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답안 #229106

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
229106 2020-05-03T11:35:47 Z kig9981 Cake 3 (JOI19_cake3) C++17
100 / 100
 1345 ms 137980 KB 
#include <bits/stdc++.h>

#ifdef NON_SUBMIT
#define TEST(n) (n)
#define tout cerr
#else
#define TEST(n) ((void)0)
#define tout cin
#endif

using namespace std;

struct PST
{
	int l, r, c;
	long long s;
	PST() : l(0), r(0), c(0), s(0) {}
};

const int SZ=1<<18;
int N, M, node_cnt;
pair<int,int> C[200000], x[200000];
PST tree[5555555];
long long ans=-0x7fffffffffffffffLL;

void set_tree(int b, int n, int v, int p, int s=0, int e=SZ-1)
{
	int m=(s+e)>>1;
	if(s==e) {
		tree[p].s=v;
		tree[p].c=1;
		return;
	}
	if(n<=m) {
		tree[p].l=node_cnt++;
		tree[p].r=tree[b].r;
		set_tree(tree[b].l,n,v,tree[p].l,s,m);
	}
	else {
		tree[p].r=node_cnt++;
		tree[p].l=tree[b].l;
		set_tree(tree[b].r,n,v,tree[p].r,m+1,e);
	}
	tree[p].s=tree[tree[p].l].s+tree[tree[p].r].s;
	tree[p].c=tree[tree[p].l].c+tree[tree[p].r].c;
}

int kth(int l, int r, int k)
{
	int s=0, e=SZ-1;
	while(s<e) {
		int m=(s+e)>>1;
		if(tree[tree[r].l].c-tree[tree[l].l].c>=k) {
			l=tree[l].l;
			r=tree[r].l;
			e=m;
		}
		else {
			k-=tree[tree[r].l].c-tree[tree[l].l].c;
			l=tree[l].r;
			r=tree[r].r;
			s=m+1;
		}
	}
	return s;
}

long long get_sum(int n1, int n2, int p, int s=0, int e=SZ-1)
{
	int m=(s+e)>>1;
	if(p==0 || n2<n1 || n2<s || e<n1) return 0;
	if(n1<=s && e<=n2) return tree[p].s;
	return get_sum(n1,n2,tree[p].l,s,m)+get_sum(n1,n2,tree[p].r,m+1,e);
}

void solve(int s1, int e1, int s2, int e2)
{
	int m1=(s1+e1)>>1, m2=-1;
	long long mx=-0x7fffffffffffffffLL, t;
	if(s1>e1) return;
	for(int i=max(s2,m1+M-1);i<=e2;i++) {
		int k=kth(m1,i+1,M);
		if((t=get_sum(0,k,i+1)-get_sum(0,k,m1)-2LL*(C[i].first-C[m1].first))>=mx) {
			mx=t;
			m2=i;
		}
	}
	ans=max(ans,mx);
	solve(s1,m1-1,s2,m2);
	solve(m1+1,e1,m2,e2);
}

