include include using namespace std; typedef unsigned long long ull;unordered_map <ull,bool> mp;ull hash2[505][505],p1=469762049,p2=998244353,pow1[505],pow2[505];int n,m;inline ull get_hash(int x,int y,int x2,int y2){ return hash2[x2][y2]-hash2[x-1][y2]pow1[x2-x+1]-hash2[x2][y-1]pow2[y2-y+1...