QOJ.ac

QOJ

ID题目提交者结果用时内存语言文件大小提交时间测评时间
#789843#8048. Roman MasterroyWA 28ms3664kbC++142.3kb2024-11-27 22:13:482024-11-27 22:13:51

Judging History

你现在查看的是最新测评结果

  • [2024-11-27 22:13:51]
  • 评测
  • 测评结果:WA
  • 用时:28ms
  • 内存:3664kb
  • [2024-11-27 22:13:48]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;

int T;

int n;
string s;

pair<int,int> pre[100050];
pair<int,int> dp[100050];
// num  highest

void dfs(int x,int v){
	if(x!=0){
		dfs(pre[x].first,pre[x].second);
	}
	cout<<v;
}

void Work(){
	n=s.size();
	s=' '+s;
	for(int i=0;i<=n;++i){
		pre[i]=make_pair(0x7f7f7f7f,0x7f7f7f7f);
		dp[i]=make_pair(0x7f7f7f7f,0x7f7f7f7f);
	}
	dp[0]=make_pair(0,0);
	if(s[1]=='I'){
		dp[1]=make_pair(1,1);
		pre[1]=make_pair(0,1);
	}
	if(s[1]=='V'){
		dp[1]=make_pair(1,5);
		pre[1]=make_pair(0,5);
	}
	for(int i=2;i<=n;++i){
		if(s[i]=='I'){
			if(dp[i]>make_pair(dp[i-1].first+1,dp[i-1].second)){
				dp[i]=make_pair(dp[i-1].first+1,dp[i-1].second);
				pre[i]=make_pair(i-1,1);
			}
		}
		if(s[i]=='V'){
			if(dp[i]>make_pair(dp[i-1].first+1,dp[i-1].second)){
				dp[i]=make_pair(dp[i-1].first+1,dp[i-1].second);
				pre[i]=make_pair(i-1,5);
			}
		}
		if(s[i-1]=='V'&&s[i]=='I'){
			if(dp[i]>make_pair(dp[i-2].first+1,(i==2?6:dp[i-2].second))){
				dp[i]=make_pair(dp[i-2].first+1,(i==2?6:dp[i-2].second));
				pre[i]=make_pair(i-2,6);
			}
		}
		if(s[i-1]=='I'&&s[i]=='V'){
			if(dp[i]>make_pair(dp[i-2].first+1,(i==2?4:dp[i-2].second))){
				dp[i]=make_pair(dp[i-2].first+1,(i==2?4:dp[i-2].second));
				pre[i]=make_pair(i-2,4);
			}
		}
		if(s[i-1]=='I'&&s[i]=='I'){
			if(dp[i]>make_pair(dp[i-2].first+1,(i==2?2:dp[i-2].second))){
				dp[i]=make_pair(dp[i-2].first+1,(i==2?2:dp[i-2].second));
				pre[i]=make_pair(i-2,2);
			}
		}
		if(i>2&&s[i-2]=='I'&&s[i-1]=='I'&&s[i]=='I'){
			if(dp[i]>make_pair(dp[i-3].first+1,(i==3?3:dp[i-3].second))){
				dp[i]=make_pair(dp[i-3].first+1,(i==3?3:dp[i-3].second));
				pre[i]=make_pair(i-3,3);
			}
		}
		if(i>2&&s[i-2]=='V'&&s[i-1]=='I'&&s[i]=='I'){
			if(dp[i]>make_pair(dp[i-3].first+1,(i==3?7:dp[i-3].second))){
				dp[i]=make_pair(dp[i-3].first+1,(i==3?7:dp[i-3].second));
				pre[i]=make_pair(i-3,7);
			}
		}
		if(i>3&&s[i-3]=='V'&&s[i-2]=='I'&&s[i-1]=='I'&&s[i]=='I'){
			if(dp[i]>make_pair(dp[i-4].first+1,(i==4?8:dp[i-4].second))){
				dp[i]=make_pair(dp[i-4].first+1,(i==4?8:dp[i-4].second));
				pre[i]=make_pair(i-4,8);
			}
		}
	}
	dfs(pre[n].first,pre[n].second);
	cout<<'\n';
	return;
} 

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cin>>T;
	for(int i=1;i<=T;++i){
		cin>>s;
		Work();
	}
	return 0;
} 

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 3664kb

input:

3
II
IVI
VIIIIIV

output:

2
16
634

result:

ok 3 lines

Test #2:

score: -100
Wrong Answer
time: 28ms
memory: 3572kb

input:

100000
VVIVVVVVII
VVVIIIIVVI
IVIIVIIIIV
VVVVVIIVVI
IIIVIVVVIV
VIVIIIIIVI
VVIIVVIVVI
IVVVIVVVVV
VIIVVVVIVV
VIIIIVVVVV
VVVVVVIVIV
VIVIIIVVVI
VIIIVIVVVI
VIIIIVVIIV
VIVVVIIVII
IIIIIVIIVI
IIIIVVVVII
IVIIVVIIVI
IVVIVVIIIV
IVVVIIIVIV
IIIIVIIIVV
VVVVVIVIIV
VVVIIIIVVV
VIVVIIIIVI
VIIIIIIIIV
VIVIVVVIVV
IVIIIVI...

output:

5655557
55846
1784
5555756
244565
6826
575656
45655555
6455655
845555
55555665
68556
74456
8475
54577
2376
34557
17576
46585
45865
13855
5555675
558455
54841
6334
5445655
1881
27755
34755
54856
55557555
48255
3856
74656
6831
5455665
738
4776
8666
1456655
555555556
44444
457655
5832
488
5455665
6336
...

result:

wrong answer 1st lines differ - expected: '5545557', found: '5655557'