Submission #834721

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
834721	2023-08-22T17:43:50 Z	Antekb	Chorus (JOI23_chorus)	C++17	61 / 100	7000 ms	2644 KB

chorus

#include<bits/stdc++.h>
#define st first
#define nd second
#define all(x) (x).begin(), (x).end()
#define pb push_back
#define eb emplace_back
#define pp pop_back
#define mp make_pair
using namespace std;
using pii = pair<int, int>;
using ll = long long;
using vi = vector<int>;
using vii = vector<pii>;
using ld = long double;
void debug(){cerr<<"\n";}
template<typename H, typename... T>
void debug(H h, T... t){
	cerr<<h;
	if(sizeof...(t)){
		cerr<<", ";
	}
	debug(t...);
}
#define deb(x...) cerr<<#x<<" = ";debug(x);

mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());

int main(){
	int n, k;
	string s;
	cin>>n>>k>>s;
	vi V(n+1);
	int a=0, b=1;
	for(char c:s){
		if(c=='A'){
			a++;
		}
		else{
			V[b]=a;
			b++;
		}
	}
	/*vector<vector<ll> > dp2(n+1, vector<ll>(k+1, 1e18));
	dp2[0][0]=0;
	for(int kk=1; kk<=k; kk++){
		for(int i=kk; i<=n; i++){
			ll c=0;
			for(int j=i-1; j>=0; j--){
				c+=max(0, i-V[j+1]);
				dp2[i][kk]=min(dp2[i][kk], dp2[j][kk-1]+c);
			}
		}
	}
	for(int kk=1; kk<=k; kk++){
		cout<<dp2[n][kk]<<" ";
	}*/
	vector<ld> dp(n+1), ile(n+1);
	ld l=-2e7, r=2e7;
	pair<int, ll> L,R;
	for(int ii=0; ii<40; ii++){
		ld m=(l+r)/2;
		dp[0]=0;
		ile[0]=0;
		for(int i=1; i<=n; i++){
			ll c=0;
			dp[i]=1e18;
			for(int j=i-1; j>=0; j--){
				c+=max(0, i-V[j+1]);
				if(dp[i]>dp[j]+c+m){
					dp[i]=dp[j]+c+m;
					ile[i]=ile[j]+1;
				}
			}
		}
		if(ile[n]>k){
			l=m;
			R=mp(ile[n], ll(dp[n]-k*m+0.5));
		}
		else if(ile[n]<k){
			r=m;
			L=mp(ile[n], ll(dp[n]-k*m+0.5));
		}
		else{
			cout<<ll(dp[n]-k*m+0.5);
			return 0;
		}
	}
	assert((R.nd*(k-L.st)+L.nd*(R.st-k))%(R.st-L.st)==0);
	ll ans=(R.nd*(k-L.st)+L.nd*(R.st-k))/(R.st-L.st);
	cout<<ans;
	//assert(false);
}

Subtask #1
16.0 / 16.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct

Subtask #2
24.0 / 24.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	3 ms	212 KB	Output is correct
18	Correct	21 ms	212 KB	Output is correct
19	Correct	22 ms	316 KB	Output is correct
20	Correct	2 ms	212 KB	Output is correct
21	Correct	7 ms	212 KB	Output is correct
22	Correct	22 ms	320 KB	Output is correct
23	Correct	1 ms	212 KB	Output is correct
24	Correct	10 ms	316 KB	Output is correct
25	Correct	1 ms	212 KB	Output is correct
26	Correct	21 ms	316 KB	Output is correct
27	Correct	14 ms	212 KB	Output is correct
28	Correct	14 ms	212 KB	Output is correct

Subtask #3
21.0 / 21.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	3 ms	212 KB	Output is correct
18	Correct	21 ms	212 KB	Output is correct
19	Correct	22 ms	316 KB	Output is correct
20	Correct	2 ms	212 KB	Output is correct
21	Correct	7 ms	212 KB	Output is correct
22	Correct	22 ms	320 KB	Output is correct
23	Correct	1 ms	212 KB	Output is correct
24	Correct	10 ms	316 KB	Output is correct
25	Correct	1 ms	212 KB	Output is correct
26	Correct	21 ms	316 KB	Output is correct
27	Correct	14 ms	212 KB	Output is correct
28	Correct	14 ms	212 KB	Output is correct
29	Correct	1841 ms	480 KB	Output is correct
30	Correct	1867 ms	480 KB	Output is correct
31	Correct	1865 ms	480 KB	Output is correct
32	Correct	110 ms	468 KB	Output is correct
33	Correct	183 ms	476 KB	Output is correct
34	Correct	1862 ms	484 KB	Output is correct
35	Correct	43 ms	468 KB	Output is correct
36	Correct	573 ms	476 KB	Output is correct
37	Correct	1865 ms	468 KB	Output is correct
38	Correct	1852 ms	484 KB	Output is correct
39	Correct	1867 ms	476 KB	Output is correct
40	Correct	1179 ms	476 KB	Output is correct
41	Correct	1181 ms	476 KB	Output is correct
42	Correct	1862 ms	476 KB	Output is correct

