oj.uz

Submission #163187

# Submission time Handle Problem Language Result Execution time Memory
163187 2019-11-11T17:55:36 Z TadijaSebez None (JOI16_solitaire) C++11
100 / 100
 112 ms 660 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
const int N=2005;
const int M=3*N;
const int mod=1e9+7;
int mul(int x, int y){ return (ll)x*y%mod;}
void ckmul(int &x, int y){ x=mul(x,y);}
int add(int x, int y){ x+=y;return x>=mod?x-mod:x;}
void ckadd(int &x, int y){ x=add(x,y);}
int sub(int x, int y){ x-=y;return x<0?x+mod:x;}
void cksub(int &x, int y){ x=sub(x,y);}
int dp[2],dp_ok[2][M],dp_lo[2][M],dp_tmp[2][M],dp_pre[2][M];
char base[4][N];
void Clear(int col)
{
	dp[col]=0;
	for(int i=0;i<M;i++)
	{
		dp_ok[col][i]=0;
		dp_lo[col][i]=0;
		dp_tmp[col][i]=0;
		dp_pre[col][i]=0;
	}
}
int main()
{
	int n;
	scanf("%i",&n);
	scanf("%s %s %s",base[1]+1,base[2]+1,base[3]+1);
	for(int i=2;i<=n;i++) if(base[1][i]=='x' && base[1][i-1]=='x') return 0*printf("0\n");
	for(int i=2;i<=n;i++) if(base[3][i]=='x' && base[3][i-1]=='x') return 0*printf("0\n");
	int col=0,SZ=0;
	dp[col]=1;
	for(int i=1;i<=n+1;i++)
	{
		col^=1;
		Clear(col);
		if(base[2][i]=='x')
		{
			if(base[2][i-1]=='x')
			{
				for(int X=SZ+1;X>=1;X--)
				{
					if(X>SZ) dp_tmp[col][X]=0;
					else dp_tmp[col][X]=add(dp_tmp[col][X+1],dp_lo[col^1][X]);
				}
				int sum=0;
				for(int X=1;X<=SZ;X++) ckadd(sum,dp_ok[col^1][X]);
				for(int X=1;X<=SZ+1;X++) ckadd(dp_tmp[col][X],sum);
				for(int X=1;X<=SZ+1;X++)
				{
					dp_pre[col][X]=0;
					if(X>1) ckadd(dp_pre[col][X],add(dp_pre[col][X-1],dp_ok[col^1][X-1]));
				}
			}
			else
			{
				for(int X=SZ+1;X>=1;X--)
				{
					dp_tmp[col][X]=dp_pre[col][X]=dp[col^1];
				}
			}
			SZ++;
			int cs=(base[1][i]=='x')+(base[3][i]=='x');
			SZ+=cs;

			if(cs==0) for(int X=1;X<=SZ;X++) dp_ok[col][X]=dp_tmp[col][X];
			if(cs==1) for(int X=2;X<=SZ;X++) dp_ok[col][X]=mul(dp_tmp[col][X-1],X-1);
			if(cs==2) for(int X=3;X<=SZ;X++) dp_ok[col][X]=mul(dp_tmp[col][X-2],mul(X-1,X-2));

			//if(cs==0) for(int X=1;X<=SZ;X++) dp_lo[col][X]=dp_pre[col][X];
			if(cs==1) for(int X=1;X<=SZ;X++) dp_lo[col][X]=mul(dp_pre[col][X],SZ-X);
			if(cs==2) for(int X=1;X<=SZ;X++) dp_lo[col][X]=add(mul(dp_pre[col][X],mul(SZ-X,SZ-X-1)),mul(dp_pre[col][X-1],mul(mul(X-1,SZ-X),2)));
		}
		else
		{
			if(base[2][i-1]=='x')
			{
				for(int X=1;X<=SZ;X++) ckadd(dp[col],add(dp_ok[col^1][X],dp_lo[col^1][X]));
			}
			else
			{
				dp[col]=dp[col^1];
			}
			int cs=(base[1][i]=='x')+(base[3][i]=='x');
			SZ+=cs;
			if(cs==1) ckmul(dp[col],SZ);
			if(cs==2) ckmul(dp[col],mul(SZ,SZ-1));
		}

