CSES - Leirikisa 5 - Results
Submission details
Task:jedan
Sender:zxc
Submission time:2016-08-02 15:52:01 +0300
Language:C++
Status:READY
Result:100
Feedback
groupverdictscore
#1ACCEPTED100
Test results
testverdicttime
#1ACCEPTED0.06 sdetails
#2ACCEPTED0.05 sdetails
#3ACCEPTED0.06 sdetails
#4ACCEPTED0.06 sdetails
#5ACCEPTED0.06 sdetails
#6ACCEPTED0.06 sdetails
#7ACCEPTED0.06 sdetails
#8ACCEPTED0.06 sdetails
#9ACCEPTED0.05 sdetails
#10ACCEPTED0.06 sdetails
#11ACCEPTED0.06 sdetails
#12ACCEPTED0.06 sdetails
#13ACCEPTED0.05 sdetails
#14ACCEPTED0.05 sdetails
#15ACCEPTED0.06 sdetails
#16ACCEPTED0.05 sdetails
#17ACCEPTED0.06 sdetails
#18ACCEPTED0.05 sdetails
#19ACCEPTED0.06 sdetails
#20ACCEPTED0.06 sdetails
#21ACCEPTED0.06 sdetails
#22ACCEPTED0.06 sdetails
#23ACCEPTED0.07 sdetails
#24ACCEPTED0.06 sdetails
#25ACCEPTED0.07 sdetails
#26ACCEPTED0.06 sdetails
#27ACCEPTED0.12 sdetails
#28ACCEPTED0.17 sdetails
#29ACCEPTED0.18 sdetails
#30ACCEPTED0.23 sdetails
#31ACCEPTED0.23 sdetails
#32ACCEPTED0.23 sdetails
#33ACCEPTED0.23 sdetails
#34ACCEPTED0.24 sdetails
#35ACCEPTED0.23 sdetails
#36ACCEPTED0.22 sdetails
#37ACCEPTED0.23 sdetails
#38ACCEPTED0.23 sdetails

Code

#include <bits/stdc++.h>
using namespace std;
const int MN = 11000;
typedef long long ll;
const ll MOD = 1e9+7;
ll dp[MN];
ll dp2[MN];
int main() {
    int n;
    cin>>n;
    int x;
    cin>>x;
    if(x == 0 || x == -1) dp[0] = 1;
    for(int i = 0; i < n-1; ++i) {
	int x;
	cin>>x;
	if(x != -1) {
	    if(x == 0) {
		dp2[0] = (dp[0] + dp[1])%MOD;
	    }
	    else {
		dp2[x] = (dp[x+1] + dp[x] + dp[x-1])%MOD;
	    }
	}
	else {
	    dp2[0] = (dp[0] + dp[1])%MOD;
	    for(int j = 1; j < i+100; ++j) {
		dp2[j] = (dp[j-1] + dp[j] + dp[j+1])%MOD;
	    }
	}
	memcpy(dp, dp2, sizeof dp);
	memset(dp2, 0, sizeof dp2);
    }
    cout<<dp[0]<<'\n';
}

Test details

Test 1

Verdict: ACCEPTED

input
3
-1 2 -1

correct output
0

user output
0

Test 2

Verdict: ACCEPTED

input
3
-1 -1 -1

correct output
2

user output
2

Test 3

Verdict: ACCEPTED

input
6
-1 -1 -1 2 -1 -1

correct output
3

user output
3

Test 4

Verdict: ACCEPTED

input
1
-1

correct output
1

user output
1

Test 5

Verdict: ACCEPTED

input
1
0

correct output
1

user output
1

Test 6

Verdict: ACCEPTED

input
1
1

correct output
0

user output
0

Test 7

Verdict: ACCEPTED

input
15
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 ...

correct output
113634

user output
113634

Test 8

Verdict: ACCEPTED

input
30
-1 -1 -1 -1 -1 -1 -1 -1 7 -1 -...

correct output
33792

user output
33792

Test 9

Verdict: ACCEPTED

input
40
-1 -1 -1 -1 -1 -1 -1 6 -1 -1 -...

correct output
44058168

user output
44058168

Test 10

Verdict: ACCEPTED

input
50
-1 -1 -1 -1 4 -1 -1 -1 -1 -1 -...

