답안 #292589

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
292589	2020-09-07T10:15:49 Z	Pajaraja	Monochrome Points (JOI20_monochrome)	C++17	100 / 100	166 ms	4240 KB

monochrome

#include <bits/stdc++.h>
#define MAXN 200007
using namespace std;
vector<int> b,w;
int dx[MAXN],dy[MAXN],n;
long long val(int x)
{
	long long solc=0;
	int k=x,p=x;
	for(int i=0;i<x;i++)
	{
		while(w[k-x]<b[i] && k<n) k++;
		while(b[p]<w[n-x+i] && p<n) p++;
		solc+=(n-max(k,p)+min(k,p)-x);
	}
	k=0;
	for(int i=0;i<x;i++) 
	{
		while(w[n-x+k]<b[i]) k++;
		solc+=(i-k);
	}
	k=x;
	for(int i=x;i<n;i++) 
	{
		while(b[k]<w[i-x]) k++;
		solc+=(i-k);
	}
	return solc;
}
bool validl(int x)
{
	for(int i=0;i<x;i++) {dx[i]=b[i]; dy[i]=w[n-x+i];}
	for(int i=x;i<n;i++) {dx[i]=b[i]; dy[i]=w[i-x];}
	for(int i=0;i<x;i++) if(dx[i]>dy[i]) return false;
	return true;
}

bool validr(int x)
{
	for(int i=0;i<x;i++) {dx[i]=b[i]; dy[i]=w[n-x+i];}
	for(int i=x;i<n;i++) {dx[i]=b[i]; dy[i]=w[i-x];}
	for(int i=x;i<n;i++) if(dx[i]<dy[i]) return false;
	return true;
}
int main()
{
	string s;
	cin>>n; cin>>s;
	for(int i=0;i<2*n;i++) 
	{
		if(s[i]=='W') w.push_back(i);
		else b.push_back(i);
	}
	long long sol=0;
	int r=n,l=0,rzl,rzr;
	while(l!=r)
	{
		int s=(l+r)/2;
		if(validr(s)) r=s;
		else l=s+1;
	}
	rzl=l;
	r=n; l=0;
	while(l!=r)
	{
		int s=(l+r+1)/2;
		if(validl(s)) l=s;
		else r=s-1;
	}
	rzr=r;
	l=rzl; r=rzr;
	while(r-l>3)
	{
		int s1=(l+r)/2-1;
		int s2=(l+r)/2+1;
		int x=val(s1),y=val(s2);
		if(x<y) l=s1;
		else r=s2;
	}
	for(int i=l;i<=r;i++) sol=max(sol,val(i));
	cout<<sol;
}

Subtask #1
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	384 KB	Output is correct
2	Correct	0 ms	384 KB	Output is correct
3	Correct	0 ms	256 KB	Output is correct
4	Correct	0 ms	256 KB	Output is correct
5	Correct	0 ms	256 KB	Output is correct
6	Correct	0 ms	256 KB	Output is correct
7	Correct	1 ms	256 KB	Output is correct
8	Correct	1 ms	384 KB	Output is correct
9	Correct	0 ms	256 KB	Output is correct
10	Correct	0 ms	256 KB	Output is correct
11	Correct	0 ms	256 KB	Output is correct
12	Correct	1 ms	256 KB	Output is correct
13	Correct	0 ms	256 KB	Output is correct