int main()
{
	ios::sync_with_stdio(false);
	cin.tie(NULL); cout.tie(NULL);
	TEST(freopen("input.txt","r",stdin));
	TEST(freopen("output.txt","w",stdout));
	TEST(freopen("debug.txt","w",stderr));
	cin>>N>>M; node_cnt=N+1;
	for(int i=0;i<N;i++) cin>>C[i].second>>C[i].first;
	sort(C,C+N);
	for(int i=0;i<N;i++) x[i]={C[i].second,i};
	sort(x,x+N);
	for(int i=0;i<N;i++) C[x[i].second].second=i;
	for(int i=0;i<N;i++) set_tree(i,N-C[i].second,x[C[i].second].first,i+1);
	solve(0,N-M,M-1,N-1);
	cout<<ans<<'\n';
	return 0;
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 68 ms 130812 KB Output is correct
2 Correct 68 ms 130812 KB Output is correct
3 Correct 69 ms 130784 KB Output is correct
4 Correct 66 ms 130808 KB Output is correct
5 Correct 67 ms 130808 KB Output is correct
6 Correct 66 ms 130808 KB Output is correct
7 Correct 67 ms 130808 KB Output is correct
8 Correct 67 ms 130808 KB Output is correct
9 Correct 66 ms 130808 KB Output is correct
10 Correct 67 ms 130808 KB Output is correct
11 Correct 68 ms 130808 KB Output is correct
12 Correct 67 ms 130808 KB Output is correct
13 Correct 68 ms 130808 KB Output is correct
14 Correct 67 ms 130808 KB Output is correct
15 Correct 68 ms 130808 KB Output is correct
16 Correct 67 ms 130808 KB Output is correct
17 Correct 66 ms 130808 KB Output is correct
18 Correct 68 ms 130808 KB Output is correct
19 Correct 69 ms 130808 KB Output is correct
20 Correct 66 ms 130812 KB Output is correct
21 Correct 67 ms 130848 KB Output is correct
22 Correct 66 ms 130808 KB Output is correct
23 Correct 66 ms 130812 KB Output is correct
24 Correct 67 ms 130808 KB Output is correct
25 Correct 68 ms 130808 KB Output is correct
26 Correct 69 ms 130808 KB Output is correct
27 Correct 67 ms 130808 KB Output is correct
28 Correct 68 ms 130808 KB Output is correct
29 Correct 66 ms 130808 KB Output is correct
30 Correct 66 ms 130808 KB Output is correct
31 Correct 69 ms 130808 KB Output is correct
32 Correct 69 ms 130808 KB Output is correct
33 Correct 67 ms 130808 KB Output is correct
34 Correct 66 ms 130808 KB Output is correct
35 Correct 66 ms 130808 KB Output is correct
36 Correct 68 ms 130808 KB Output is correct
37 Correct 66 ms 130808 KB Output is correct

Subtask #2
19.0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 68 ms 130812 KB Output is correct
2 Correct 68 ms 130812 KB Output is correct
3 Correct 69 ms 130784 KB Output is correct
4 Correct 66 ms 130808 KB Output is correct
5 Correct 67 ms 130808 KB Output is correct
6 Correct 66 ms 130808 KB Output is correct
7 Correct 67 ms 130808 KB Output is correct
8 Correct 67 ms 130808 KB Output is correct
9 Correct 66 ms 130808 KB Output is correct
10 Correct 67 ms 130808 KB Output is correct
11 Correct 68 ms 130808 KB Output is correct
12 Correct 67 ms 130808 KB Output is correct
