답안 #947365

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
947365	2024-03-16T03:15:52 Z	firewater	Chorus (JOI23_chorus)	C++14	61 / 100	7000 ms	11356 KB

chorus

#include<bits/stdc++.h>
#define ll long long
#define N 2024000
using namespace std;
ll n,k,x,now,l,r,a[N],sum[N],v[N],f[N],s[N];
char ss[N];
ll ask(ll k)
{
	for(ll i=1;i<=n;++i)
		f[i]=1000000000000ll,s[i]=0;
    f[0]=0,s[0]=0;
	for(ll i=1;i<=n;++i)
		for(ll j=0;j<i;++j)
            if(make_pair(f[j]+sum[i]-sum[v[j+1]]-j*(i-v[j+1])+k,s[j]+1)<make_pair(f[i],s[i])){
				f[i]=f[j]+sum[i]-sum[v[j+1]]-j*(i-v[j+1])+k;
				s[i]=s[j]+1;
			}
	return s[n];
}
signed main()
{
	scanf("%lld%lld%s",&n,&k,ss+1);
	x=now=0;
	for(ll i=1;i<=n*2;++i){
		if(ss[i]=='A'){
			a[++x]=now;
			sum[x]=sum[x-1]+a[x];
		}
		else now++,v[now]=max(now-1,x);
	}
	l=0;
	r=1000000000000ll;
	while(l<r){
		ll mid=l+r>>1;
		if(ask(mid)<=k)r=mid;
		else l=mid+1;
	}
    x=ask(l);
    printf("%lld\n",f[n]-l*k);
    return 0;
}

Compilation message

chorus.cpp: In function 'int main()':
chorus.cpp:34:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   34 |   ll mid=l+r>>1;
      |          ~^~
chorus.cpp:22:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |  scanf("%lld%lld%s",&n,&k,ss+1);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1

16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	8536 KB	Output is correct
2	Correct	1 ms	8540 KB	Output is correct
3	Correct	1 ms	8540 KB	Output is correct
4	Correct	1 ms	8540 KB	Output is correct
5	Correct	1 ms	8540 KB	Output is correct
6	Correct	1 ms	8540 KB	Output is correct
7	Correct	2 ms	8540 KB	Output is correct
8	Correct	2 ms	8540 KB	Output is correct
9	Correct	1 ms	8540 KB	Output is correct
10	Correct	1 ms	8540 KB	Output is correct
11	Correct	1 ms	8536 KB	Output is correct
12	Correct	1 ms	8540 KB	Output is correct
13	Correct	1 ms	8540 KB	Output is correct
14	Correct	1 ms	8540 KB	Output is correct
15	Correct	1 ms	8540 KB	Output is correct
16	Correct	1 ms	8540 KB	Output is correct

Subtask #2

24.0 / 24.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	8536 KB	Output is correct
2	Correct	1 ms	8540 KB	Output is correct
3	Correct	1 ms	8540 KB	Output is correct
4	Correct	1 ms	8540 KB	Output is correct
5	Correct	1 ms	8540 KB	Output is correct
6	Correct	1 ms	8540 KB	Output is correct
7	Correct	2 ms	8540 KB	Output is correct
8	Correct	2 ms	8540 KB	Output is correct
9	Correct	1 ms	8540 KB	Output is correct
10	Correct	1 ms	8540 KB	Output is correct
11	Correct	1 ms	8536 KB	Output is correct
12	Correct	1 ms	8540 KB	Output is correct
13	Correct	1 ms	8540 KB	Output is correct
14	Correct	1 ms	8540 KB	Output is correct
15	Correct	1 ms	8540 KB	Output is correct
16	Correct	1 ms	8540 KB	Output is correct
17	Correct	2 ms	8536 KB	Output is correct
18	Correct	8 ms	8540 KB	Output is correct
19	Correct	8 ms	8540 KB	Output is correct
20	Correct	8 ms	8660 KB	Output is correct
21	Correct	8 ms	8540 KB	Output is correct
22	Correct	8 ms	8540 KB	Output is correct
23	Correct	8 ms	8664 KB	Output is correct
24	Correct	8 ms	8540 KB	Output is correct
25	Correct	8 ms	8664 KB	Output is correct
26	Correct	8 ms	8536 KB	Output is correct
27	Correct	8 ms	8540 KB	Output is correct
28	Correct	11 ms	8652 KB	Output is correct