correct output
885261321

user output
885261321

Test 11

Verdict: ACCEPTED

input
100
-1 -1 -1 -1 -1 -1 -1 -1 7 -1 -...

correct output
630105363

user output
630105363

Test 12

Verdict: ACCEPTED

input
200
0 -1 -1 -1 4 -1 -1 -1 -1 0 -1 ...

correct output
584749136

user output
584749136

Test 13

Verdict: ACCEPTED

input
300
-1 -1 0 -1 -1 -1 -1 -1 -1 -1 -...

correct output
440962689

user output
440962689

Test 14

Verdict: ACCEPTED

input
500
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 ...

correct output
861085225

user output
861085225

Test 15

Verdict: ACCEPTED

input
499
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 ...

correct output
686858355

user output
686858355

Test 16

Verdict: ACCEPTED

input
500
0 0 -1 -1 -1 3 -1 -1 -1 6 6 -1...

correct output
287620623

user output
287620623

Test 17

Verdict: ACCEPTED

input
500
0 -1 -1 1 -1 0 -1 0 -1 -1 3 -1...

correct output
132437565

user output
132437565

Test 18

Verdict: ACCEPTED

input
500
0 -1 1 -1 2 2 -1 4 -1 -1 -1 1 ...

correct output
545015067

user output
545015067

Test 19

Verdict: ACCEPTED

input
500
-1 1 1 -1 1 -1 1 -1 -1 1 -1 -1...

correct output
394701022

user output
394701022

Test 20

Verdict: ACCEPTED

input
500
0 -1 -1 2 -1 -1 -1 -1 -1 -1 -1...

correct output
287409105

user output
287409105

Test 21

Verdict: ACCEPTED

input
500
0 -1 -1 -1 -1 -1 -1 -1 -1 -1 -...

correct output
455719894

user output
455719894

Test 22

Verdict: ACCEPTED

input
500
-1 1 -1 -1 -1 -1 -1 -1 -1 -1 -...

correct output
174226870

user output
174226870

Test 23

Verdict: ACCEPTED

input
500
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 ...

correct output
861085225

user output
861085225

Test 24

Verdict: ACCEPTED

input
1000
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 ...

correct output
812718674

user output
812718674

Test 25

Verdict: ACCEPTED

input
2000
-1 1 -1 -1 -1 -1 -1 -1 -1 -1 -...

correct output
93994771

user output
93994771

Test 26

Verdict: ACCEPTED

input
3000
-1 0 -1 -1 -1 -1 -1 -1 -1 -1 -...

correct output
335231082

user output
335231082

Test 27

Verdict: ACCEPTED

input
5000
0 -1 2 -1 1 2 -1 -1 5 -1 -1 7 ...

correct output
799295101

user output
799295101

Test 28

Verdict: ACCEPTED

input
7000
0 -1 0 0 -1 0 -1 1 0 1 0 0 -1 ...

correct output
436287141

user output
436287141

Test 29

Verdict: ACCEPTED

input
8000
0 -1 1 -1 3 -1 1 -1 1 0 -1 -1 ...

correct output
88524447

user output
88524447

Test 30

Verdict: ACCEPTED

input
10000
0 0 1 -1 -1 3 2 -1 3 -1 4 -1 5...

correct output
129950957

user output
129950957

Test 31

Verdict: ACCEPTED

input
10000
-1 0 -1 -1 3 2 -1 -1 -1 -1 1 -...

correct output
598246902

user output
598246902

Test 32

Verdict: ACCEPTED

input
10000
-1 1 0 -1 2 1 -1 1 -1 0 -1 -1 ...

correct output
105842640

user output
105842640

Test 33

Verdict: ACCEPTED

input
10000
0 -1 0 -1 -1 -1 4 3 -1 -1 -1 -...

correct output
133310608

user output
133310608

Test 34

Verdict: ACCEPTED

input
10000
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 ...

correct output
484205143

user output
484205143

Test 35

Verdict: ACCEPTED

input
10000
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 ...

correct output
904817827

user output
904817827

Test 36

Verdict: ACCEPTED

input
10000
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 ...

correct output
966971895

user output
966971895

Test 37

Verdict: ACCEPTED

input
10000
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 ...

correct output
664825423

user output
664825423

Test 38

Verdict: ACCEPTED

input
10000
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 ...

correct output
681928184

user output
681928184