		/*printf("col:%i\n\n",i);
		if(base[2][i]=='x')
		{
			printf("dp_tmp:");for(int X=1;X<=SZ;X++) printf("%i ",dp_tmp[col][X]);printf("\n");
			printf("dp_pre:");for(int X=1;X<=SZ;X++) printf("%i ",dp_pre[col][X]);printf("\n");
			printf("dp_lo:");for(int X=1;X<=SZ;X++) printf("%i ",dp_lo[col][X]);printf("\n");
			printf("dp_ok:");for(int X=1;X<=SZ;X++) printf("%i ",dp_ok[col][X]);printf("\n");
		}
		else
		{
			printf("dp: %i\n",dp[col]);
		}
		printf("\n");*/
	}
	printf("%i\n",dp[col]);
	return 0;
}

Compilation message

solitaire.cpp: In function 'int main()':
solitaire.cpp:29:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%i",&n);
  ~~~~~^~~~~~~~~
solitaire.cpp:30:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s %s %s",base[1]+1,base[2]+1,base[3]+1);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 632 KB Output is correct
2 Correct 3 ms 504 KB Output is correct
3 Correct 3 ms 504 KB Output is correct
4 Correct 2 ms 504 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 2 ms 504 KB Output is correct
7 Correct 2 ms 504 KB Output is correct
8 Correct 2 ms 504 KB Output is correct
9 Correct 2 ms 504 KB Output is correct
10 Correct 3 ms 504 KB Output is correct
11 Correct 3 ms 504 KB Output is correct
12 Correct 2 ms 504 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 504 KB Output is correct
2 Correct 36 ms 632 KB Output is correct
3 Correct 14 ms 504 KB Output is correct
4 Correct 45 ms 504 KB Output is correct
5 Correct 42 ms 504 KB Output is correct
6 Correct 42 ms 504 KB Output is correct
7 Correct 34 ms 504 KB Output is correct
8 Correct 44 ms 556 KB Output is correct
9 Correct 44 ms 632 KB Output is correct
10 Correct 58 ms 504 KB Output is correct
11 Correct 39 ms 504 KB Output is correct
12 Correct 42 ms 504 KB Output is correct
13 Correct 51 ms 592 KB Output is correct
14 Correct 50 ms 504 KB Output is correct
15 Correct 52 ms 504 KB Output is correct
16 Correct 50 ms 508 KB Output is correct
17 Correct 51 ms 504 KB Output is correct
18 Correct 112 ms 568 KB Output is correct
19 Correct 67 ms 632 KB Output is correct
20 Correct 50 ms 504 KB Output is correct
21 Correct 49 ms 564 KB Output is correct
22 Correct 50 ms 504 KB Output is correct
23 Correct 55 ms 476 KB Output is correct
24 Correct 50 ms 504 KB Output is correct
25 Correct 50 ms 504 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 504 KB Output is correct
2 Correct 3 ms 504 KB Output is correct
3 Correct 3 ms 524 KB Output is correct
4 Correct 3 ms 552 KB Output is correct
5 Correct 3 ms 504 KB Output is correct
6 Correct 3 ms 504 KB Output is correct
7 Correct 7 ms 504 KB Output is correct
8 Correct 3 ms 504 KB Output is correct
9 Correct 3 ms 504 KB Output is correct
10 Correct 3 ms 508 KB Output is correct
11 Correct 3 ms 504 KB Output is correct
12 Correct 3 ms 504 KB Output is correct
13 Correct 3 ms 504 KB Output is correct
14 Correct 2 ms 504 KB Output is correct
15 Correct 3 ms 504 KB Output is correct
16 Correct 3 ms 504 KB Output is correct
17 Correct 3 ms 504 KB Output is correct
18 Correct 3 ms 504 KB Output is correct
19 Correct 3 ms 504 KB Output is correct
