Submission #545765

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
545765	2022-04-05T11:52:27 Z	Koosha_mv	Monochrome Points (JOI20_monochrome)	C++14	100 / 100	378 ms	7428 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; }

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

#	Verdict	Execution time	Memory	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	2 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	1832 KB	Output is correct
9	Correct	1 ms	1876 KB	Output is correct
10	Correct	2 ms	1876 KB	Output is correct
11	Correct	2 ms	1876 KB	Output is correct
12	Correct	2 ms	1876 KB	Output is correct
13	Correct	1 ms	1876 KB	Output is correct

Subtask #2
21.0 / 21.0

#	Verdict	Execution time	Memory	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	2 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	1832 KB	Output is correct
9	Correct	1 ms	1876 KB	Output is correct
10	Correct	2 ms	1876 KB	Output is correct
11	Correct	2 ms	1876 KB	Output is correct
12	Correct	2 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	1892 KB	Output is correct
22	Correct	2 ms	1876 KB	Output is correct
23	Correct	2 ms	1816 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	2 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	3 ms	1876 KB	Output is correct
33	Correct	3 ms	1876 KB	Output is correct

Subtask #3
10.0 / 10.0

#	Verdict	Execution time	Memory	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	2 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	1832 KB	Output is correct
9	Correct	1 ms	1876 KB	Output is correct
10	Correct	2 ms	1876 KB	Output is correct
11	Correct	2 ms	1876 KB	Output is correct
12	Correct	2 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	1892 KB	Output is correct
22	Correct	2 ms	1876 KB	Output is correct
23	Correct	2 ms	1816 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	2 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	3 ms	1876 KB	Output is correct
33	Correct	3 ms	1876 KB	Output is correct
34	Correct	5 ms	1876 KB	Output is correct
35	Correct	4 ms	1876 KB	Output is correct
36	Correct	4 ms	1876 KB	Output is correct
37	Correct	6 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	1964 KB	Output is correct
41	Correct	4 ms	1876 KB	Output is correct
42	Correct	5 ms	1876 KB	Output is correct
43	Correct	4 ms	1892 KB	Output is correct
44	Correct	4 ms	1876 KB	Output is correct
45	Correct	3 ms	1876 KB	Output is correct
46	Correct	4 ms	1876 KB	Output is correct
47	Correct	5 ms	1876 KB	Output is correct
48	Correct	3 ms	1876 KB	Output is correct
49	Correct	3 ms	1876 KB	Output is correct
50	Correct	4 ms	1876 KB	Output is correct
51	Correct	3 ms	1876 KB	Output is correct
52	Correct	4 ms	1876 KB	Output is correct

Subtask #4
65.0 / 65.0

#	Verdict	Execution time	Memory	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	2 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	1832 KB	Output is correct
9	Correct	1 ms	1876 KB	Output is correct
10	Correct	2 ms	1876 KB	Output is correct
11	Correct	2 ms	1876 KB	Output is correct
12	Correct	2 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	1892 KB	Output is correct
22	Correct	2 ms	1876 KB	Output is correct
23	Correct	2 ms	1816 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	2 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	3 ms	1876 KB	Output is correct
33	Correct	3 ms	1876 KB	Output is correct
34	Correct	5 ms	1876 KB	Output is correct
35	Correct	4 ms	1876 KB	Output is correct
36	Correct	4 ms	1876 KB	Output is correct
37	Correct	6 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	1964 KB	Output is correct
41	Correct	4 ms	1876 KB	Output is correct
42	Correct	5 ms	1876 KB	Output is correct
43	Correct	4 ms	1892 KB	Output is correct
44	Correct	4 ms	1876 KB	Output is correct
45	Correct	3 ms	1876 KB	Output is correct
46	Correct	4 ms	1876 KB	Output is correct
47	Correct	5 ms	1876 KB	Output is correct
48	Correct	3 ms	1876 KB	Output is correct
49	Correct	3 ms	1876 KB	Output is correct
50	Correct	4 ms	1876 KB	Output is correct
51	Correct	3 ms	1876 KB	Output is correct
52	Correct	4 ms	1876 KB	Output is correct
53	Correct	378 ms	7388 KB	Output is correct
54	Correct	349 ms	7128 KB	Output is correct
55	Correct	367 ms	7132 KB	Output is correct
56	Correct	320 ms	7132 KB	Output is correct
57	Correct	297 ms	7000 KB	Output is correct
58	Correct	357 ms	7108 KB	Output is correct
59	Correct	310 ms	6832 KB	Output is correct
60	Correct	308 ms	7172 KB	Output is correct
61	Correct	339 ms	7212 KB	Output is correct
62	Correct	317 ms	7260 KB	Output is correct
63	Correct	314 ms	7104 KB	Output is correct
64	Correct	290 ms	6884 KB	Output is correct
65	Correct	304 ms	6876 KB	Output is correct
66	Correct	302 ms	6848 KB	Output is correct
67	Correct	302 ms	6756 KB	Output is correct
68	Correct	295 ms	6640 KB	Output is correct
69	Correct	294 ms	7128 KB	Output is correct
70	Correct	287 ms	6660 KB	Output is correct
71	Correct	327 ms	7120 KB	Output is correct
72	Correct	296 ms	7140 KB	Output is correct
73	Correct	331 ms	7428 KB	Output is correct

Submission #545765

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