#include <iostream>
#include <vector>
#include <string>
using namespace std;
#define MAX_LEN 600
#define MOD 1000000007
void solve() {
int n;
cin >> n;
vector<string> vec(n);
for(int i = 0; i < n; i++) {
cin >> vec[i];
}
vector<vector<int>> result(n, vector<int>(n, 0));
for(int i = 0; i < n; i++) {
for(int j = 0; j < n; j++) {
string cur_str = vec[i] + vec[j];
vector<vector<int>> countL(cur_str.size()+1, vector<int>(cur_str.size()+1, 0));
vector<vector<int>> countP(cur_str.size()+1, vector<int>(cur_str.size()+1, 0));
int lastL = 0;
int lastP = 0;
if(cur_str[0] == 'L') {
countL[1][1] = 1;
lastL = 1;
}
for(int k = 1; k < cur_str.size(); k++) {
countL[k+1] = countL[k];
countP[k+1] = countP[k];
if(cur_str[k] == 'L') {
countL[k+1][1] += 1;
for(int q = 1; q < countL[k+1].size(); q++) {
countL[k+1][q] += (countL[k][q-1] + countP[k][q-1]) % MOD;
countL[k+1][q] %= MOD;
}
for(int q = 1; q < countL[k+1].size(); q++) {
countL[k+1][q] += MOD - countL[lastL][q];
countL[k+1][q] %= MOD;
}
lastL = k+1;
} else {
for(int q = 0; q < countP[k+1].size()-1; q++) {
countP[k+1][q] += (countL[k][q+1] + countP[k][q+1]) % MOD;
countP[k+1][q] %= MOD;
}
for(int q = 0; q < countP[k+1].size()-1; q++) {
countP[k+1][q] += MOD - countP[lastP][q];
countP[k+1][q] %= MOD;
}
lastP = k+1;
}
}
cout << (countL[countL.size()-1][0] + countP[countP.size()-1][0]) % MOD << " ";
}
cout << "\n";
}
}
int main(){
ios_base::sync_with_stdio(0);
cin.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 | #include <iostream> #include <vector> #include <string> using namespace std; #define MAX_LEN 600 #define MOD 1000000007 void solve() { int n; cin >> n; vector<string> vec(n); for(int i = 0; i < n; i++) { cin >> vec[i]; } vector<vector<int>> result(n, vector<int>(n, 0)); for(int i = 0; i < n; i++) { for(int j = 0; j < n; j++) { string cur_str = vec[i] + vec[j]; vector<vector<int>> countL(cur_str.size()+1, vector<int>(cur_str.size()+1, 0)); vector<vector<int>> countP(cur_str.size()+1, vector<int>(cur_str.size()+1, 0)); int lastL = 0; int lastP = 0; if(cur_str[0] == 'L') { countL[1][1] = 1; lastL = 1; } for(int k = 1; k < cur_str.size(); k++) { countL[k+1] = countL[k]; countP[k+1] = countP[k]; if(cur_str[k] == 'L') { countL[k+1][1] += 1; for(int q = 1; q < countL[k+1].size(); q++) { countL[k+1][q] += (countL[k][q-1] + countP[k][q-1]) % MOD; countL[k+1][q] %= MOD; } for(int q = 1; q < countL[k+1].size(); q++) { countL[k+1][q] += MOD - countL[lastL][q]; countL[k+1][q] %= MOD; } lastL = k+1; } else { for(int q = 0; q < countP[k+1].size()-1; q++) { countP[k+1][q] += (countL[k][q+1] + countP[k][q+1]) % MOD; countP[k+1][q] %= MOD; } for(int q = 0; q < countP[k+1].size()-1; q++) { countP[k+1][q] += MOD - countP[lastP][q]; countP[k+1][q] %= MOD; } lastP = k+1; } } cout << (countL[countL.size()-1][0] + countP[countP.size()-1][0]) % MOD << " "; } cout << "\n"; } } int main(){ ios_base::sync_with_stdio(0); cin.tie(0); solve(); return 0; } |
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