#include<bits/stdc++.h> #define pb push_back #define popb pop_back #define fi first #define se second #define turbo ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0); #define ll long long #define pii pair<int, int> #define pll pair<ll, ll> #define vll vector<pll> #define vii vector<pii> #define vi vector<int> #define vl vector<ll> #define vvi vector<vi> #define vvii vector<vii> #define vc vector<char> #define vvc vector<vector<char>> #define vb vector<bool> #define vvb vector<vb> #define mid (l+r)/2 #define endl '\n' #define lowbit(x) x&(-x) #define bits(x) __builtin_popcount(x) #define mins(se) (*se.begin()) #define maxs(se) (*--se.end()) #define ALL(x) x.begin(), x.end() using namespace std; const ll P = 1000000007; vector<string> vs; ll dp[1220][610][2]; void solve(int ind) { string s1 = vs[ind]; reverse(ALL(s1)); while(s1.size() and s1.back() == 'P') s1.popb(); reverse(ALL(s1)); dp[0][0][0] = 1; for(int i = 1; i <= s1.size(); i++) { if(s1[i-1] == 'L') { dp[i][0][0] = dp[i-1][0][0]; dp[i][0][1] = dp[i-1][0][1]; for(int j = 1; j < 610; j++) { dp[i][j][0] = (dp[i-1][j-1][0] + dp[i-1][j-1][1])%P; dp[i][j][1] = dp[i-1][j][1]; } } else{ for(int j = 0; j < 608; j++) { dp[i][j][1] = (dp[i-1][j+1][0] + dp[i-1][j+1][1])%P; dp[i][j][0] = dp[i-1][j][0]; } } } for(int k = 0; k < vs.size(); k++) { string s2 = vs[k]; if(s1.size() == 0){ reverse(ALL(s2)); while(s2.size() and s2.back() == 'P') s2.popb(); reverse(ALL(s2)); } for(int l = 0; l < s2.size(); l++) { int i = s1.size()+l+1; if(s2[l] == 'L') { dp[i][0][0] = dp[i-1][0][0]; dp[i][0][1] = dp[i-1][0][1]; for(int j = 1; j < 610; j++) { dp[i][j][0] = (dp[i-1][j-1][0] + dp[i-1][j-1][1])%P; dp[i][j][1] = dp[i-1][j][1]; } } else{ for(int j = 0; j < 608; j++) { dp[i][j][1] = (dp[i-1][j+1][0] + dp[i-1][j+1][1])%P; dp[i][j][0] = dp[i-1][j][0]; } } } //dpout(); cout << dp[s1.size()+s2.size()][0][1] << " "; } cout << endl; } int main() { turbo int n; cin >> n; vs = vector<string>(n); for(auto &it : vs) cin >> it; for(int i = 0; i < n; i++) solve(i); }
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 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 | #include<bits/stdc++.h> #define pb push_back #define popb pop_back #define fi first #define se second #define turbo ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0); #define ll long long #define pii pair<int, int> #define pll pair<ll, ll> #define vll vector<pll> #define vii vector<pii> #define vi vector<int> #define vl vector<ll> #define vvi vector<vi> #define vvii vector<vii> #define vc vector<char> #define vvc vector<vector<char>> #define vb vector<bool> #define vvb vector<vb> #define mid (l+r)/2 #define endl '\n' #define lowbit(x) x&(-x) #define bits(x) __builtin_popcount(x) #define mins(se) (*se.begin()) #define maxs(se) (*--se.end()) #define ALL(x) x.begin(), x.end() using namespace std; const ll P = 1000000007; vector<string> vs; ll dp[1220][610][2]; void solve(int ind) { string s1 = vs[ind]; reverse(ALL(s1)); while(s1.size() and s1.back() == 'P') s1.popb(); reverse(ALL(s1)); dp[0][0][0] = 1; for(int i = 1; i <= s1.size(); i++) { if(s1[i-1] == 'L') { dp[i][0][0] = dp[i-1][0][0]; dp[i][0][1] = dp[i-1][0][1]; for(int j = 1; j < 610; j++) { dp[i][j][0] = (dp[i-1][j-1][0] + dp[i-1][j-1][1])%P; dp[i][j][1] = dp[i-1][j][1]; } } else{ for(int j = 0; j < 608; j++) { dp[i][j][1] = (dp[i-1][j+1][0] + dp[i-1][j+1][1])%P; dp[i][j][0] = dp[i-1][j][0]; } } } for(int k = 0; k < vs.size(); k++) { string s2 = vs[k]; if(s1.size() == 0){ reverse(ALL(s2)); while(s2.size() and s2.back() == 'P') s2.popb(); reverse(ALL(s2)); } for(int l = 0; l < s2.size(); l++) { int i = s1.size()+l+1; if(s2[l] == 'L') { dp[i][0][0] = dp[i-1][0][0]; dp[i][0][1] = dp[i-1][0][1]; for(int j = 1; j < 610; j++) { dp[i][j][0] = (dp[i-1][j-1][0] + dp[i-1][j-1][1])%P; dp[i][j][1] = dp[i-1][j][1]; } } else{ for(int j = 0; j < 608; j++) { dp[i][j][1] = (dp[i-1][j+1][0] + dp[i-1][j+1][1])%P; dp[i][j][0] = dp[i-1][j][0]; } } } //dpout(); cout << dp[s1.size()+s2.size()][0][1] << " "; } cout << endl; } int main() { turbo int n; cin >> n; vs = vector<string>(n); for(auto &it : vs) cin >> it; for(int i = 0; i < n; i++) solve(i); } |