Subtask #4
0 / 26.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	3 ms	212 KB	Output is correct
18	Correct	21 ms	212 KB	Output is correct
19	Correct	22 ms	316 KB	Output is correct
20	Correct	2 ms	212 KB	Output is correct
21	Correct	7 ms	212 KB	Output is correct
22	Correct	22 ms	320 KB	Output is correct
23	Correct	1 ms	212 KB	Output is correct
24	Correct	10 ms	316 KB	Output is correct
25	Correct	1 ms	212 KB	Output is correct
26	Correct	21 ms	316 KB	Output is correct
27	Correct	14 ms	212 KB	Output is correct
28	Correct	14 ms	212 KB	Output is correct
29	Correct	1841 ms	480 KB	Output is correct
30	Correct	1867 ms	480 KB	Output is correct
31	Correct	1865 ms	480 KB	Output is correct
32	Correct	110 ms	468 KB	Output is correct
33	Correct	183 ms	476 KB	Output is correct
34	Correct	1862 ms	484 KB	Output is correct
35	Correct	43 ms	468 KB	Output is correct
36	Correct	573 ms	476 KB	Output is correct
37	Correct	1865 ms	468 KB	Output is correct
38	Correct	1852 ms	484 KB	Output is correct
39	Correct	1867 ms	476 KB	Output is correct
40	Correct	1179 ms	476 KB	Output is correct
41	Correct	1181 ms	476 KB	Output is correct
42	Correct	1862 ms	476 KB	Output is correct
43	Execution timed out	7033 ms	2644 KB	Time limit exceeded
44	Halted	0 ms	0 KB	-

Subtask #5
0 / 13.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	3 ms	212 KB	Output is correct
18	Correct	21 ms	212 KB	Output is correct
19	Correct	22 ms	316 KB	Output is correct
20	Correct	2 ms	212 KB	Output is correct
21	Correct	7 ms	212 KB	Output is correct
22	Correct	22 ms	320 KB	Output is correct
23	Correct	1 ms	212 KB	Output is correct
24	Correct	10 ms	316 KB	Output is correct
25	Correct	1 ms	212 KB	Output is correct
26	Correct	21 ms	316 KB	Output is correct
27	Correct	14 ms	212 KB	Output is correct
28	Correct	14 ms	212 KB	Output is correct
29	Correct	1841 ms	480 KB	Output is correct
30	Correct	1867 ms	480 KB	Output is correct
31	Correct	1865 ms	480 KB	Output is correct
32	Correct	110 ms	468 KB	Output is correct
33	Correct	183 ms	476 KB	Output is correct
34	Correct	1862 ms	484 KB	Output is correct
35	Correct	43 ms	468 KB	Output is correct
36	Correct	573 ms	476 KB	Output is correct
37	Correct	1865 ms	468 KB	Output is correct
38	Correct	1852 ms	484 KB	Output is correct
39	Correct	1867 ms	476 KB	Output is correct
40	Correct	1179 ms	476 KB	Output is correct
41	Correct	1181 ms	476 KB	Output is correct
42	Correct	1862 ms	476 KB	Output is correct
43	Execution timed out	7033 ms	2644 KB	Time limit exceeded
44	Halted	0 ms	0 KB	-

Submission #834721

Compilation message

Subtask #1 16.0 / 16.0

Subtask #2 24.0 / 24.0

Subtask #3 21.0 / 21.0

Subtask #4 0 / 26.0

Subtask #5 0 / 13.0

Subtask #1
16.0 / 16.0

Subtask #2
24.0 / 24.0

Subtask #3
21.0 / 21.0

Subtask #4
0 / 26.0

Subtask #5
0 / 13.0