답안 #545762

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
545762	2022-04-05T11:48:29 Z	Koosha_mv	Monochrome Points (JOI20_monochrome)	C++14	100 / 100	371 ms	7772 KB

monochrome

#include <bits/stdc++.h>
using namespace std;
#define dbgv(v) cout<<#v<<" = "; f(i,0,v.size()) cout<<v[i]<<" "; cout<<endl
#define dbga(a,x,y) cout<<#a<<" = "; f(i,x,y) cout<<a[i]<<" "; cout<<endl
#define erorp(x) cout<<#x<<"={"<<(x.F)<<" , "<<x.S<<"}"<<endl
#define eror(x) cout<<#x<<'='<<(x)<<endl
#define f_(i,a,b) for(int i=a;i>=b;i--)
#define f(i,a,b) for(int i=a;i<b;i++)
#define nb(x) __builtin_popcount(x)
#define all(v) v.begin(),v.end()
#define bit(n,k) (((n)>>(k))&1)
#define Add(x,y) x=(x+y)%mod
#define maxm(a,b) a=max(a,b)
#define minm(a,b) a=min(a,b)
#define lst(x) x[x.size()-1]
#define sz(x) int(x.size())
#define mp make_pair
#define ll long long
#define pb push_back
#define S second
#define F first

const int N=4e5+99;

int n,a[N],L[N],R[N],fenwik[N];
string s;
vector<int> vec0,vec1;

void add(int x, int val){ for (x++;x>0;x-=x&-x) fenwik[x]+=val; }
int get(int x) { int res=0; for(x++;x<N;x+=x&-x) res+=fenwik[x]; return res; }

bool check(int lx,int rx,int ly,int ry){
	if(lx>rx) swap(lx,rx);
	if(ly>ry) swap(ly,ry);
	if(lx>ly) swap(lx,ly),swap(rx,ry);
	return ly<rx && rx<ry;
}
ll calc(int shift){
	f(i,0,N) fenwik[i]=0;
	ll res=0;
	f(i,0,n){
		L[i]=min(vec0[i],vec1[(i+shift)%n]);
		R[i]=max(vec0[i],vec1[(i+shift)%n]);
		a[L[i]]=i;
		a[R[i]]=i;
	}
	f(i,0,2*n){
		if(L[a[i]]==i){
			add(i,1);
		}
		else{
			add(L[a[i]],-1);
			res+=get(L[a[i]]);
		}
	}
	return res;
}

int32_t main(){
	ios:: sync_with_stdio(0), cin.tie(0), cout.tie(0);
	cin>>n>>s;
	f(i,0,2*n) if(s[i]==s[0]) vec0.pb(i); else vec1.pb(i);
	int l=-1,r=n-1;
	while(l+1<r){
		int mid=(l+r)>>1;
		if(calc(mid)<calc(mid+1)){
			l=mid;
		}
		else{
			r=mid;
		}
	}
	cout<<calc(r);
}

Subtask #1
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	1876 KB	Output is correct
2	Correct	1 ms	1876 KB	Output is correct
3	Correct	1 ms	1876 KB	Output is correct
4	Correct	1 ms	1876 KB	Output is correct
5	Correct	1 ms	1876 KB	Output is correct
6	Correct	1 ms	1876 KB	Output is correct
7	Correct	1 ms	1876 KB	Output is correct
8	Correct	2 ms	1876 KB	Output is correct
9	Correct	1 ms	1876 KB	Output is correct
10	Correct	1 ms	1876 KB	Output is correct
11	Correct	1 ms	1876 KB	Output is correct
12	Correct	1 ms	1876 KB	Output is correct
13	Correct	1 ms	1876 KB	Output is correct