Subtask #2
21.0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	384 KB	Output is correct
2	Correct	0 ms	384 KB	Output is correct
3	Correct	0 ms	256 KB	Output is correct
4	Correct	0 ms	256 KB	Output is correct
5	Correct	0 ms	256 KB	Output is correct
6	Correct	0 ms	256 KB	Output is correct
7	Correct	1 ms	256 KB	Output is correct
8	Correct	1 ms	384 KB	Output is correct
9	Correct	0 ms	256 KB	Output is correct
10	Correct	0 ms	256 KB	Output is correct
11	Correct	0 ms	256 KB	Output is correct
12	Correct	1 ms	256 KB	Output is correct
13	Correct	0 ms	256 KB	Output is correct
14	Correct	0 ms	384 KB	Output is correct
15	Correct	0 ms	384 KB	Output is correct
16	Correct	1 ms	384 KB	Output is correct
17	Correct	1 ms	384 KB	Output is correct
18	Correct	0 ms	384 KB	Output is correct
19	Correct	0 ms	384 KB	Output is correct
20	Correct	1 ms	384 KB	Output is correct
21	Correct	0 ms	384 KB	Output is correct
22	Correct	1 ms	384 KB	Output is correct
23	Correct	1 ms	384 KB	Output is correct
24	Correct	1 ms	384 KB	Output is correct
25	Correct	1 ms	384 KB	Output is correct
26	Correct	0 ms	384 KB	Output is correct
27	Correct	1 ms	384 KB	Output is correct
28	Correct	0 ms	384 KB	Output is correct
29	Correct	0 ms	384 KB	Output is correct
30	Correct	0 ms	384 KB	Output is correct
31	Correct	1 ms	384 KB	Output is correct
32	Correct	0 ms	384 KB	Output is correct
33	Correct	1 ms	384 KB	Output is correct

Subtask #3
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	384 KB	Output is correct
2	Correct	0 ms	384 KB	Output is correct
3	Correct	0 ms	256 KB	Output is correct
4	Correct	0 ms	256 KB	Output is correct
5	Correct	0 ms	256 KB	Output is correct
6	Correct	0 ms	256 KB	Output is correct
7	Correct	1 ms	256 KB	Output is correct
8	Correct	1 ms	384 KB	Output is correct
9	Correct	0 ms	256 KB	Output is correct
10	Correct	0 ms	256 KB	Output is correct
11	Correct	0 ms	256 KB	Output is correct
12	Correct	1 ms	256 KB	Output is correct
13	Correct	0 ms	256 KB	Output is correct
14	Correct	0 ms	384 KB	Output is correct
15	Correct	0 ms	384 KB	Output is correct
16	Correct	1 ms	384 KB	Output is correct
17	Correct	1 ms	384 KB	Output is correct
18	Correct	0 ms	384 KB	Output is correct
19	Correct	0 ms	384 KB	Output is correct
20	Correct	1 ms	384 KB	Output is correct
21	Correct	0 ms	384 KB	Output is correct
22	Correct	1 ms	384 KB	Output is correct
23	Correct	1 ms	384 KB	Output is correct
24	Correct	1 ms	384 KB	Output is correct
25	Correct	1 ms	384 KB	Output is correct
26	Correct	0 ms	384 KB	Output is correct
27	Correct	1 ms	384 KB	Output is correct
28	Correct	0 ms	384 KB	Output is correct
29	Correct	0 ms	384 KB	Output is correct
30	Correct	0 ms	384 KB	Output is correct
31	Correct	1 ms	384 KB	Output is correct
32	Correct	0 ms	384 KB	Output is correct
33	Correct	1 ms	384 KB	Output is correct
34	Correct	1 ms	384 KB	Output is correct
35	Correct	2 ms	384 KB	Output is correct
36	Correct	1 ms	384 KB	Output is correct
37	Correct	1 ms	384 KB	Output is correct
38	Correct	1 ms	384 KB	Output is correct
39	Correct	1 ms	384 KB	Output is correct
40	Correct	1 ms	384 KB	Output is correct
41	Correct	1 ms	384 KB	Output is correct
42	Correct	1 ms	416 KB	Output is correct
43	Correct	1 ms	424 KB	Output is correct
44	Correct	1 ms	384 KB	Output is correct
45	Correct	4 ms	384 KB	Output is correct
46	Correct	1 ms	384 KB	Output is correct
47	Correct	1 ms	384 KB	Output is correct
48	Correct	1 ms	384 KB	Output is correct
49	Correct	1 ms	384 KB	Output is correct
50	Correct	1 ms	384 KB	Output is correct
51	Correct	1 ms	384 KB	Output is correct
52	Correct	1 ms	384 KB	Output is correct

