correct
3	Correct	3 ms	7252 KB	Output is correct
4	Correct	4 ms	7380 KB	Output is correct
5	Correct	3 ms	7252 KB	Output is correct
6	Correct	3 ms	7356 KB	Output is correct
7	Correct	3 ms	7252 KB	Output is correct
8	Correct	3 ms	7252 KB	Output is correct
9	Correct	4 ms	7380 KB	Output is correct
10	Correct	4 ms	7508 KB	Output is correct
11	Correct	4 ms	7380 KB	Output is correct
12	Correct	4 ms	7380 KB	Output is correct
13	Correct	3 ms	7356 KB	Output is correct
14	Correct	4 ms	7380 KB	Output is correct
15	Correct	3 ms	7380 KB	Output is correct
16	Correct	4 ms	7408 KB	Output is correct
17	Correct	17 ms	10324 KB	Output is correct
18	Correct	17 ms	10580 KB	Output is correct
19	Correct	17 ms	10568 KB	Output is correct
20	Correct	18 ms	10564 KB	Output is correct
21	Correct	17 ms	10452 KB	Output is correct
22	Correct	35 ms	13632 KB	Output is correct
23	Correct	6 ms	7892 KB	Output is correct
24	Correct	13 ms	9300 KB	Output is correct
25	Correct	5 ms	7368 KB	Output is correct
26	Correct	6 ms	7852 KB	Output is correct

Subtask #6
17.0 / 17.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	7252 KB	Output is correct
2	Correct	3 ms	7256 KB	Output is correct
3	Correct	3 ms	7252 KB	Output is correct
4	Correct	4 ms	7380 KB	Output is correct
5	Correct	3 ms	7252 KB	Output is correct
6	Correct	3 ms	7356 KB	Output is correct
7	Correct	3 ms	7252 KB	Output is correct
8	Correct	3 ms	7252 KB	Output is correct
9	Correct	4 ms	7380 KB	Output is correct
10	Correct	4 ms	7508 KB	Output is correct
11	Correct	4 ms	7380 KB	Output is correct
12	Correct	4 ms	7380 KB	Output is correct
13	Correct	3 ms	7356 KB	Output is correct
14	Correct	4 ms	7380 KB	Output is correct
15	Correct	3 ms	7380 KB	Output is correct
16	Correct	4 ms	7408 KB	Output is correct
17	Correct	17 ms	10324 KB	Output is correct
18	Correct	17 ms	10580 KB	Output is correct
19	Correct	17 ms	10568 KB	Output is correct
20	Correct	18 ms	10564 KB	Output is correct
21	Correct	17 ms	10452 KB	Output is correct
22	Correct	35 ms	13632 KB	Output is correct
23	Correct	6 ms	7892 KB	Output is correct
24	Correct	13 ms	9300 KB	Output is correct
25	Correct	5 ms	7368 KB	Output is correct
26	Correct	6 ms	7852 KB	Output is correct
27	Correct	5 ms	7764 KB	Output is correct
28	Correct	71 ms	22680 KB	Output is correct
29	Correct	115 ms	28476 KB	Output is correct
30	Correct	108 ms	28344 KB	Output is correct
31	Correct	101 ms	28108 KB	Output is correct
32	Correct	95 ms	28904 KB	Output is correct
33	Correct	102 ms	28128 KB	Output is correct
34	Correct	102 ms	28108 KB	Output is correct
35	Correct	41 ms	15564 KB	Output is correct
36	Correct	102 ms	28684 KB	Output is correct

Subtask #7
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	27 ms	18308 KB	Output is correct
2	Correct	34 ms	18404 KB	Output is correct
3	Correct	38 ms	18532 KB	Output is correct
4	Correct	37 ms	19056 KB	Output is correct
5	Correct	55 ms	20612 KB	Output is correct
6	Correct	51 ms	20536 KB	Output is correct
7	Correct	69 ms	20632 KB	Output is correct
8	Correct	52 ms	20564 KB	Output is correct
9	Correct	57 ms	22104 KB	Output is correct
10	Correct	45 ms	17612 KB	Output is correct
11	Correct	85 ms	28004 KB	Output is correct
12	Correct	3 ms	7352 KB	Output is correct
13	Correct	3 ms	7252 KB	Output is correct
14	Correct	3 ms	7252 KB	Output is correct
15	Correct	3 ms	7252 KB	Output is correct
16	Correct	3 ms	7252 KB	Output is correct
17	Correct	3 ms	7252 KB	Output is correct
18	Correct	27 ms	18220 KB	Output is correct
19	Correct	27 ms	18260 KB	Output is correct
20	Correct	27 ms	18292 KB	Output is correct
21	Correct	27 ms	18260 KB	Output is correct
22	Correct	66 ms	24768 KB	Output is correct
23	Correct	95 ms	31700 KB	Output is correct
24	Correct	100 ms	32596 KB	Output is correct

