oj.uz

Submission #117928

# Submission time Handle Problem Language Result Execution time Memory
117928 2019-06-17T12:48:17 Z sebinkim None (JOI16_solitaire) C++14
42 / 100
 80 ms 24200 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

const ll mod = 1e9 + 7;

char A[2020], B[2020], C[2020];
ll dp[2020][6060], S[2020];
ll X1[6060], X2[6060], X3[6060], Y[6060];
ll n, ans;

void die() { printf("0\n"); exit(0); }

int main()
{
	ll i, j, k, x, s, s1, s2, t1, t2;
	ll l1, l2, y;

	scanf("%lld%s%s%s", &n, A + 1, B + 1, C + 1);

	if(A[1] == 'x' || A[n] == 'x') die();
	if(C[1] == 'x' || C[n] == 'x') die();

	for(i=1; i<n; i++){
		if(A[i] == 'x' && A[i + 1] == 'x') die();
		if(C[i] == 'x' && C[i + 1] == 'x') die();
	}

	dp[0][0] = 1;

	for(i=1; i<=n; i++){
		S[i] = S[i - 1] + (A[i] == 'x') + (B[i] == 'x') + (C[i] == 'x');
		s = S[i];

		if(B[i] == 'o'){
			if(A[i] == 'x' && C[i] == 'x') t1 = 0;
			else if(A[i] == 'x' || C[i] == 'x') t1 = 1;
			else t1 = 2;

			for(k=0; k<=s; k++){
				if(t1 == 0) dp[i][0] = (dp[i][0] + dp[i - 1][k] * s * (s - 1)) % mod;
				else if(t1 == 1) dp[i][0] = (dp[i][0] + dp[i - 1][k] * s) % mod;
				else dp[i][0] = (dp[i][0] + dp[i - 1][k]) % mod;
			}

			if(B[i - 1] == 'o' || i < 3) continue;

			s2 = S[i - 2];
			if(A[i - 1] == 'x' && C[i - 1] == 'x') t2 = 0;
			else if(A[i - 1] == 'x' || C[i - 1] == 'x') t2 = 1;
			else t2 = 2;

			for(k=0; k<=s; k++){
				if(t2 == 0){
					x = k * (s2 - k + 2) * (s2 - k + 1) / 2 * 2 % mod;
					x = (x + (s2 - k + 3) * (s2 - k + 2) * (s2 - k + 1) / 6 * 4) % mod;
				}
				else if(t2 == 1) x = (s2 - k + 2) * (s2 - k + 1) / 2 % mod;
				else x = 0;

				x = x * dp[i - 2][k] % mod;

				if(t1 == 0) dp[i][0] = (dp[i][0] + x * s * (s - 1)) % mod;
				else if(t1 == 1) dp[i][0] = (dp[i][0] + x * s) % mod;
				else dp[i][0] = (dp[i][0] + x) % mod;
			}
		}
		else{
			if(A[i] == 'x' && C[i] == 'x') t1 = 0;
			else if(A[i] == 'x' || C[i] == 'x') t1 = 1;
			else t1 = 2;

			y = 0;
			for(k=0; k<=s; k++){
				y = (y + dp[i - 1][k]) % mod;
			}

			for(j=1; j<=s; j++){
				if(t1 == 0) dp[i][j] = (dp[i][j] + y * (j - 1) * (j - 2)) % mod;
				else if(t1 == 1) dp[i][j] = (dp[i][j] + y * (j - 1)) % mod;
				else dp[i][j] = (dp[i][j] + y) % mod;
			}

			if(B[i - 1] == 'o' || i < 3) continue;

			s2 = S[i - 2];
			s1 = s2 + S[i] - S[i - 1];
			if(A[i - 1] == 'x' && C[i - 1] == 'x') t2 = 0;
			else if(A[i - 1] == 'x' || C[i - 1] == 'x') t2 = 1;
			else t2 = 2;

			X1[s + 1] = X2[s + 1] = X3[s + 1] = 0;
			for(k=s; k>=0; k--){
				X1[k] = (X1[k + 1] + dp[i - 2][k] * (s1 - k + t1) % mod * (s1 - k + t1 - 1) * (s1 - k + t1 - 2) / 6 * 4) % mod;
				X2[k] = (X2[k + 1] + dp[i - 2][k] * (k + 3 - t1) % mod * (s1 - k + t1 - 1) * (s1 - k + t1 - 2)) % mod;
				X3[k] = (X3[k + 1] + dp[i - 2][k] * (s1 - k + t1 - 1) * (s1 - k + t1 - 2) / 2) % mod;
			}

