CSES - Datatähti 2025 alku - Results
Submission details
Task:Niitty
Sender:maweiyin24562
Submission time:2024-11-04 11:18:30 +0200
Language:C++ (C++11)
Status:READY
Result:58
Feedback
groupverdictscore
#1ACCEPTED4
#2ACCEPTED6
#3ACCEPTED10
#4ACCEPTED13
#5ACCEPTED25
#60
Test results
testverdicttimegroup
#1ACCEPTED0.00 s1, 2, 3, 4, 5, 6details
#2ACCEPTED0.00 s1, 2, 3, 4, 5, 6details
#3ACCEPTED0.00 s1, 2, 3, 4, 5, 6details
#4ACCEPTED0.00 s1, 2, 3, 4, 5, 6details
#5ACCEPTED0.00 s1, 2, 3, 4, 5, 6details
#6ACCEPTED0.00 s2, 3, 4, 5, 6details
#7ACCEPTED0.00 s2, 3, 4, 5, 6details
#8ACCEPTED0.00 s2, 3, 4, 5, 6details
#9ACCEPTED0.00 s2, 3, 4, 5, 6details
#10ACCEPTED0.01 s3, 4, 5, 6details
#11ACCEPTED0.01 s3, 4, 5, 6details
#12ACCEPTED0.01 s3, 4, 5, 6details
#13ACCEPTED0.01 s3, 4, 5, 6details
#14ACCEPTED0.03 s4, 5, 6details
#15ACCEPTED0.03 s4, 5, 6details
#16ACCEPTED0.03 s4, 5, 6details
#17ACCEPTED0.02 s4, 5, 6details
#18ACCEPTED0.25 s5, 6details
#19ACCEPTED0.27 s5, 6details
#20ACCEPTED0.23 s5, 6details
#21ACCEPTED0.10 s5, 6details
#22--6details
#23--6details
#24--6details
#25--6details

Code

#include <bits/stdc++.h>

using namespace std;

#define IC(c) (int)(c-'A')
#define P(x) (1<<(x))
#define LG(x) log((double)(x))/log(2.0)

typedef long long ll;
const ll N=509;
const ll LN=12;
ll n,ans;
ll total;

//2D Sparse Table + State compression
//+ enum top bottom + double iterator

ll LOG[N];
ll g[N][N];
ll st[N][N][LN][LN];

bool check(ll x1,ll y1,ll x2,ll y2){
	ll tx=LOG[x2-x1+1];
	ll ty=LOG[y2-y1+1];
	ll m1=st[x1][y1][tx][ty];
	ll m2=st[x2-P(tx)+1][y1][tx][ty];
	ll m3=st[x1][y2-P(ty)+1][tx][ty];
	ll m4=st[x2-P(tx)+1][y2-P(ty)+1][tx][ty];
	ll s=m1|m2|m3|m4;
//	cout<<s<<endl;
	return (s^total)==0;
}

int main(){
//	freopen("input.txt","r",stdin);
	for(int i=1;i<=500;i++)LOG[i]=LG(i);
	cin>>n;
	for(ll i=1;i<=n;i++)
		for(ll j=1;j<=n;j++){
			char c;
			cin>>c;
			ll id=IC(c);
			g[i][j]=P(id);
			total=(total|P(id));
		}
	for(ll i=1;i<=n;i++)
		for(ll j=1;j<=n;j++)
			st[i][j][0][0]=g[i][j];
	ll t=LG(n);
	for(ll i=0;i<=t;i++){
		for(ll j=0;j<=t;j++){
			if(i==0&&j==0)continue;
			for(ll r=1;r+P(i)-1<=n;r++){
				for(ll c=1;c+P(j)-1<=n;c++){
					if(i)st[r][c][i][j]=(st[r][c][i-1][j]|st[r+P(i-1)][c][i-1][j]);
					else if(j)st[r][c][i][j]=(st[r][c][i][j-1]|st[r][c+P(j-1)][i][j-1]);
				}
            }
		}
	}
	
//	while(true){
//		int x1,y1,x2,y2;
//		cin>>x1>>y1>>x2>>y2;
//		cout<<check(x1,y1,x2,y2)<<endl;
//	}
	
	for(ll top=1;top<=n;top++){
		for(ll btm=top;btm<=n;btm++){//O(n^2)
			if(!check(top,1,btm,n)){
				if(btm==n){
					cout<<ans<<endl;
					return 0;
				}
				else continue;
			}
			ll l=1,r=1;
			//³ßÈ¡·¨É¨Ãè
			while(r<=n){//O(n)
				while(check(top,l+1,btm,r)&&l<r)l++;
				if(check(top,l,btm,r)){
//					cout<<top<<" "<<l<<" "<<btm<<" "<<r<<endl;
					ans+=l;
				}
				r++;
			}
		}
	}

	cout<<ans<<endl;
	return 0;
	
}

Test details

Test 1

Group: 1, 2, 3, 4, 5, 6

Verdict: ACCEPTED

input
10
TNCTNPNTPC
NPPNTNTPTP
NTNTTCNTCT
NPCPNPPNTT
...

