#include <bits/stdc++.h>
#ifdef LOCAL
#include <bits/debug.hpp>
#endif // LOCAL
#define ll long long
#define all(x) x.begin(), x.end()
#define Neco "Osmosmjerka"
#define resp(x) sort(all(x)), x.resize(unique(all(x)) - x.begin())
#define getbit(x,i) ((x >> i)&1)
#define _left id * 2, l, mid
#define _right id * 2 + 1, mid + 1, r
#define cntbit(x) __builtin_popcountll(x)
#define fi(i, a, b) for(int i = a; i <= b; i++)
#define fid(i, a, b) for(int i = a; i >= b; i--)
#define maxn (int) 507
using namespace std;
const ll mod = 1e9 + 7; //972663749
const ll base = 911382323;
const int dx[] = {0, -1, 0, 1, -1, -1, 1, 1};
const int dy[] = {-1, 0, 1, 0, -1, 1, -1, 1};
int n, m, k;
char a[maxn][maxn];
ll H[maxn][maxn][32], po[32];
unordered_map<ll, ll> S;
int md(int x, int m) {
return ((x % m) + m) % m;
}
ll calc(int u, int v, int t) {
ll ans = 0;
fi(i, 0, 30) if(getbit(k, i)) {
ans = (ans * po[i] + H[u][v][i]) ;
u = md(u + (1 << i) * dx[t], n);
v = md(v + (1 << i) * dy[t], m);
}
return ans;
}
ll HASH(string s) {
ll ans = 0;
for(char c : s) ans = (ans * base + c) % mod;
return ans;
}
void solve()
{
cin >> n >> m >> k;
fi(i, 0, n - 1) fi(j, 0, m - 1) cin >> a[i][j];
po[0] = base;
fi(i, 1, 30) po[i] = po[i - 1] * po[i - 1] ;
fi(t, 0, 7) {
fi(i, 0, n - 1) fi(j, 0, m - 1) H[i][j][0] = a[i][j];
fi(p, 1, 30) fi(i, 0, n - 1) fi(j, 0, m - 1) {
int u = md(i + (1 << (p - 1)) * dx[t], n);
int v = md(j + (1 << (p - 1)) * dy[t], m);
H[i][j][p] = (H[i][j][p - 1] * po[p - 1] + H[u][v][p - 1]) ;
}
fi(i, 0, n - 1) fi(j, 0, m - 1) {
S[calc(i, j, t)] ++;
}
}
ll mau = 1ll * (n * m * 8) * (n * m * 8);
ll tu = 0;
for(auto [x, sl] : S) tu = tu + 1ll * sl * sl;
ll g = __gcd(tu, mau);
tu /= g, mau /= g;
cout << tu << '/' << mau;
}
int main()
{
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
if(fopen(Neco".inp", "r")) {
freopen(Neco".inp", "r", stdin);
freopen(Neco".out", "w", stdout);
}
int nTest = 1;
// cin >> nTest;
po[0] = 1;
fi(i, 1, maxn * maxn - 2) po[i] = po[i - 1] * base ;
while(nTest--)
{
solve();
}
return 0;
}
Compilation message
osmosmjerka.cpp: In function 'int main()':
osmosmjerka.cpp:97:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
97 | freopen(Neco".inp", "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
osmosmjerka.cpp:98:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
98 | freopen(Neco".out", "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
osmosmjerka.cpp:106:47: warning: iteration 32 invokes undefined behavior [-Waggressive-loop-optimizations]
106 | fi(i, 1, maxn * maxn - 2) po[i] = po[i - 1] * base ;
| ~~~~~~~~^
osmosmjerka.cpp:14:38: note: within this loop
14 | #define fi(i, a, b) for(int i = a; i <= b; i++)
......
106 | fi(i, 1, maxn * maxn - 2) po[i] = po[i - 1] * base ;
| ~~~~~~~~~~~~~~~~~~~~~
osmosmjerka.cpp:106:5: note: in expansion of macro 'fi'
106 | fi(i, 1, maxn * maxn - 2) po[i] = po[i - 1] * base ;
| ^~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 2 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 3 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
4 ms |
2908 KB |
Output is correct |
| 6 |
Correct |
22 ms |
6676 KB |
Output is correct |
| 7 |
Correct |
216 ms |
29440 KB |
Output is correct |
| 8 |
Correct |
1257 ms |
86324 KB |
Output is correct |
