Submission #847618
Source Code Expand
#include <bits/stdc++.h> using namespace std; typedef pair<int, int> PII; typedef long long ll; #define fi first #define se second #define mp make_pair #define pb push_back #define pct __builtin_popcount #define P 1000000007 #define N 2010 string a[N], ca[N]; int n, m; ll k; int pow(int x, ll y) { int s = 1, t = x; while (y) { if (y&1) { s = (ll)s*t%P; } t = (ll)t*t%P; y /= 2; } return s; } int main () { cin >> n >> m >> k; if (k == 0 || k == 1) { puts ("1"); return 0; } k --; for (int i = 0; i < n; i ++) cin >> a[i]; bool cu = 0, cl = 0; for (int i = 0; i < m; i ++) if (a[0][i] == '#' && a[n-1][i] == '#') cu = 1; for (int i = 0; i < n; i ++) if (a[i][0] == '#' && a[i][m-1] == '#') cl = 1; if (cu && cl) { puts ("1"); } else if (!cu && !cl) { int S = 0; for (int i = 0; i < n; i ++) for (int j = 0; j < m; j ++) if (a[i][j] == '#') S ++; cout << pow(S, k) << endl; } else { if (cu) { for (int i = 0; i < m; i ++) { for (int j = 0; j < n; j ++) { ca[i] += a[j][i]; } } for (int i = 0; i < m; i ++) a[i] = ca[i]; swap(n, m); } int py = 0, pz = 0, ps = 0; for (int i = 0; i < n; i ++) { if (a[i][0] == '#' && a[i][m-1] == '#') ps ++; for (int j = 0; j < m; j ++) { if (a[i][j] == '#') { pz ++; if (j < m-1 && a[i][j+1] == '#') py ++; } } } int add = 1, ads = 0, asd = 0, ass = 1; int bdd = pz, bds = 0, bsd = (P-py)%P, bss = ps; while (k) { if (k&1) { int ndd = ((ll)add*bdd+(ll)ads*bsd)%P; int nds = ((ll)add*bds+(ll)ads*bss)%P; int nsd = ((ll)asd*bdd+(ll)ass*bsd)%P; int nss = ((ll)asd*bds+(ll)ass*bss)%P; add = ndd; ads = nds; asd = nsd; ass = nss; } int ndd = ((ll)bdd*bdd+(ll)bds*bsd)%P; int nds = ((ll)bdd*bds+(ll)bds*bss)%P; int nsd = ((ll)bsd*bdd+(ll)bss*bsd)%P; int nss = ((ll)bsd*bds+(ll)bss*bss)%P; bdd = ndd; bds = nds; bsd = nsd; bss = nss; k /= 2; } int ad = 1, as = 1; int S = ((ll)ad*add+(ll)as*asd)%P; cout << S << endl; } return 0; }
Submission Info
Submission Time | |
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Task | F - Fraction of Fractal |
User | sevenkplus |
Language | C++14 (GCC 5.4.1) |
Score | 1700 |
Code Size | 2158 Byte |
Status | AC |
Exec Time | 80 ms |
Memory | 2304 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 1700 / 1700 | ||||
Status |
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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 | 63 ms | 1280 KB |
02.txt | AC | 67 ms | 1280 KB |
03.txt | AC | 80 ms | 2304 KB |
04.txt | AC | 66 ms | 1280 KB |
05.txt | AC | 77 ms | 2304 KB |
06.txt | AC | 65 ms | 1280 KB |
07.txt | AC | 64 ms | 1280 KB |
08.txt | AC | 62 ms | 1280 KB |
09.txt | AC | 67 ms | 1280 KB |
10.txt | AC | 78 ms | 2304 KB |
11.txt | AC | 62 ms | 1280 KB |
12.txt | AC | 65 ms | 1280 KB |
13.txt | AC | 66 ms | 1280 KB |
14.txt | AC | 65 ms | 1280 KB |
15.txt | AC | 64 ms | 1280 KB |
16.txt | AC | 64 ms | 1280 KB |
17.txt | AC | 66 ms | 1280 KB |
18.txt | AC | 67 ms | 1280 KB |
19.txt | AC | 66 ms | 1280 KB |
20.txt | AC | 78 ms | 2304 KB |
21.txt | AC | 80 ms | 2304 KB |
22.txt | AC | 65 ms | 1280 KB |
23.txt | AC | 78 ms | 2304 KB |
24.txt | AC | 76 ms | 2304 KB |
25.txt | AC | 76 ms | 2304 KB |
26.txt | AC | 65 ms | 1280 KB |
27.txt | AC | 77 ms | 2304 KB |
28.txt | AC | 66 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 | 4 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 | 5 ms | 256 KB |
s1.txt | AC | 4 ms | 256 KB |
s2.txt | AC | 4 ms | 256 KB |
s3.txt | AC | 4 ms | 256 KB |