Submission #1838802
Source Code Expand
#include <cstdio> #include <iostream> #include <algorithm> #include <cstring> #include <assert.h> using namespace std; typedef long long ll; const int N=1010,P=1e9+7; struct mat{ int a[2][2]; mat(){ a[0][0]=a[1][1]=a[0][1]=a[1][0]=0; } int *operator [](int x){ return a[x]; } friend mat operator *(mat a,mat b){ mat c; c[0][0]=(1LL*a[0][0]*b[0][0]+1LL*a[0][1]*b[1][0])%P; c[0][1]=(1LL*a[0][0]*b[0][1]+1LL*a[0][1]*b[1][1])%P; c[1][0]=(1LL*a[1][0]*b[0][0]+1LL*a[1][1]*b[1][0])%P; c[1][1]=(1LL*a[1][0]*b[0][1]+1LL*a[1][1]*b[1][1])%P; return c; } }; mat u; int n,m; char a[N][N],b[N][N]; ll k; inline int judge(){ for(int i=1;i<=n;i++) if(a[i][1]=='#' && a[i][m]=='#') return 1; return 0; } inline void turn(){ for(int i=1;i<=n;i++) for(int j=1;j<=m;j++) b[m-j+1][i]=a[i][j]; swap(n,m); memcpy(a,b,sizeof(a)); } inline int Pow(int x,ll y){ int ret=1; for(;y;y>>=1,x=1LL*x*x%P) if(y&1) ret=1LL*ret*x%P; return ret; } inline mat Pow(mat x,ll y){ mat ret=u; for(;y;y>>=1,x=x*x) if(y&1) ret=ret*x; return ret; } int main(){ u[0][0]=u[1][1]=1; scanf("%d%d%lld",&n,&m,&k); int cnt=0; for(int i=1;i<=n;i++){ scanf("%s",a[i]+1); for(int j=1;j<=m;j++) cnt+=a[i][j]=='#'; } int A=judge(),B=(turn(),judge()); turn(); if((A && B) || !k) return puts("1"),0; if(!A && !B) return printf("%d\n",Pow(cnt,k-1)),0; if(!A) turn(); int c=0,b=0; for(int i=1;i<=n;i++) c+=(a[i][1]=='#' && a[i][m]=='#'); for(int i=1;i<=n;i++) for(int j=1;j<m;j++) b+=(a[i][j]=='#' && a[i][j+1]=='#'); mat w,ans; w[0][0]=cnt; w[0][1]=b; w[1][1]=c; ans=Pow(w,k-1); printf("%d\n",(ans[0][0]+P-ans[0][1])%P); return 0; }
Submission Info
Submission Time | |
---|---|
Task | F - Fraction of Fractal |
User | SBP |
Language | C++14 (GCC 5.4.1) |
Score | 1700 |
Code Size | 1791 Byte |
Status | AC |
Exec Time | 13 ms |
Memory | 2176 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:61:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%lld",&n,&m,&k); ^ ./Main.cpp:64:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",a[i]+1); ^
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 1700 / 1700 | ||||
Status |
|
|
Set Name | Test Cases |
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Sample | s1.txt, s2.txt, s3.txt |
All | 01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, 11.txt, 12.txt, 13.txt, 14.txt, 15.txt, 16.txt, 17.txt, 18.txt, 19.txt, 20.txt, 21.txt, 22.txt, 23.txt, 24.txt, 25.txt, 26.txt, 27.txt, 28.txt, 29.txt, 30.txt, 31.txt, 32.txt, 33.txt, 34.txt, 35.txt, 36.txt, 37.txt, 38.txt, 39.txt, 40.txt, 41.txt, 42.txt, 43.txt, 44.txt, s1.txt, s2.txt, s3.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
01.txt | AC | 10 ms | 2176 KB |
02.txt | AC | 11 ms | 2176 KB |
03.txt | AC | 13 ms | 2176 KB |
04.txt | AC | 11 ms | 2176 KB |
05.txt | AC | 13 ms | 2176 KB |
06.txt | AC | 10 ms | 2176 KB |
07.txt | AC | 9 ms | 2176 KB |
08.txt | AC | 10 ms | 2176 KB |
09.txt | AC | 11 ms | 2176 KB |
10.txt | AC | 13 ms | 2176 KB |
11.txt | AC | 10 ms | 2176 KB |
12.txt | AC | 10 ms | 2176 KB |
13.txt | AC | 10 ms | 2176 KB |
14.txt | AC | 10 ms | 2176 KB |
15.txt | AC | 10 ms | 2176 KB |
16.txt | AC | 9 ms | 2176 KB |
17.txt | AC | 10 ms | 2176 KB |
18.txt | AC | 11 ms | 2176 KB |
19.txt | AC | 11 ms | 2176 KB |
20.txt | AC | 13 ms | 2176 KB |
21.txt | AC | 13 ms | 2176 KB |
22.txt | AC | 10 ms | 2176 KB |
23.txt | AC | 12 ms | 2176 KB |
24.txt | AC | 12 ms | 2176 KB |
25.txt | AC | 12 ms | 2176 KB |
26.txt | AC | 10 ms | 2176 KB |
27.txt | AC | 12 ms | 2176 KB |
28.txt | AC | 10 ms | 2176 KB |
29.txt | AC | 2 ms | 1280 KB |
30.txt | AC | 2 ms | 1280 KB |
31.txt | AC | 2 ms | 1280 KB |
32.txt | AC | 2 ms | 1280 KB |
33.txt | AC | 2 ms | 1280 KB |
34.txt | AC | 2 ms | 1280 KB |
35.txt | AC | 2 ms | 1280 KB |
36.txt | AC | 2 ms | 1280 KB |
37.txt | AC | 2 ms | 1280 KB |
38.txt | AC | 2 ms | 1280 KB |
39.txt | AC | 2 ms | 1280 KB |
40.txt | AC | 2 ms | 1280 KB |
41.txt | AC | 2 ms | 1280 KB |
42.txt | AC | 2 ms | 1280 KB |
43.txt | AC | 2 ms | 1280 KB |
44.txt | AC | 2 ms | 1280 KB |
s1.txt | AC | 2 ms | 1280 KB |
s2.txt | AC | 2 ms | 1280 KB |
s3.txt | AC | 2 ms | 1280 KB |