			Y[0] = dp[i - 2][0];
			for(k=1; k<=s; k++){
				Y[k] = (Y[k - 1] + dp[i - 2][k]) % mod;
			}

			for(j=1; j<=s; j++){
				if(t1 == 0) x = (j - 1) * (j - 2) % mod;
				else if(t1 == 1) x = (j - 1) % mod;
				else x = 1;
				
				l1 = max(j + t1 - 2, 0ll);
				l2 = max(l1 - 1, 0ll);

				if(t2 == 0){
					dp[i][j] = (dp[i][j] + x * X1[l1]) % mod;
					dp[i][j] = (dp[i][j] + x * X2[l1] - j * x * X3[l1] * 2) % mod;
					dp[i][j + 1] = (dp[i][j + 1] + x * j * X3[l1] * 2) % mod;

					dp[i][j] = (dp[i][j] + x * Y[l2] % mod * ((s1 - j + 3) * (s1 - j + 2) * (s1 - j + 1) / 6 * 4) % mod) % mod;
					dp[i][j + 1] = (dp[i][j + 1] + x * Y[l2] * j * (s1 - j + 2) * (s1 - j + 1)) % mod;
				}
				else if(t2 == 1){
					dp[i][j] = (dp[i][j] + x * X3[l1]) % mod;

					dp[i][j] = (dp[i][j] + x * Y[l2] % mod * (s1 - j + 2) * (s1 - j + 1) / 2) % mod;
				}
			}

			dp[i][s + 1] = 0;
		}
	}

	s = S[n];

	for(i=0; i<=s; i++){
		ans = (ans + dp[n][i]) % mod;
	}

	ans = (ans + mod) % mod;

	printf("%lld\n", ans);

	return 0;
}

Compilation message

solitaire.cpp: In function 'int main()':
solitaire.cpp:21:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld%s%s%s", &n, A + 1, B + 1, C + 1);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 512 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 5744 KB Output is correct
2 Correct 37 ms 13816 KB Output is correct
3 Correct 9 ms 4604 KB Output is correct
4 Correct 57 ms 19252 KB Output is correct
5 Correct 51 ms 17784 KB Output is correct
6 Correct 48 ms 16888 KB Output is correct
7 Correct 32 ms 12612 KB Output is correct
8 Correct 57 ms 19348 KB Output is correct
9 Correct 59 ms 19672 KB Output is correct
10 Correct 31 ms 12288 KB Output is correct
11 Correct 42 ms 14840 KB Output is correct
12 Correct 58 ms 19592 KB Output is correct
13 Correct 78 ms 24100 KB Output is correct
14 Correct 75 ms 24176 KB Output is correct
15 Correct 75 ms 24184 KB Output is correct
16 Correct 77 ms 24144 KB Output is correct
17 Correct 76 ms 24156 KB Output is correct
18 Correct 78 ms 24184 KB Output is correct
19 Correct 78 ms 24184 KB Output is correct
20 Correct 80 ms 24200 KB Output is correct
21 Correct 79 ms 24184 KB Output is correct
22 Correct 77 ms 24184 KB Output is correct
23 Correct 79 ms 24184 KB Output is correct
24 Correct 77 ms 24056 KB Output is correct
25 Correct 78 ms 24184 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 512 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 512 KB Output is correct
5 Correct 2 ms 512 KB Output is correct
6 Correct 2 ms 512 KB Output is correct
7 Correct 2 ms 512 KB Output is correct
8 Correct 2 ms 512 KB Output is correct
9 Correct 2 ms 512 KB Output is correct
10 Correct 2 ms 512 KB Output is correct
11 Correct 2 ms 512 KB Output is correct
12 Correct 2 ms 512 KB Output is correct
13 Correct 2 ms 512 KB Output is correct
14 Correct 2 ms 512 KB Output is correct
15 Correct 2 ms 512 KB Output is correct
16 Correct 2 ms 512 KB Output is correct
17 Correct 2 ms 512 KB Output is correct
18 Correct 2 ms 512 KB Output is correct
19 Correct 2 ms 512 KB Output is correct
20 Correct 2 ms 512 KB Output is correct
21 Correct 2 ms 428 KB Output is correct
22 Correct 2 ms 512 KB Output is correct
23 Correct 2 ms 512 KB Output is correct
24 Correct 2 ms 512 KB Output is correct

