//Sylwia Sapkowska #include <bits/stdc++.h> using namespace std; void __print(int x) {cerr << x;} void __print(long long x) {cerr << x;} void __print(long double x) {cerr << x;} void __print(char x) {cerr << '\'' << x << '\'';} void __print(const char *x) {cerr << '\"' << x << '\"';} void __print(const string &x) {cerr << '\"' << x << '\"';} void __print(bool x) {cerr << (x ? "true" : "false");} template<typename T, typename V> void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ", "; __print(x.second); cerr << '}';} template<typename T> void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? ", " : ""), __print(i); cerr << "}";} void _print() {cerr << "]\n";} template <typename T, typename... V> void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);} #ifndef ONLINE_JUDGE #define debug(x...) cerr << "[" << #x << "] = ["; _print(x) #else #define debug(x...) #endif #define int long long const int mod = 1e9+7; int calc(string &s){ int n = (int)s.size(); vector<vector<int>>new_dp(2, vector<int>(n+1, 0)); vector<vector<int>>dp(2, vector<int>(n+1, 0)); for (int i = 0; i<n; i++){ int x = (s[i] == 'L') ? 1 : -1; int y = (s[i] == 'L') ? 0 : 1; for (int j = n-1; j>=0; j--){ if (x == -1 && j == 0) continue; new_dp[y][j+x] = dp[0][j] + dp[1][j]; if (new_dp[y][j+x] >= mod){ new_dp[y][j+x] -= mod; } } if (x == 1) { new_dp[y][1] += 1; if (new_dp[y][1] >= mod){ new_dp[y][1] -= mod; } } new_dp[1-y] = dp[1-y]; swap(dp, new_dp); new_dp.assign(2, vector<int>(n+1, 0)); } return dp[1][0]; } void solve(){ int n; cin >> n; vector<string>a(n); for (int i = 0; i<n; i++) cin >> a[i]; for (int i = 0; i<n; i++){ string t = a[i]; for (int j = 0; j<n; j++){ t += a[j]; cout << calc(t) << " "; for (int ck = 0; ck<(int)a[j].size(); ck++) t.pop_back(); } cout << "\n"; } } int32_t main(){ ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); solve(); return 0; }
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 | //Sylwia Sapkowska #include <bits/stdc++.h> using namespace std; void __print(int x) {cerr << x;} void __print(long long x) {cerr << x;} void __print(long double x) {cerr << x;} void __print(char x) {cerr << '\'' << x << '\'';} void __print(const char *x) {cerr << '\"' << x << '\"';} void __print(const string &x) {cerr << '\"' << x << '\"';} void __print(bool x) {cerr << (x ? "true" : "false");} template<typename T, typename V> void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ", "; __print(x.second); cerr << '}';} template<typename T> void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? ", " : ""), __print(i); cerr << "}";} void _print() {cerr << "]\n";} template <typename T, typename... V> void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);} #ifndef ONLINE_JUDGE #define debug(x...) cerr << "[" << #x << "] = ["; _print(x) #else #define debug(x...) #endif #define int long long const int mod = 1e9+7; int calc(string &s){ int n = (int)s.size(); vector<vector<int>>new_dp(2, vector<int>(n+1, 0)); vector<vector<int>>dp(2, vector<int>(n+1, 0)); for (int i = 0; i<n; i++){ int x = (s[i] == 'L') ? 1 : -1; int y = (s[i] == 'L') ? 0 : 1; for (int j = n-1; j>=0; j--){ if (x == -1 && j == 0) continue; new_dp[y][j+x] = dp[0][j] + dp[1][j]; if (new_dp[y][j+x] >= mod){ new_dp[y][j+x] -= mod; } } if (x == 1) { new_dp[y][1] += 1; if (new_dp[y][1] >= mod){ new_dp[y][1] -= mod; } } new_dp[1-y] = dp[1-y]; swap(dp, new_dp); new_dp.assign(2, vector<int>(n+1, 0)); } return dp[1][0]; } void solve(){ int n; cin >> n; vector<string>a(n); for (int i = 0; i<n; i++) cin >> a[i]; for (int i = 0; i<n; i++){ string t = a[i]; for (int j = 0; j<n; j++){ t += a[j]; cout << calc(t) << " "; for (int ck = 0; ck<(int)a[j].size(); ck++) t.pop_back(); } cout << "\n"; } } int32_t main(){ ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); solve(); return 0; } |