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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#395345#8554. Bot Friendsucup-team052#WA 56ms4076kbC++231.1kb2024-04-21 13:30:402024-04-21 13:30:42

Judging History

你现在查看的是最新测评结果

  • [2024-04-21 13:30:42]
  • 评测
  • 测评结果:WA
  • 用时:56ms
  • 内存:4076kb
  • [2024-04-21 13:30:40]
  • 提交

answer

#include<bits/stdc++.h>
#define rep(i,a,b) for(int i=(a);i<=(b);++i)
#define per(i,a,b) for(int i=(a);i>=(b);--i)
#define SZ(x) ((int)(x).size())
#define D(...) fprintf(stderr,__VA_ARGS__)
using namespace std;
using LL=long long;
#define N 5005
int f[N],ok[N][N],ok1[N][N],ok2[N][N];
char s[N];
int n;
void work()
{
	scanf("%s",s+1); n=strlen(s+1);
	for(int i=1;i<=n;i++)
	{
		ok1[i][i]=s[i]!='>',ok2[i][i]=s[i]!='<';
		for(int j=i+1;j<=n;j++) ok1[i][j]=ok1[i][j-1]+(s[j]!='>'),ok2[i][j]=ok2[i][j-1]+(s[j]!='<');
	}
	auto get=[&](int l,int r,int mid)
	{
		int w1=ok2[l][mid],w2=ok1[mid+1][r];
		if(w1>w2) swap(w1,w2);
		w2=min(w1+1,w2);
		return w1+w2-1;
	};
	for(int i=1;i<=n;i++)
	{
		ok[i][i]=0; int pos=i;
		for(int j=i+1;j<=n;j++)
		{
			while(pos+1<j&&get(i,j,pos)<=get(i,j,pos+1)) pos++;
			ok[i][j]=get(i,j,pos);
		}
	}
	for(int i=1;i<=n;i++) f[i]=0;
	f[0]=0;
	for(int i=0;i<n;i++)
	{
		for(int j=i+1;j<=n;j++) f[j]=max(f[j],f[i]+ok[i+1][j]);
	}
	printf("%d\n",f[n]);
}
signed main(){
#ifdef xay5421
	freopen("a.in","r",stdin);
#endif
	int T; cin>>T; while(T--) work();
	return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 4040kb

input:

10
?>?
>?<
??<?
?><?<
??????
>?<?<>?<?<
?><???><><
??>>><><??
<>>?>>?>?>
<?<>>??<?>

output:

2
2
3
4
5
8
7
8
5
6

result:

ok 10 numbers

Test #2:

score: -100
Wrong Answer
time: 56ms
memory: 4076kb

input:

100000
>?<?<>?<?<
?><???><><
??>>><><??
<>>?>>?>?>
<?<>>??<?>
>><>><<<<<
>?>?>?<<>>
?><?<<?<><
???><>?>?>
<??>?<<><?
??>><?<>>>
<><><?<>>?
?>>?>???><
?<?><?<<>?
>>><?<??><
><><<>?>?<
>?><>><<<?
>??>?><?<>
?????<><?>
<><<?<<>?<
><?>>?>?>?
?><><<<>>?
?<>?<>?<<<
<><<<<<>>>
?>?>?><<>>
<>?<>><>?<
<<<?<>>...

output:

8
7
8
5
6
8
6
7
6
7
6
6
8
7
8
7
8
7
7
6
6
7
7
2
6
6
3
9
6
5
5
7
5
8
7
6
8
7
7
6
6
7
4
2
7
6
8
7
8
6
6
5
7
8
8
8
8
7
5
6
7
7
6
8
7
6
8
6
7
8
7
7
6
8
5
7
6
6
5
5
7
7
6
4
8
6
6
7
5
7
6
7
7
8
3
8
8
7
8
7
7
4
8
8
7
5
8
7
7
8
8
7
5
7
7
5
7
6
5
8
8
7
7
8
6
7
8
6
6
8
7
8
7
6
6
5
7
8
6
8
6
7
5
7
4
6
6
7
7
7
...

result:

wrong answer 30th numbers differ - expected: '6', found: '5'