13 Correct 68 ms 130808 KB Output is correct
14 Correct 67 ms 130808 KB Output is correct
15 Correct 68 ms 130808 KB Output is correct
16 Correct 67 ms 130808 KB Output is correct
17 Correct 66 ms 130808 KB Output is correct
18 Correct 68 ms 130808 KB Output is correct
19 Correct 69 ms 130808 KB Output is correct
20 Correct 66 ms 130812 KB Output is correct
21 Correct 67 ms 130848 KB Output is correct
22 Correct 66 ms 130808 KB Output is correct
23 Correct 66 ms 130812 KB Output is correct
24 Correct 67 ms 130808 KB Output is correct
25 Correct 68 ms 130808 KB Output is correct
26 Correct 69 ms 130808 KB Output is correct
27 Correct 67 ms 130808 KB Output is correct
28 Correct 68 ms 130808 KB Output is correct
29 Correct 66 ms 130808 KB Output is correct
30 Correct 66 ms 130808 KB Output is correct
31 Correct 69 ms 130808 KB Output is correct
32 Correct 69 ms 130808 KB Output is correct
33 Correct 67 ms 130808 KB Output is correct
34 Correct 66 ms 130808 KB Output is correct
35 Correct 66 ms 130808 KB Output is correct
36 Correct 68 ms 130808 KB Output is correct
37 Correct 66 ms 130808 KB Output is correct
38 Correct 72 ms 130808 KB Output is correct
39 Correct 74 ms 130808 KB Output is correct
40 Correct 73 ms 130808 KB Output is correct
41 Correct 69 ms 130808 KB Output is correct
42 Correct 70 ms 131064 KB Output is correct
43 Correct 70 ms 131064 KB Output is correct
44 Correct 72 ms 130808 KB Output is correct
45 Correct 72 ms 130920 KB Output is correct
46 Correct 71 ms 130808 KB Output is correct
47 Correct 74 ms 130936 KB Output is correct
48 Correct 73 ms 130936 KB Output is correct
49 Correct 75 ms 130936 KB Output is correct
50 Correct 72 ms 130936 KB Output is correct
51 Correct 70 ms 130808 KB Output is correct
52 Correct 70 ms 130808 KB Output is correct
53 Correct 74 ms 130936 KB Output is correct
54 Correct 69 ms 130936 KB Output is correct
55 Correct 68 ms 130808 KB Output is correct
56 Correct 68 ms 130808 KB Output is correct
57 Correct 75 ms 130912 KB Output is correct
58 Correct 69 ms 130808 KB Output is correct
59 Correct 70 ms 130936 KB Output is correct
60 Correct 68 ms 130936 KB Output is correct
61 Correct 69 ms 130936 KB Output is correct
62 Correct 69 ms 130936 KB Output is correct
63 Correct 73 ms 130808 KB Output is correct
64 Correct 76 ms 130808 KB Output is correct
65 Correct 86 ms 130828 KB Output is correct
66 Correct 77 ms 130912 KB Output is correct
67 Correct 76 ms 130912 KB Output is correct
68 Correct 78 ms 130912 KB Output is correct
69 Correct 79 ms 130808 KB Output is correct
70 Correct 79 ms 130912 KB Output is correct
71 Correct 73 ms 130912 KB Output is correct
72 Correct 75 ms 130876 KB Output is correct
73 Correct 76 ms 130808 KB Output is correct
74 Correct 70 ms 130888 KB Output is correct