Subtask #4
0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 512 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 512 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 2 ms 512 KB Output is correct
17 Correct 2 ms 512 KB Output is correct
18 Correct 2 ms 512 KB Output is correct
19 Correct 2 ms 512 KB Output is correct
20 Correct 2 ms 512 KB Output is correct
21 Correct 2 ms 512 KB Output is correct
22 Correct 2 ms 512 KB Output is correct
23 Correct 2 ms 512 KB Output is correct
24 Correct 2 ms 512 KB Output is correct
25 Correct 2 ms 512 KB Output is correct
26 Correct 2 ms 512 KB Output is correct
27 Correct 2 ms 512 KB Output is correct
28 Correct 2 ms 512 KB Output is correct
29 Correct 2 ms 512 KB Output is correct
30 Correct 2 ms 512 KB Output is correct
31 Correct 2 ms 512 KB Output is correct
32 Correct 2 ms 512 KB Output is correct
33 Correct 2 ms 428 KB Output is correct
34 Correct 2 ms 512 KB Output is correct
35 Correct 2 ms 512 KB Output is correct
36 Correct 2 ms 512 KB Output is correct
37 Correct 2 ms 768 KB Output is correct
38 Correct 3 ms 1152 KB Output is correct
39 Correct 3 ms 512 KB Output is correct
40 Incorrect 5 ms 1920 KB Output isn't correct
41 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 512 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 13 ms 5744 KB Output is correct
14 Correct 37 ms 13816 KB Output is correct
15 Correct 9 ms 4604 KB Output is correct
16 Correct 57 ms 19252 KB Output is correct
17 Correct 51 ms 17784 KB Output is correct
18 Correct 48 ms 16888 KB Output is correct
19 Correct 32 ms 12612 KB Output is correct
20 Correct 57 ms 19348 KB Output is correct
21 Correct 59 ms 19672 KB Output is correct
22 Correct 31 ms 12288 KB Output is correct
23 Correct 42 ms 14840 KB Output is correct
24 Correct 58 ms 19592 KB Output is correct
25 Correct 78 ms 24100 KB Output is correct
26 Correct 75 ms 24176 KB Output is correct
27 Correct 75 ms 24184 KB Output is correct
28 Correct 77 ms 24144 KB Output is correct
29 Correct 76 ms 24156 KB Output is correct
30 Correct 78 ms 24184 KB Output is correct
31 Correct 78 ms 24184 KB Output is correct
32 Correct 80 ms 24200 KB Output is correct
33 Correct 79 ms 24184 KB Output is correct
34 Correct 77 ms 24184 KB Output is correct
35 Correct 79 ms 24184 KB Output is correct
36 Correct 77 ms 24056 KB Output is correct
37 Correct 78 ms 24184 KB Output is correct
38 Correct 2 ms 384 KB Output is correct
39 Correct 2 ms 512 KB Output is correct
40 Correct 2 ms 384 KB Output is correct
41 Correct 2 ms 512 KB Output is correct
42 Correct 2 ms 512 KB Output is correct
43 Correct 2 ms 512 KB Output is correct
44 Correct 2 ms 512 KB Output is correct
45 Correct 2 ms 512 KB Output is correct
46 Correct 2 ms 512 KB Output is correct
47 Correct 2 ms 512 KB Output is correct
48 Correct 2 ms 512 KB Output is correct
49 Correct 2 ms 512 KB Output is correct
50 Correct 2 ms 512 KB Output is correct
51 Correct 2 ms 512 KB Output is correct
52 Correct 2 ms 512 KB Output is correct
53 Correct 2 ms 512 KB Output is correct
54 Correct 2 ms 512 KB Output is correct
55 Correct 2 ms 512 KB Output is correct
56 Correct 2 ms 512 KB Output is correct
57 Correct 2 ms 512 KB Output is correct
58 Correct 2 ms 428 KB Output is correct
59 Correct 2 ms 512 KB Output is correct
60 Correct 2 ms 512 KB Output is correct
61 Correct 2 ms 512 KB Output is correct
62 Correct 2 ms 768 KB Output is correct
63 Correct 3 ms 1152 KB Output is correct
64 Correct 3 ms 512 KB Output is correct
65 Incorrect 5 ms 1920 KB Output isn't correct
66 Halted 0 ms 0 KB -