Subtask #2
21.0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	1876 KB	Output is correct
2	Correct	1 ms	1876 KB	Output is correct
3	Correct	1 ms	1876 KB	Output is correct
4	Correct	1 ms	1876 KB	Output is correct
5	Correct	1 ms	1876 KB	Output is correct
6	Correct	1 ms	1876 KB	Output is correct
7	Correct	1 ms	1876 KB	Output is correct
8	Correct	2 ms	1876 KB	Output is correct
9	Correct	1 ms	1876 KB	Output is correct
10	Correct	1 ms	1876 KB	Output is correct
11	Correct	1 ms	1876 KB	Output is correct
12	Correct	1 ms	1876 KB	Output is correct
13	Correct	1 ms	1876 KB	Output is correct
14	Correct	2 ms	1876 KB	Output is correct
15	Correct	2 ms	1876 KB	Output is correct
16	Correct	2 ms	1876 KB	Output is correct
17	Correct	2 ms	1876 KB	Output is correct
18	Correct	2 ms	1876 KB	Output is correct
19	Correct	2 ms	1876 KB	Output is correct
20	Correct	2 ms	1876 KB	Output is correct
21	Correct	2 ms	1876 KB	Output is correct
22	Correct	2 ms	1876 KB	Output is correct
23	Correct	2 ms	1876 KB	Output is correct
24	Correct	2 ms	1876 KB	Output is correct
25	Correct	2 ms	1876 KB	Output is correct
26	Correct	2 ms	1876 KB	Output is correct
27	Correct	2 ms	1876 KB	Output is correct
28	Correct	3 ms	1876 KB	Output is correct
29	Correct	2 ms	1876 KB	Output is correct
30	Correct	2 ms	1876 KB	Output is correct
31	Correct	2 ms	1876 KB	Output is correct
32	Correct	2 ms	1836 KB	Output is correct
33	Correct	2 ms	1876 KB	Output is correct

Subtask #3
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	1876 KB	Output is correct
2	Correct	1 ms	1876 KB	Output is correct
3	Correct	1 ms	1876 KB	Output is correct
4	Correct	1 ms	1876 KB	Output is correct
5	Correct	1 ms	1876 KB	Output is correct
6	Correct	1 ms	1876 KB	Output is correct
7	Correct	1 ms	1876 KB	Output is correct
8	Correct	2 ms	1876 KB	Output is correct
9	Correct	1 ms	1876 KB	Output is correct
10	Correct	1 ms	1876 KB	Output is correct
11	Correct	1 ms	1876 KB	Output is correct
12	Correct	1 ms	1876 KB	Output is correct
13	Correct	1 ms	1876 KB	Output is correct
14	Correct	2 ms	1876 KB	Output is correct
15	Correct	2 ms	1876 KB	Output is correct
16	Correct	2 ms	1876 KB	Output is correct
17	Correct	2 ms	1876 KB	Output is correct
18	Correct	2 ms	1876 KB	Output is correct
19	Correct	2 ms	1876 KB	Output is correct
20	Correct	2 ms	1876 KB	Output is correct
21	Correct	2 ms	1876 KB	Output is correct
22	Correct	2 ms	1876 KB	Output is correct
23	Correct	2 ms	1876 KB	Output is correct
24	Correct	2 ms	1876 KB	Output is correct
25	Correct	2 ms	1876 KB	Output is correct
26	Correct	2 ms	1876 KB	Output is correct
27	Correct	2 ms	1876 KB	Output is correct
28	Correct	3 ms	1876 KB	Output is correct
29	Correct	2 ms	1876 KB	Output is correct
30	Correct	2 ms	1876 KB	Output is correct
31	Correct	2 ms	1876 KB	Output is correct
32	Correct	2 ms	1836 KB	Output is correct
33	Correct	2 ms	1876 KB	Output is correct
34	Correct	4 ms	1876 KB	Output is correct
35	Correct	5 ms	1876 KB	Output is correct
36	Correct	4 ms	1876 KB	Output is correct
37	Correct	4 ms	1876 KB	Output is correct
38	Correct	4 ms	1876 KB	Output is correct
39	Correct	4 ms	1876 KB	Output is correct
40	Correct	3 ms	1876 KB	Output is correct
41	Correct	3 ms	1876 KB	Output is correct
42	Correct	5 ms	1876 KB	Output is correct
43	Correct	4 ms	1888 KB	Output is correct
44	Correct	4 ms	1876 KB	Output is correct
45	Correct	4 ms	1876 KB	Output is correct
46	Correct	5 ms	1964 KB	Output is correct
47	Correct	4 ms	1876 KB	Output is correct
48	Correct	4 ms	1972 KB	Output is correct
49	Correct	4 ms	1876 KB	Output is correct
50	Correct	4 ms	1876 KB	Output is correct
51	Correct	4 ms	1964 KB	Output is correct
52	Correct	4 ms	1876 KB	Output is correct

