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Submission #849002

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```#include<bits/stdc++.h>
using namespace std;
typedef long long LL;
typedef pair<int,int> PII;
typedef vector<LL> VI;
typedef vector<vector<LL> > VVI;
LL MOD = 1000000007;

VVI matrix_multi(VVI a,VVI b){
VVI ret(a.size(),VI(b[0].size(),0));
for(int k=0;k<a[0].size();k++)
for(int i=0;i<a.size();i++)
for(int j=0;j<b[0].size();j++)
{
ret[i][j] += a[i][k] * b[k][j] % MOD;
ret[i][j] %= MOD;
}
return ret;
}

VVI matrix_pow(VVI mat, LL k) {
int n = mat.size();
if(k==0) {
VVI init(n, VI(n, 0));
for(int i=0; i<n; i++)
init[i][i] = 1;
return init;
}
VVI tmp = matrix_pow(mat, k/2);
VVI ret = matrix_multi(tmp, tmp);
if(k%2==1) {
ret = matrix_multi(ret, mat);
}
return ret;
}

LL solve(LL cntBlack, LL H, LL yoko, LL K) {
VVI mat(2, VI(2, 0));
mat[0][0] = cntBlack;
mat[0][1] = -yoko;
mat[1][1] = H;
mat = matrix_pow(mat, K-1);
LL b = 1;
if(H == 0) b = 0;
LL ans =  mat[0][0] + b * mat[0][1];
ans %= MOD; ans += MOD; ans %= MOD;
return ans;

}

int main() {
LL H, W, K;
cin >> H >> W >> K;
vector<string> field;
int cntBlack = 0;
for(int i=0; i<H; i++) {
string s;
cin  >> s;
field.push_back(s);
for(int j=0; j<s.size(); j++)
if(s[j] == '#')
cntBlack++;
}

int cntH = 0, cntW = 0;
for(int i=0; i<H; i++) {
//		cout << field[i][0] << " " << field[i][W-1] << endl;
if(field[i][0] == field[i][W-1] && field[i][0] == '#')
cntH++;
}
for(int j=0; j<W; j++)
if(field[0][j] == field[H-1][j] && field[0][j] == '#' )
cntW++;
if(cntH > 0 && cntW > 0 || K == 0) {
cout << 1 << endl;
return 0;
}
LL cntA=0, cntB=0;
for(int i=0; i<H; i++) {
for(int j=0; j<W; j++) {
if(i<H-1) {
if(field[i][j] == field[i+1][j] && field[i][j] == '#')
cntA++;
}
if(j<W-1) {
if(field[i][j] == field[i][j+1] && field[i][j] == '#')
cntB++;
}
}
}

if(cntH == 0) {
swap(cntW, cntH);
swap(W, H);
swap(cntA, cntB);
}
//	cout << cntA << " " << cntB << endl;
//	cout << cntW << " " << cntH << endl;
cout << solve(cntBlack, cntH, cntB, K) << endl;

return 0;
}

```

#### Submission Info

Submission Time 2016-08-22 01:48:05+0900 F - Fraction of Fractal tokoharu C++14 (GCC 5.4.1) 1700 2153 Byte AC 79 ms 1280 KB

#### Judge Result

Set Name Sample All
Score / Max Score 0 / 0 1700 / 1700
Status
 AC × 3
 AC × 47
Set Name Test Cases
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 66 ms 1280 KB
02.txt AC 76 ms 1280 KB
03.txt AC 76 ms 1280 KB
04.txt AC 76 ms 1280 KB
05.txt AC 76 ms 1280 KB
06.txt AC 76 ms 1280 KB
07.txt AC 75 ms 1280 KB
08.txt AC 63 ms 1280 KB
09.txt AC 76 ms 1280 KB
10.txt AC 76 ms 1280 KB
11.txt AC 62 ms 1280 KB
12.txt AC 76 ms 1280 KB
13.txt AC 73 ms 1280 KB
14.txt AC 78 ms 1280 KB
15.txt AC 77 ms 1280 KB
16.txt AC 77 ms 1280 KB
17.txt AC 74 ms 1280 KB
18.txt AC 76 ms 1280 KB
19.txt AC 76 ms 1280 KB
20.txt AC 79 ms 1280 KB
21.txt AC 76 ms 1280 KB
22.txt AC 76 ms 1280 KB
23.txt AC 76 ms 1280 KB
24.txt AC 76 ms 1280 KB
25.txt AC 76 ms 1280 KB
26.txt AC 75 ms 1280 KB
27.txt AC 77 ms 1280 KB
28.txt AC 76 ms 1280 KB
29.txt AC 4 ms 256 KB
30.txt AC 4 ms 256 KB
31.txt AC 4 ms 256 KB
32.txt AC 4 ms 256 KB
33.txt AC 4 ms 256 KB
34.txt AC 4 ms 256 KB
35.txt AC 4 ms 256 KB
36.txt AC 4 ms 256 KB
37.txt AC 4 ms 256 KB
38.txt AC 4 ms 256 KB
39.txt AC 6 ms 256 KB
40.txt AC 4 ms 256 KB
41.txt AC 4 ms 256 KB
42.txt AC 4 ms 256 KB
43.txt AC 4 ms 256 KB
44.txt AC 4 ms 256 KB
s1.txt AC 4 ms 256 KB
s2.txt AC 6 ms 256 KB
s3.txt AC 4 ms 256 KB