correct output
2035

user output
2035

Test 2

Group: 1, 2, 3, 4, 5, 6

Verdict: ACCEPTED

input
10
NFWQLWNWYS
DZOQJVXFPJ
CNHXPXMCQD
QRTBVNLTQC
...

correct output
9

user output
9

Test 3

Group: 1, 2, 3, 4, 5, 6

Verdict: ACCEPTED

input
10
XXXXXXXXXX
XXXXXXXXXX
XXXXXXXXXX
XXXXXXXXXX
...

correct output
3025

user output
3025

Test 4

Group: 1, 2, 3, 4, 5, 6

Verdict: ACCEPTED

input
10
FFFFFFFFFF
FFFFFCFFFF
FFFFFFJFFF
FFFFFFFFFF
...

correct output
12

user output
12

Test 5

Group: 1, 2, 3, 4, 5, 6

Verdict: ACCEPTED

input
1
X

correct output
1

user output
1

Test 6

Group: 2, 3, 4, 5, 6

Verdict: ACCEPTED

input
20
BBCBUBOUOBBCUUBBCOUO
BOUCOOCUBCOOOCOBOCUO
UCCUUUOBCOCBCBUBUCOO
BUOBUCUCUOOBCOOUBUOO
...

correct output
38724

user output
38724

Test 7

Group: 2, 3, 4, 5, 6

Verdict: ACCEPTED

input
20
CBGLSHGZHYZDWBNDBJUG
SMUXOJQYPXZDTMJUIWOJ
XIDSTNBGHKRKOVUVMINB
MTQGCFRUHQKALXRNCQGS
...

correct output
8334

user output
8334

Test 8

Group: 2, 3, 4, 5, 6

Verdict: ACCEPTED

input
20
KKKKKKKKKKKKKKKKKKKK
KKKKKKKKKKKKKKKKKKKK
KKKKKKKKKKKKKKKKKKKK
KKKKKKKKKKKKKKKKKKKK
...

correct output
44100

user output
44100

Test 9

Group: 2, 3, 4, 5, 6

Verdict: ACCEPTED

input
20
AAAAAAAAXAAAAAAAAAAA
AAAWAAAAAAAAAAAAAOAA
AAAAAAAAAAAAAAAAAPAA
AAAAAAAAKAAAAAAAAAAZ
...

correct output
18

user output
18

Test 10

Group: 3, 4, 5, 6

Verdict: ACCEPTED

input
50
GRGREEEGREGXRXXEGXXREXGRRRGRRR...

correct output
1584665

user output
1584665

Test 11

Group: 3, 4, 5, 6

Verdict: ACCEPTED

input
50
AITIISJUHCCRZNKSDCNQKYSQRINFWJ...

correct output
1077746

user output
1077746

Test 12

Group: 3, 4, 5, 6

Verdict: ACCEPTED

input
50
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOO...

correct output
1625625

user output
1625625

Test 13

Group: 3, 4, 5, 6

Verdict: ACCEPTED

input
50
FFFFFFFFFFFFFFFFFFFFFFFFFFFFFF...

correct output
1680

user output
1680

Test 14

Group: 4, 5, 6

Verdict: ACCEPTED

input
100
NNCMDCDDCCNNNDNCMMNCDCDCCDCDNM...

correct output
25325366

user output
25325366

Test 15

Group: 4, 5, 6

Verdict: ACCEPTED

input
100
LIMQQIHASECROEVILNVULGWZJPPKOG...

correct output
22342463

user output
22342463

Test 16

Group: 4, 5, 6

Verdict: ACCEPTED

input
100
TTTTTTTTTTTTTTTTTTTTTTTTTTTTTT...

correct output
25502500

user output
25502500

Test 17

Group: 4, 5, 6

Verdict: ACCEPTED

input
100
QXQQQQQQQQQQQQQQQQQQQQQQQQQQQQ...

correct output
25650

user output
25650

Test 18

Group: 5, 6

Verdict: ACCEPTED

input
200
NAANANMMKNKKAKMKMAKNKMNKMMNNAA...

correct output
403292767

user output
403292767

Test 19

Group: 5, 6

Verdict: ACCEPTED

input
200
OMYWATTLURKQPTKEFMGGYAOONXWVSC...

correct output
388111321

user output
388111321

Test 20

Group: 5, 6

Verdict: ACCEPTED

input
200
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC...

correct output
404010000

user output
404010000

Test 21

Group: 5, 6

Verdict: ACCEPTED

input
200
LLLLLLLLLLLLLLLLLHLLLLLLLLLLLL...

correct output
14159445

user output
14159445

Test 22

Group: 6

Verdict:

input
500
VVHWVUHVHUWWWVUUUWVUUHUUWHWUVW...

correct output
15683003812

user output
(empty)

Test 23

Group: 6

Verdict:

input
500
OIMZGEQSBMBDSDXSWRFNKSGFEBBTJE...

correct output
15575906951

user output
(empty)

Test 24

Group: 6

Verdict:

input
500
IIIIIIIIIIIIIIIIIIIIIIIIIIIIII...

correct output
15687562500

user output
(empty)

Test 25

Group: 6

Verdict:

input
500
WWWWWWWWWWWWWWWWWWWWWWWWWWWWWW...

correct output
3058970930

user output
(empty)