Subtask #4
65.0 / 65.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	1876 KB	Output is correct
2	Correct	1 ms	1876 KB	Output is correct
3	Correct	1 ms	1876 KB	Output is correct
4	Correct	1 ms	1876 KB	Output is correct
5	Correct	1 ms	1876 KB	Output is correct
6	Correct	1 ms	1876 KB	Output is correct
7	Correct	1 ms	1876 KB	Output is correct
8	Correct	2 ms	1876 KB	Output is correct
9	Correct	1 ms	1876 KB	Output is correct
10	Correct	1 ms	1876 KB	Output is correct
11	Correct	1 ms	1876 KB	Output is correct
12	Correct	1 ms	1876 KB	Output is correct
13	Correct	1 ms	1876 KB	Output is correct
14	Correct	2 ms	1876 KB	Output is correct
15	Correct	2 ms	1876 KB	Output is correct
16	Correct	2 ms	1876 KB	Output is correct
17	Correct	2 ms	1876 KB	Output is correct
18	Correct	2 ms	1876 KB	Output is correct
19	Correct	2 ms	1876 KB	Output is correct
20	Correct	2 ms	1876 KB	Output is correct
21	Correct	2 ms	1876 KB	Output is correct
22	Correct	2 ms	1876 KB	Output is correct
23	Correct	2 ms	1876 KB	Output is correct
24	Correct	2 ms	1876 KB	Output is correct
25	Correct	2 ms	1876 KB	Output is correct
26	Correct	2 ms	1876 KB	Output is correct
27	Correct	2 ms	1876 KB	Output is correct
28	Correct	3 ms	1876 KB	Output is correct
29	Correct	2 ms	1876 KB	Output is correct
30	Correct	2 ms	1876 KB	Output is correct
31	Correct	2 ms	1876 KB	Output is correct
32	Correct	2 ms	1836 KB	Output is correct
33	Correct	2 ms	1876 KB	Output is correct
34	Correct	4 ms	1876 KB	Output is correct
35	Correct	5 ms	1876 KB	Output is correct
36	Correct	4 ms	1876 KB	Output is correct
37	Correct	4 ms	1876 KB	Output is correct
38	Correct	4 ms	1876 KB	Output is correct
39	Correct	4 ms	1876 KB	Output is correct
40	Correct	3 ms	1876 KB	Output is correct
41	Correct	3 ms	1876 KB	Output is correct
42	Correct	5 ms	1876 KB	Output is correct
43	Correct	4 ms	1888 KB	Output is correct
44	Correct	4 ms	1876 KB	Output is correct
45	Correct	4 ms	1876 KB	Output is correct
46	Correct	5 ms	1964 KB	Output is correct
47	Correct	4 ms	1876 KB	Output is correct
48	Correct	4 ms	1972 KB	Output is correct
49	Correct	4 ms	1876 KB	Output is correct
50	Correct	4 ms	1876 KB	Output is correct
51	Correct	4 ms	1964 KB	Output is correct
52	Correct	4 ms	1876 KB	Output is correct
53	Correct	371 ms	7388 KB	Output is correct
54	Correct	367 ms	7520 KB	Output is correct
55	Correct	347 ms	7516 KB	Output is correct
56	Correct	360 ms	7512 KB	Output is correct
57	Correct	338 ms	7492 KB	Output is correct
58	Correct	334 ms	7520 KB	Output is correct
59	Correct	323 ms	7212 KB	Output is correct
60	Correct	315 ms	7516 KB	Output is correct
61	Correct	314 ms	7596 KB	Output is correct
62	Correct	339 ms	7644 KB	Output is correct
63	Correct	355 ms	7516 KB	Output is correct
64	Correct	326 ms	7308 KB	Output is correct
65	Correct	333 ms	7316 KB	Output is correct
66	Correct	307 ms	7220 KB	Output is correct
67	Correct	330 ms	7244 KB	Output is correct
68	Correct	336 ms	6992 KB	Output is correct
69	Correct	323 ms	7464 KB	Output is correct
70	Correct	302 ms	7032 KB	Output is correct
71	Correct	324 ms	7520 KB	Output is correct
72	Correct	331 ms	7524 KB	Output is correct
73	Correct	366 ms	7772 KB	Output is correct

답안 #545762

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