Subtask #8
16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	55 ms	20928 KB	Output is correct
2	Correct	62 ms	22888 KB	Output is correct
3	Correct	28 ms	18260 KB	Output is correct
4	Correct	28 ms	18260 KB	Output is correct
5	Correct	150 ms	32412 KB	Output is correct
6	Correct	152 ms	33224 KB	Output is correct
7	Correct	3 ms	7252 KB	Output is correct
8	Correct	83 ms	24764 KB	Output is correct
9	Correct	121 ms	27736 KB	Output is correct
10	Correct	53 ms	21012 KB	Output is correct
11	Correct	62 ms	22988 KB	Output is correct
12	Correct	3 ms	7252 KB	Output is correct
13	Correct	3 ms	7356 KB	Output is correct
14	Correct	3 ms	7356 KB	Output is correct
15	Correct	3 ms	7252 KB	Output is correct
16	Correct	27 ms	18264 KB	Output is correct
17	Correct	28 ms	18244 KB	Output is correct
18	Correct	55 ms	22376 KB	Output is correct
19	Correct	64 ms	24760 KB	Output is correct
20	Correct	55 ms	22396 KB	Output is correct
21	Correct	66 ms	24148 KB	Output is correct
22	Correct	54 ms	22464 KB	Output is correct
23	Correct	61 ms	24112 KB	Output is correct
24	Correct	27 ms	18308 KB	Output is correct
25	Correct	34 ms	18404 KB	Output is correct
26	Correct	38 ms	18532 KB	Output is correct
27	Correct	37 ms	19056 KB	Output is correct
28	Correct	55 ms	20612 KB	Output is correct
29	Correct	51 ms	20536 KB	Output is correct
30	Correct	69 ms	20632 KB	Output is correct
31	Correct	52 ms	20564 KB	Output is correct
32	Correct	3 ms	7252 KB	Output is correct
33	Correct	3 ms	7256 KB	Output is correct
34	Correct	3 ms	7252 KB	Output is correct
35	Correct	4 ms	7380 KB	Output is correct
36	Correct	3 ms	7252 KB	Output is correct
37	Correct	3 ms	7356 KB	Output is correct
38	Correct	3 ms	7252 KB	Output is correct
39	Correct	3 ms	7252 KB	Output is correct
40	Correct	4 ms	7380 KB	Output is correct
41	Correct	4 ms	7508 KB	Output is correct
42	Correct	4 ms	7380 KB	Output is correct
43	Correct	4 ms	7380 KB	Output is correct
44	Correct	3 ms	7356 KB	Output is correct
45	Correct	4 ms	7380 KB	Output is correct
46	Correct	3 ms	7380 KB	Output is correct
47	Correct	4 ms	7408 KB	Output is correct
48	Correct	17 ms	10324 KB	Output is correct
49	Correct	17 ms	10580 KB	Output is correct
50	Correct	17 ms	10568 KB	Output is correct
51	Correct	18 ms	10564 KB	Output is correct
52	Correct	17 ms	10452 KB	Output is correct
53	Correct	35 ms	13632 KB	Output is correct
54	Correct	6 ms	7892 KB	Output is correct
55	Correct	13 ms	9300 KB	Output is correct
56	Correct	5 ms	7368 KB	Output is correct
57	Correct	6 ms	7852 KB	Output is correct
58	Correct	5 ms	7764 KB	Output is correct
59	Correct	71 ms	22680 KB	Output is correct
60	Correct	115 ms	28476 KB	Output is correct
61	Correct	108 ms	28344 KB	Output is correct
62	Correct	101 ms	28108 KB	Output is correct
63	Correct	95 ms	28904 KB	Output is correct
64	Correct	102 ms	28128 KB	Output is correct
65	Correct	102 ms	28108 KB	Output is correct
66	Correct	41 ms	15564 KB	Output is correct
67	Correct	102 ms	28684 KB	Output is correct
68	Correct	57 ms	22104 KB	Output is correct
69	Correct	45 ms	17612 KB	Output is correct
70	Correct	85 ms	28004 KB	Output is correct
71	Correct	3 ms	7352 KB	Output is correct
72	Correct	3 ms	7252 KB	Output is correct
73	Correct	3 ms	7252 KB	Output is correct
74	Correct	3 ms	7252 KB	Output is correct
75	Correct	3 ms	7252 KB	Output is correct
76	Correct	3 ms	7252 KB	Output is correct
77	Correct	27 ms	18220 KB	Output is correct
78	Correct	27 ms	18260 KB	Output is correct
79	Correct	27 ms	18292 KB	Output is correct
80	Correct	27 ms	18260 KB	Output is correct
81	Correct	66 ms	24768 KB	Output is correct
82	Correct	95 ms	31700 KB	Output is correct
83	Correct	100 ms	32596 KB	Output is correct
84	Correct	136 ms	37784 KB	Output is correct
85	Correct	138 ms	38156 KB	Output is correct
86	Correct	152 ms	38176 KB	Output is correct
87	Correct	155 ms	39144 KB	Output is correct
88	Correct	3 ms	7252 KB	Output is correct
89	Correct	152 ms	39136 KB	Output is correct
90	Correct	135 ms	37984 KB	Output is correct
91	Correct	130 ms	37964 KB	Output is correct

답안 #826723

Compilation message