Subtask #4
65.0 / 65.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	384 KB	Output is correct
2	Correct	0 ms	384 KB	Output is correct
3	Correct	0 ms	256 KB	Output is correct
4	Correct	0 ms	256 KB	Output is correct
5	Correct	0 ms	256 KB	Output is correct
6	Correct	0 ms	256 KB	Output is correct
7	Correct	1 ms	256 KB	Output is correct
8	Correct	1 ms	384 KB	Output is correct
9	Correct	0 ms	256 KB	Output is correct
10	Correct	0 ms	256 KB	Output is correct
11	Correct	0 ms	256 KB	Output is correct
12	Correct	1 ms	256 KB	Output is correct
13	Correct	0 ms	256 KB	Output is correct
14	Correct	0 ms	384 KB	Output is correct
15	Correct	0 ms	384 KB	Output is correct
16	Correct	1 ms	384 KB	Output is correct
17	Correct	1 ms	384 KB	Output is correct
18	Correct	0 ms	384 KB	Output is correct
19	Correct	0 ms	384 KB	Output is correct
20	Correct	1 ms	384 KB	Output is correct
21	Correct	0 ms	384 KB	Output is correct
22	Correct	1 ms	384 KB	Output is correct
23	Correct	1 ms	384 KB	Output is correct
24	Correct	1 ms	384 KB	Output is correct
25	Correct	1 ms	384 KB	Output is correct
26	Correct	0 ms	384 KB	Output is correct
27	Correct	1 ms	384 KB	Output is correct
28	Correct	0 ms	384 KB	Output is correct
29	Correct	0 ms	384 KB	Output is correct
30	Correct	0 ms	384 KB	Output is correct
31	Correct	1 ms	384 KB	Output is correct
32	Correct	0 ms	384 KB	Output is correct
33	Correct	1 ms	384 KB	Output is correct
34	Correct	1 ms	384 KB	Output is correct
35	Correct	2 ms	384 KB	Output is correct
36	Correct	1 ms	384 KB	Output is correct
37	Correct	1 ms	384 KB	Output is correct
38	Correct	1 ms	384 KB	Output is correct
39	Correct	1 ms	384 KB	Output is correct
40	Correct	1 ms	384 KB	Output is correct
41	Correct	1 ms	384 KB	Output is correct
42	Correct	1 ms	416 KB	Output is correct
43	Correct	1 ms	424 KB	Output is correct
44	Correct	1 ms	384 KB	Output is correct
45	Correct	4 ms	384 KB	Output is correct
46	Correct	1 ms	384 KB	Output is correct
47	Correct	1 ms	384 KB	Output is correct
48	Correct	1 ms	384 KB	Output is correct
49	Correct	1 ms	384 KB	Output is correct
50	Correct	1 ms	384 KB	Output is correct
51	Correct	1 ms	384 KB	Output is correct
52	Correct	1 ms	384 KB	Output is correct
53	Correct	144 ms	4232 KB	Output is correct
54	Correct	144 ms	3916 KB	Output is correct
55	Correct	138 ms	3812 KB	Output is correct
56	Correct	138 ms	4100 KB	Output is correct
57	Correct	53 ms	3980 KB	Output is correct
58	Correct	100 ms	3976 KB	Output is correct
59	Correct	86 ms	4112 KB	Output is correct
60	Correct	166 ms	4104 KB	Output is correct
61	Correct	60 ms	4108 KB	Output is correct
62	Correct	62 ms	4112 KB	Output is correct
63	Correct	78 ms	4104 KB	Output is correct
64	Correct	63 ms	3860 KB	Output is correct
65	Correct	63 ms	3976 KB	Output is correct
66	Correct	62 ms	3732 KB	Output is correct
67	Correct	60 ms	3852 KB	Output is correct
68	Correct	50 ms	3604 KB	Output is correct
69	Correct	53 ms	4140 KB	Output is correct
70	Correct	45 ms	3600 KB	Output is correct
71	Correct	33 ms	3988 KB	Output is correct
72	Correct	32 ms	3988 KB	Output is correct
73	Correct	59 ms	4240 KB	Output is correct

답안 #292589

Compilation message

Subtask #1 4.0 / 4.0

Subtask #2 21.0 / 21.0

Subtask #3 10.0 / 10.0

Subtask #4 65.0 / 65.0

Subtask #1
4.0 / 4.0

Subtask #2
21.0 / 21.0

Subtask #3
10.0 / 10.0

Subtask #4
65.0 / 65.0