Submission #789143

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
789143	2023-07-21T06:20:57 Z	박상훈(#10042)	Chorus (JOI23_chorus)	C++17	40 / 100	7000 ms	4308 KB

chorus

#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
constexpr ll INF = 4e18;
char s[2002000];
int a[1001000], b[1001000], mp[2002000], nxt[2002000];
ll cost[505][505], dp[505][505];

int main(){
	int n, k;
	scanf("%d %d", &n, &k);

	scanf("%s", s+1);
	int ptA = 1, ptB = 1;
	for (int i=1;i<=n*2;i++){
		if (s[i]=='A'){
			mp[i] = ptA;
			a[ptA++] = i;
		} 
		else{
			mp[i] = ptB;
			b[ptB++] = i;
		}
	}

	for (int i=n*2;i;i--){
		if (s[i]=='A') nxt[i] = --ptA;
		else nxt[i] = ptA;
	}

	for (int i=1;i<=n;i++){
		for (int j=i;j<=n;j++){
			for (int k=i;k<=j;k++){
				cost[i][j] += max(j-nxt[b[k]]+1, 0);
			}
		}
	}

	// is cost monge?
	for (int i=1;i<=n-1;i++){
		for (int j=i+1;j<=n-1;j++){
			assert(cost[i][j] + cost[i+1][j+1] <= cost[i][j+1] + cost[i+1][j]);
		}
	}

	for (int i=0;i<=n;i++){
		fill(dp[i], dp[i]+k+1, INF);
	}
	dp[0][0] = 0;

	for (int i=1;i<=n;i++){
		for (int j=1;j<=k;j++){
			for (int p=0;p<i;p++) dp[i][j] = min(dp[i][j], dp[p][j-1] + cost[p+1][i]);
		}
	}

	printf("%lld\n", dp[n][k]);
}

Compilation message

chorus.cpp: In function 'int main()':
chorus.cpp:12:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |  scanf("%d %d", &n, &k);
      |  ~~~~~^~~~~~~~~~~~~~~~~
chorus.cpp:14:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |  scanf("%s", s+1);
      |  ~~~~~^~~~~~~~~~~

Subtask #1
16.0 / 16.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	0 ms	340 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	0 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	0 ms	340 KB	Output is correct
10	Correct	1 ms	340 KB	Output is correct
11	Correct	0 ms	340 KB	Output is correct
12	Correct	0 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	0 ms	340 KB	Output is correct

Subtask #2
24.0 / 24.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	0 ms	340 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	0 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	0 ms	340 KB	Output is correct
10	Correct	1 ms	340 KB	Output is correct
11	Correct	0 ms	340 KB	Output is correct
12	Correct	0 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	0 ms	340 KB	Output is correct
17	Correct	3 ms	1748 KB	Output is correct
18	Correct	34 ms	4304 KB	Output is correct
19	Correct	63 ms	4260 KB	Output is correct
20	Correct	21 ms	4300 KB	Output is correct
21	Correct	21 ms	4200 KB	Output is correct
22	Correct	102 ms	4188 KB	Output is correct
23	Correct	105 ms	4292 KB	Output is correct
24	Correct	23 ms	4192 KB	Output is correct
25	Correct	100 ms	4308 KB	Output is correct
26	Correct	98 ms	4292 KB	Output is correct
27	Correct	45 ms	4212 KB	Output is correct
28	Correct	46 ms	4180 KB	Output is correct

Subtask #3
0 / 21.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	0 ms	340 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	0 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	0 ms	340 KB	Output is correct
10	Correct	1 ms	340 KB	Output is correct
11	Correct	0 ms	340 KB	Output is correct
12	Correct	0 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	0 ms	340 KB	Output is correct
17	Correct	3 ms	1748 KB	Output is correct
18	Correct	34 ms	4304 KB	Output is correct
19	Correct	63 ms	4260 KB	Output is correct
20	Correct	21 ms	4300 KB	Output is correct
21	Correct	21 ms	4200 KB	Output is correct
22	Correct	102 ms	4188 KB	Output is correct
23	Correct	105 ms	4292 KB	Output is correct
24	Correct	23 ms	4192 KB	Output is correct
25	Correct	100 ms	4308 KB	Output is correct
26	Correct	98 ms	4292 KB	Output is correct
27	Correct	45 ms	4212 KB	Output is correct
28	Correct	46 ms	4180 KB	Output is correct
29	Execution timed out	7029 ms	3648 KB	Time limit exceeded
30	Halted	0 ms	0 KB	-

Subtask #4
0 / 26.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	0 ms	340 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	0 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	0 ms	340 KB	Output is correct
10	Correct	1 ms	340 KB	Output is correct
11	Correct	0 ms	340 KB	Output is correct
12	Correct	0 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	0 ms	340 KB	Output is correct
17	Correct	3 ms	1748 KB	Output is correct
18	Correct	34 ms	4304 KB	Output is correct
19	Correct	63 ms	4260 KB	Output is correct
20	Correct	21 ms	4300 KB	Output is correct
21	Correct	21 ms	4200 KB	Output is correct
22	Correct	102 ms	4188 KB	Output is correct
23	Correct	105 ms	4292 KB	Output is correct
24	Correct	23 ms	4192 KB	Output is correct
25	Correct	100 ms	4308 KB	Output is correct
26	Correct	98 ms	4292 KB	Output is correct
27	Correct	45 ms	4212 KB	Output is correct
28	Correct	46 ms	4180 KB	Output is correct
29	Execution timed out	7029 ms	3648 KB	Time limit exceeded
30	Halted	0 ms	0 KB	-

Subtask #5
0 / 13.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	0 ms	340 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	0 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	0 ms	340 KB	Output is correct
10	Correct	1 ms	340 KB	Output is correct
11	Correct	0 ms	340 KB	Output is correct
12	Correct	0 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	0 ms	340 KB	Output is correct
17	Correct	3 ms	1748 KB	Output is correct
18	Correct	34 ms	4304 KB	Output is correct
19	Correct	63 ms	4260 KB	Output is correct
20	Correct	21 ms	4300 KB	Output is correct
21	Correct	21 ms	4200 KB	Output is correct
22	Correct	102 ms	4188 KB	Output is correct
23	Correct	105 ms	4292 KB	Output is correct
24	Correct	23 ms	4192 KB	Output is correct
25	Correct	100 ms	4308 KB	Output is correct
26	Correct	98 ms	4292 KB	Output is correct
27	Correct	45 ms	4212 KB	Output is correct
28	Correct	46 ms	4180 KB	Output is correct
29	Execution timed out	7029 ms	3648 KB	Time limit exceeded
30	Halted	0 ms	0 KB	-

Submission #789143

Compilation message

Subtask #1 16.0 / 16.0

Subtask #2 24.0 / 24.0

Subtask #3 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
0 / 21.0

Subtask #4
0 / 26.0

Subtask #5
0 / 13.0