#include <bits/stdc++.h> using namespace std; using ll = long long; ll mod = 1e9+7; ll query(string& s1, string& s2){ vector<vector<ll>> dp(601, vector<ll>(2)); dp[0][0] = 1ll; for (auto u: s1){ if (u == 'L'){ for (int i = 600; i > 0; i--){ dp[i][0] = (dp[i-1][1]+dp[i-1][0])%mod; } } else{ for (int i = 0; i < 600; i++) dp[i][1] = (dp[i+1][1] + dp[i+1][0])%mod; } } for (auto u: s2){ if (u == 'L'){ for (int i = 600; i > 0; i--){ dp[i][0] = (dp[i-1][1]+dp[i-1][0])%mod; } } else{ for (int i = 0; i < 600; i++) dp[i][1] = (dp[i+1][1] + dp[i+1][0])%mod; } } return dp[0][1]%mod; } int main(){ ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); int n; cin >> n; vector<string> s; string x; for (int i = 0; i < n; i++){ cin >> x; s.push_back(x); } for (int i = 0; i < n; i++){ for (int j = 0; j < n; j++) cout << query(s[i], s[j]) << ' '; cout << "\n"; } 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 | #include <bits/stdc++.h> using namespace std; using ll = long long; ll mod = 1e9+7; ll query(string& s1, string& s2){ vector<vector<ll>> dp(601, vector<ll>(2)); dp[0][0] = 1ll; for (auto u: s1){ if (u == 'L'){ for (int i = 600; i > 0; i--){ dp[i][0] = (dp[i-1][1]+dp[i-1][0])%mod; } } else{ for (int i = 0; i < 600; i++) dp[i][1] = (dp[i+1][1] + dp[i+1][0])%mod; } } for (auto u: s2){ if (u == 'L'){ for (int i = 600; i > 0; i--){ dp[i][0] = (dp[i-1][1]+dp[i-1][0])%mod; } } else{ for (int i = 0; i < 600; i++) dp[i][1] = (dp[i+1][1] + dp[i+1][0])%mod; } } return dp[0][1]%mod; } int main(){ ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); int n; cin >> n; vector<string> s; string x; for (int i = 0; i < n; i++){ cin >> x; s.push_back(x); } for (int i = 0; i < n; i++){ for (int j = 0; j < n; j++) cout << query(s[i], s[j]) << ' '; cout << "\n"; } return 0; } |