Subtask #3
76.0 / 76.0

# 결과 실행 시간 메모리 Grader output
1 Correct 68 ms 130812 KB Output is correct
2 Correct 68 ms 130812 KB Output is correct
3 Correct 69 ms 130784 KB Output is correct
4 Correct 66 ms 130808 KB Output is correct
5 Correct 67 ms 130808 KB Output is correct
6 Correct 66 ms 130808 KB Output is correct
7 Correct 67 ms 130808 KB Output is correct
8 Correct 67 ms 130808 KB Output is correct
9 Correct 66 ms 130808 KB Output is correct
10 Correct 67 ms 130808 KB Output is correct
11 Correct 68 ms 130808 KB Output is correct
12 Correct 67 ms 130808 KB Output is correct
13 Correct 68 ms 130808 KB Output is correct
14 Correct 67 ms 130808 KB Output is correct
15 Correct 68 ms 130808 KB Output is correct
16 Correct 67 ms 130808 KB Output is correct
17 Correct 66 ms 130808 KB Output is correct
18 Correct 68 ms 130808 KB Output is correct
19 Correct 69 ms 130808 KB Output is correct
20 Correct 66 ms 130812 KB Output is correct
21 Correct 67 ms 130848 KB Output is correct
22 Correct 66 ms 130808 KB Output is correct
23 Correct 66 ms 130812 KB Output is correct
24 Correct 67 ms 130808 KB Output is correct
25 Correct 68 ms 130808 KB Output is correct
26 Correct 69 ms 130808 KB Output is correct
27 Correct 67 ms 130808 KB Output is correct
28 Correct 68 ms 130808 KB Output is correct
29 Correct 66 ms 130808 KB Output is correct
30 Correct 66 ms 130808 KB Output is correct
31 Correct 69 ms 130808 KB Output is correct
32 Correct 69 ms 130808 KB Output is correct
33 Correct 67 ms 130808 KB Output is correct
34 Correct 66 ms 130808 KB Output is correct
35 Correct 66 ms 130808 KB Output is correct
36 Correct 68 ms 130808 KB Output is correct
37 Correct 66 ms 130808 KB Output is correct
38 Correct 72 ms 130808 KB Output is correct
39 Correct 74 ms 130808 KB Output is correct
40 Correct 73 ms 130808 KB Output is correct
41 Correct 69 ms 130808 KB Output is correct
42 Correct 70 ms 131064 KB Output is correct
43 Correct 70 ms 131064 KB Output is correct
44 Correct 72 ms 130808 KB Output is correct
45 Correct 72 ms 130920 KB Output is correct
46 Correct 71 ms 130808 KB Output is correct
47 Correct 74 ms 130936 KB Output is correct
48 Correct 73 ms 130936 KB Output is correct
49 Correct 75 ms 130936 KB Output is correct
50 Correct 72 ms 130936 KB Output is correct
51 Correct 70 ms 130808 KB Output is correct
52 Correct 70 ms 130808 KB Output is correct
53 Correct 74 ms 130936 KB Output is correct
54 Correct 69 ms 130936 KB Output is correct
55 Correct 68 ms 130808 KB Output is correct
56 Correct 68 ms 130808 KB Output is correct
57 Correct 75 ms 130912 KB Output is correct
58 Correct 69 ms 130808 KB Output is correct
59 Correct 70 ms 130936 KB Output is correct
60 Correct 68 ms 130936 KB Output is correct
61 Correct 69 ms 130936 KB Output is correct
62 Correct 69 ms 130936 KB Output is correct
63 Correct 73 ms 130808 KB Output is correct
64 Correct 76 ms 130808 KB Output is correct
65 Correct 86 ms 130828 KB Output is correct
66 Correct 77 ms 130912 KB Output is correct
67 Correct 76 ms 130912 KB Output is correct
68 Correct 78 ms 130912 KB Output is correct
69 Correct 79 ms 130808 KB Output is correct
70 Correct 79 ms 130912 KB Output is correct
71 Correct 73 ms 130912 KB Output is correct
72 Correct 75 ms 130876 KB Output is correct
73 Correct 76 ms 130808 KB Output is correct
74 Correct 70 ms 130888 KB Output is correct
75 Correct 1125 ms 137392 KB Output is correct
76 Correct 1249 ms 137292 KB Output is correct
77 Correct 967 ms 137400 KB Output is correct
78 Correct 1004 ms 137592 KB Output is correct
79 Correct 255 ms 137464 KB Output is correct
80 Correct 321 ms 137336 KB Output is correct
81 Correct 1099 ms 136696 KB Output is correct
82 Correct 1345 ms 136824 KB Output is correct
83 Correct 1240 ms 137092 KB Output is correct
84 Correct 1236 ms 136964 KB Output is correct
85 Correct 1106 ms 136824 KB Output is correct
86 Correct 598 ms 136672 KB Output is correct
87 Correct 686 ms 136416 KB Output is correct
88 Correct 975 ms 136440 KB Output is correct
89 Correct 911 ms 136700 KB Output is correct
90 Correct 636 ms 136824 KB Output is correct
91 Correct 436 ms 136444 KB Output is correct
92 Correct 466 ms 136568 KB Output is correct
93 Correct 518 ms 136568 KB Output is correct
94 Correct 411 ms 136952 KB Output is correct
95 Correct 597 ms 136952 KB Output is correct
96 Correct 723 ms 136440 KB Output is correct
97 Correct 768 ms 136824 KB Output is correct
98 Correct 824 ms 136952 KB Output is correct
99 Correct 709 ms 136976 KB Output is correct
100 Correct 596 ms 136568 KB Output is correct
101 Correct 607 ms 136440 KB Output is correct
102 Correct 1054 ms 136568 KB Output is correct
103 Correct 950 ms 136440 KB Output is correct
104 Correct 1104 ms 136744 KB Output is correct
105 Correct 880 ms 136696 KB Output is correct
106 Correct 875 ms 136952 KB Output is correct
107 Correct 769 ms 136648 KB Output is correct
108 Correct 931 ms 137336 KB Output is correct
109 Correct 765 ms 137724 KB Output is correct
110 Correct 465 ms 136056 KB Output is correct
111 Correct 636 ms 136172 KB Output is correct
112 Correct 844 ms 135824 KB Output is correct
113 Correct 284 ms 137980 KB Output is correct