20 Correct 3 ms 504 KB Output is correct
21 Correct 3 ms 504 KB Output is correct
22 Correct 2 ms 504 KB Output is correct
23 Correct 2 ms 504 KB Output is correct
24 Correct 3 ms 504 KB Output is correct

Subtask #4
38.0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 632 KB Output is correct
2 Correct 3 ms 504 KB Output is correct
3 Correct 3 ms 504 KB Output is correct
4 Correct 2 ms 504 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 2 ms 504 KB Output is correct
7 Correct 2 ms 504 KB Output is correct
8 Correct 2 ms 504 KB Output is correct
9 Correct 2 ms 504 KB Output is correct
10 Correct 3 ms 504 KB Output is correct
11 Correct 3 ms 504 KB Output is correct
12 Correct 2 ms 504 KB Output is correct
13 Correct 3 ms 504 KB Output is correct
14 Correct 3 ms 504 KB Output is correct
15 Correct 3 ms 524 KB Output is correct
16 Correct 3 ms 552 KB Output is correct
17 Correct 3 ms 504 KB Output is correct
18 Correct 3 ms 504 KB Output is correct
19 Correct 7 ms 504 KB Output is correct
20 Correct 3 ms 504 KB Output is correct
21 Correct 3 ms 504 KB Output is correct
22 Correct 3 ms 508 KB Output is correct
23 Correct 3 ms 504 KB Output is correct
24 Correct 3 ms 504 KB Output is correct
25 Correct 3 ms 504 KB Output is correct
26 Correct 2 ms 504 KB Output is correct
27 Correct 3 ms 504 KB Output is correct
28 Correct 3 ms 504 KB Output is correct
29 Correct 3 ms 504 KB Output is correct
30 Correct 3 ms 504 KB Output is correct
31 Correct 3 ms 504 KB Output is correct
32 Correct 3 ms 504 KB Output is correct
33 Correct 3 ms 504 KB Output is correct
34 Correct 2 ms 504 KB Output is correct
35 Correct 2 ms 504 KB Output is correct
36 Correct 3 ms 504 KB Output is correct
37 Correct 4 ms 504 KB Output is correct
38 Correct 5 ms 504 KB Output is correct
39 Correct 3 ms 508 KB Output is correct
40 Correct 13 ms 604 KB Output is correct
41 Correct 7 ms 504 KB Output is correct
42 Correct 7 ms 504 KB Output is correct
43 Correct 7 ms 504 KB Output is correct
44 Correct 7 ms 504 KB Output is correct
45 Correct 7 ms 504 KB Output is correct
46 Correct 7 ms 504 KB Output is correct
47 Correct 7 ms 504 KB Output is correct
48 Correct 7 ms 504 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 632 KB Output is correct
2 Correct 3 ms 504 KB Output is correct
3 Correct 3 ms 504 KB Output is correct
4 Correct 2 ms 504 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 2 ms 504 KB Output is correct
7 Correct 2 ms 504 KB Output is correct
8 Correct 2 ms 504 KB Output is correct
9 Correct 2 ms 504 KB Output is correct
10 Correct 3 ms 504 KB Output is correct
11 Correct 3 ms 504 KB Output is correct
12 Correct 2 ms 504 KB Output is correct
13 Correct 17 ms 504 KB Output is correct
14 Correct 36 ms 632 KB Output is correct
15 Correct 14 ms 504 KB Output is correct
16 Correct 45 ms 504 KB Output is correct
17 Correct 42 ms 504 KB Output is correct
18 Correct 42 ms 504 KB Output is correct
19 Correct 34 ms 504 KB Output is correct
20 Correct 44 ms 556 KB Output is correct
21 Correct 44 ms 632 KB Output is correct
22 Correct 58 ms 504 KB Output is correct
