#pragma GCC optimize ("O3") #include <bits/stdc++.h> using namespace std; #define FOR(i, b, e) for(int i = (b); i < (e); i++) #define TRAV(x, v) for(auto &x: v) #define PB push_back #define SZ(x) ((int)x.size()) #define X first #define Y second using ll = long long; using vi = vector<int>; using ii = pair<int, int>; constexpr int INF = 0x3f3f3f3f; constexpr int mod = 1e9 + 7; int licz(string s) { int MAXB = SZ(s) / 2 + 1; vector<int> lastL(MAXB), lastR(MAXB); vector<int> ans(MAXB); ans[0] = 1; FOR(j, 0, SZ(s)) { vector<int> newAns = ans; if(s[j] == 'L') { FOR(i, 1, MAXB) newAns[i] = (1ll * newAns[i] + ans[i - 1] - lastL[i - 1] + mod) % mod; lastL = ans; } else { FOR(i, 0, MAXB - 1) newAns[i] = (1ll * newAns[i] + ans[i + 1] - lastR[i + 1] + mod) % mod; lastR = ans; } ans = newAns; } return ans[0] - 1; } void solve() { int n; cin >> n; vector<string> s(n); TRAV(x, s) cin >> x; FOR(i, 0, n) FOR(j, 0, n) cout << licz(s[i] + s[j]) << " \n"[j + 1 == n]; } int main() { ios::sync_with_stdio(0); cin.tie(0); // int tt; cin >> tt; // FOR(te, 0, tt) { // // cout << "Case #" << te + 1 << ": "; // solve(); // } 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 | #pragma GCC optimize ("O3") #include <bits/stdc++.h> using namespace std; #define FOR(i, b, e) for(int i = (b); i < (e); i++) #define TRAV(x, v) for(auto &x: v) #define PB push_back #define SZ(x) ((int)x.size()) #define X first #define Y second using ll = long long; using vi = vector<int>; using ii = pair<int, int>; constexpr int INF = 0x3f3f3f3f; constexpr int mod = 1e9 + 7; int licz(string s) { int MAXB = SZ(s) / 2 + 1; vector<int> lastL(MAXB), lastR(MAXB); vector<int> ans(MAXB); ans[0] = 1; FOR(j, 0, SZ(s)) { vector<int> newAns = ans; if(s[j] == 'L') { FOR(i, 1, MAXB) newAns[i] = (1ll * newAns[i] + ans[i - 1] - lastL[i - 1] + mod) % mod; lastL = ans; } else { FOR(i, 0, MAXB - 1) newAns[i] = (1ll * newAns[i] + ans[i + 1] - lastR[i + 1] + mod) % mod; lastR = ans; } ans = newAns; } return ans[0] - 1; } void solve() { int n; cin >> n; vector<string> s(n); TRAV(x, s) cin >> x; FOR(i, 0, n) FOR(j, 0, n) cout << licz(s[i] + s[j]) << " \n"[j + 1 == n]; } int main() { ios::sync_with_stdio(0); cin.tie(0); // int tt; cin >> tt; // FOR(te, 0, tt) { // // cout << "Case #" << te + 1 << ": "; // solve(); // } solve(); return 0; } |