Subtask #3

21.0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	8536 KB	Output is correct
2	Correct	1 ms	8540 KB	Output is correct
3	Correct	1 ms	8540 KB	Output is correct
4	Correct	1 ms	8540 KB	Output is correct
5	Correct	1 ms	8540 KB	Output is correct
6	Correct	1 ms	8540 KB	Output is correct
7	Correct	2 ms	8540 KB	Output is correct
8	Correct	2 ms	8540 KB	Output is correct
9	Correct	1 ms	8540 KB	Output is correct
10	Correct	1 ms	8540 KB	Output is correct
11	Correct	1 ms	8536 KB	Output is correct
12	Correct	1 ms	8540 KB	Output is correct
13	Correct	1 ms	8540 KB	Output is correct
14	Correct	1 ms	8540 KB	Output is correct
15	Correct	1 ms	8540 KB	Output is correct
16	Correct	1 ms	8540 KB	Output is correct
17	Correct	2 ms	8536 KB	Output is correct
18	Correct	8 ms	8540 KB	Output is correct
19	Correct	8 ms	8540 KB	Output is correct
20	Correct	8 ms	8660 KB	Output is correct
21	Correct	8 ms	8540 KB	Output is correct
22	Correct	8 ms	8540 KB	Output is correct
23	Correct	8 ms	8664 KB	Output is correct
24	Correct	8 ms	8540 KB	Output is correct
25	Correct	8 ms	8664 KB	Output is correct
26	Correct	8 ms	8536 KB	Output is correct
27	Correct	8 ms	8540 KB	Output is correct
28	Correct	11 ms	8652 KB	Output is correct
29	Correct	627 ms	8688 KB	Output is correct
30	Correct	667 ms	8692 KB	Output is correct
31	Correct	663 ms	8540 KB	Output is correct
32	Correct	664 ms	8536 KB	Output is correct
33	Correct	653 ms	8688 KB	Output is correct
34	Correct	701 ms	8688 KB	Output is correct
35	Correct	659 ms	8692 KB	Output is correct
36	Correct	653 ms	8788 KB	Output is correct
37	Correct	670 ms	8788 KB	Output is correct
38	Correct	687 ms	8696 KB	Output is correct
39	Correct	704 ms	8692 KB	Output is correct
40	Correct	669 ms	8540 KB	Output is correct
41	Correct	666 ms	8692 KB	Output is correct
42	Correct	674 ms	8688 KB	Output is correct