23 Correct 39 ms 504 KB Output is correct
24 Correct 42 ms 504 KB Output is correct
25 Correct 51 ms 592 KB Output is correct
26 Correct 50 ms 504 KB Output is correct
27 Correct 52 ms 504 KB Output is correct
28 Correct 50 ms 508 KB Output is correct
29 Correct 51 ms 504 KB Output is correct
30 Correct 112 ms 568 KB Output is correct
31 Correct 67 ms 632 KB Output is correct
32 Correct 50 ms 504 KB Output is correct
33 Correct 49 ms 564 KB Output is correct
34 Correct 50 ms 504 KB Output is correct
35 Correct 55 ms 476 KB Output is correct
36 Correct 50 ms 504 KB Output is correct
37 Correct 50 ms 504 KB Output is correct
38 Correct 3 ms 504 KB Output is correct
39 Correct 3 ms 504 KB Output is correct
40 Correct 3 ms 524 KB Output is correct
41 Correct 3 ms 552 KB Output is correct
42 Correct 3 ms 504 KB Output is correct
43 Correct 3 ms 504 KB Output is correct
44 Correct 7 ms 504 KB Output is correct
45 Correct 3 ms 504 KB Output is correct
46 Correct 3 ms 504 KB Output is correct
47 Correct 3 ms 508 KB Output is correct
48 Correct 3 ms 504 KB Output is correct
49 Correct 3 ms 504 KB Output is correct
50 Correct 3 ms 504 KB Output is correct
51 Correct 2 ms 504 KB Output is correct
52 Correct 3 ms 504 KB Output is correct
53 Correct 3 ms 504 KB Output is correct
54 Correct 3 ms 504 KB Output is correct
55 Correct 3 ms 504 KB Output is correct
56 Correct 3 ms 504 KB Output is correct
57 Correct 3 ms 504 KB Output is correct
58 Correct 3 ms 504 KB Output is correct
59 Correct 2 ms 504 KB Output is correct
60 Correct 2 ms 504 KB Output is correct
61 Correct 3 ms 504 KB Output is correct
62 Correct 4 ms 504 KB Output is correct
63 Correct 5 ms 504 KB Output is correct
64 Correct 3 ms 508 KB Output is correct
65 Correct 13 ms 604 KB Output is correct
66 Correct 7 ms 504 KB Output is correct
67 Correct 7 ms 504 KB Output is correct
68 Correct 7 ms 504 KB Output is correct
69 Correct 7 ms 504 KB Output is correct
70 Correct 7 ms 504 KB Output is correct
71 Correct 7 ms 504 KB Output is correct
72 Correct 7 ms 504 KB Output is correct
73 Correct 7 ms 504 KB Output is correct
74 Correct 35 ms 504 KB Output is correct
75 Correct 14 ms 504 KB Output is correct
76 Correct 22 ms 660 KB Output is correct
77 Correct 52 ms 596 KB Output is correct
78 Correct 53 ms 504 KB Output is correct
79 Correct 38 ms 504 KB Output is correct
80 Correct 50 ms 504 KB Output is correct
81 Correct 45 ms 508 KB Output is correct
82 Correct 53 ms 504 KB Output is correct
83 Correct 38 ms 504 KB Output is correct
84 Correct 35 ms 504 KB Output is correct
85 Correct 45 ms 504 KB Output is correct
86 Correct 82 ms 632 KB Output is correct
87 Correct 81 ms 564 KB Output is correct
88 Correct 80 ms 504 KB Output is correct
89 Correct 81 ms 508 KB Output is correct
90 Correct 83 ms 504 KB Output is correct
91 Correct 81 ms 552 KB Output is correct
92 Correct 79 ms 564 KB Output is correct
93 Correct 82 ms 632 KB Output is correct
94 Correct 90 ms 504 KB Output is correct
95 Correct 92 ms 508 KB Output is correct
96 Correct 86 ms 504 KB Output is correct
97 Correct 79 ms 504 KB Output is correct