Subtask #4

0 / 26.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	8536 KB	Output is correct
2	Correct	1 ms	8540 KB	Output is correct
3	Correct	1 ms	8540 KB	Output is correct
4	Correct	1 ms	8540 KB	Output is correct
5	Correct	1 ms	8540 KB	Output is correct
6	Correct	1 ms	8540 KB	Output is correct
7	Correct	2 ms	8540 KB	Output is correct
8	Correct	2 ms	8540 KB	Output is correct
9	Correct	1 ms	8540 KB	Output is correct
10	Correct	1 ms	8540 KB	Output is correct
11	Correct	1 ms	8536 KB	Output is correct
12	Correct	1 ms	8540 KB	Output is correct
13	Correct	1 ms	8540 KB	Output is correct
14	Correct	1 ms	8540 KB	Output is correct
15	Correct	1 ms	8540 KB	Output is correct
16	Correct	1 ms	8540 KB	Output is correct
17	Correct	2 ms	8536 KB	Output is correct
18	Correct	8 ms	8540 KB	Output is correct
19	Correct	8 ms	8540 KB	Output is correct
20	Correct	8 ms	8660 KB	Output is correct
21	Correct	8 ms	8540 KB	Output is correct
22	Correct	8 ms	8540 KB	Output is correct
23	Correct	8 ms	8664 KB	Output is correct
24	Correct	8 ms	8540 KB	Output is correct
25	Correct	8 ms	8664 KB	Output is correct
26	Correct	8 ms	8536 KB	Output is correct
27	Correct	8 ms	8540 KB	Output is correct
28	Correct	11 ms	8652 KB	Output is correct
29	Correct	627 ms	8688 KB	Output is correct
30	Correct	667 ms	8692 KB	Output is correct
31	Correct	663 ms	8540 KB	Output is correct
32	Correct	664 ms	8536 KB	Output is correct
33	Correct	653 ms	8688 KB	Output is correct
34	Correct	701 ms	8688 KB	Output is correct
35	Correct	659 ms	8692 KB	Output is correct
36	Correct	653 ms	8788 KB	Output is correct
37	Correct	670 ms	8788 KB	Output is correct
38	Correct	687 ms	8696 KB	Output is correct
39	Correct	704 ms	8692 KB	Output is correct
40	Correct	669 ms	8540 KB	Output is correct
41	Correct	666 ms	8692 KB	Output is correct
42	Correct	674 ms	8688 KB	Output is correct
43	Execution timed out	7058 ms	11356 KB	Time limit exceeded
44	Halted	0 ms	0 KB	-

Subtask #5

0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	8536 KB	Output is correct
2	Correct	1 ms	8540 KB	Output is correct
3	Correct	1 ms	8540 KB	Output is correct
4	Correct	1 ms	8540 KB	Output is correct
5	Correct	1 ms	8540 KB	Output is correct
6	Correct	1 ms	8540 KB	Output is correct
7	Correct	2 ms	8540 KB	Output is correct
8	Correct	2 ms	8540 KB	Output is correct
9	Correct	1 ms	8540 KB	Output is correct
10	Correct	1 ms	8540 KB	Output is correct
11	Correct	1 ms	8536 KB	Output is correct
12	Correct	1 ms	8540 KB	Output is correct
13	Correct	1 ms	8540 KB	Output is correct
14	Correct	1 ms	8540 KB	Output is correct
15	Correct	1 ms	8540 KB	Output is correct
16	Correct	1 ms	8540 KB	Output is correct
17	Correct	2 ms	8536 KB	Output is correct
18	Correct	8 ms	8540 KB	Output is correct
19	Correct	8 ms	8540 KB	Output is correct
20	Correct	8 ms	8660 KB	Output is correct
21	Correct	8 ms	8540 KB	Output is correct
22	Correct	8 ms	8540 KB	Output is correct
23	Correct	8 ms	8664 KB	Output is correct
24	Correct	8 ms	8540 KB	Output is correct
25	Correct	8 ms	8664 KB	Output is correct
26	Correct	8 ms	8536 KB	Output is correct
27	Correct	8 ms	8540 KB	Output is correct
28	Correct	11 ms	8652 KB	Output is correct
29	Correct	627 ms	8688 KB	Output is correct
30	Correct	667 ms	8692 KB	Output is correct
31	Correct	663 ms	8540 KB	Output is correct
32	Correct	664 ms	8536 KB	Output is correct
33	Correct	653 ms	8688 KB	Output is correct
34	Correct	701 ms	8688 KB	Output is correct
35	Correct	659 ms	8692 KB	Output is correct
36	Correct	653 ms	8788 KB	Output is correct
37	Correct	670 ms	8788 KB	Output is correct
38	Correct	687 ms	8696 KB	Output is correct
39	Correct	704 ms	8692 KB	Output is correct
40	Correct	669 ms	8540 KB	Output is correct
41	Correct	666 ms	8692 KB	Output is correct
42	Correct	674 ms	8688 KB	Output is correct
43	Execution timed out	7058 ms	11356 KB	Time limit exceeded
44	Halted	0 ms	0 KB	-