#include <iostream>
#include <vector>
#include <cassert>
#include <algorithm>
using namespace std;
const long long mod = 1'000'000'007;
const int H = 602;
long long left_dp[H][2];
long long right_dp[H][H][2];
long long my_dp[H][2];
long long basic[H];
int main() {
int n; cin >> n;
vector<string>t(n);
for(string &s : t)
cin >> s;
for(int i = 0; i < n; i++) {
right_dp[i][0][1] = 1;
string s = t[i];
reverse(s.begin(), s.end());
for(char c : s) {
for(int j = 0; j < H; j++)
my_dp[j][0] = my_dp[j][1] = 0;
if(c == 'L') {
for(int j = 0; j < H; j++) {
my_dp[j][1] = right_dp[i][j][1];
if(j + 1 < H) {
my_dp[j][0] = right_dp[i][j + 1][0];
my_dp[j][1] += right_dp[i][j + 1][0];
if(my_dp[j][1] >= mod)
my_dp[j][1] -= mod;
}
}
basic[i] += right_dp[i][1][0];
if(basic[i] >= mod)
basic[i] -= mod;
} else {
for(int j = 0; j < H; j++) {
my_dp[j][0] = right_dp[i][j][0];
if(j - 1 >= 0) {
my_dp[j][1] = right_dp[i][j - 1][1];
my_dp[j][0] += right_dp[i][j - 1][1];
if(my_dp[j][0] >= mod)
my_dp[j][0] -= mod;
}
}
}
swap(my_dp, right_dp[i]);
}
}
for(int i = 0; i < n; i++) {
for(int j = 0; j < H; j++)
left_dp[j][0] = left_dp[j][1] = 0;
for(char c : t[i]) {
for(int j = 0; j < H; j++)
my_dp[j][0] = my_dp[j][1] = 0;
if(c == 'L') {
my_dp[0][0] = 0;
my_dp[0][1] = left_dp[0][1];
for(int i = 1; i < H; i++) {
my_dp[i][1] = left_dp[i][1];
my_dp[i][0] += left_dp[i - 1][0] + left_dp[i - 1][1] + (i == 1 ? 1 : 0);
if(my_dp[i][0] >= mod)
my_dp[i][0] -= mod;
}
} else {
for(int i = 0; i < H - 1; i++) {
my_dp[i][0] = left_dp[i][0];
my_dp[i][1] += left_dp[i + 1][0] + left_dp[i + 1][1];
if(my_dp[i][1] >= mod)
my_dp[i][1] -= mod;
}
my_dp[H - 1][0] = left_dp[H - 1][0];
my_dp[H - 1][1] = 0;
}
swap(left_dp, my_dp);
}
for(int j = 0; j < n; j++) {
long long answer = basic[j];
for(int k = 0; k < H; k++) {
answer = (answer + left_dp[k][0] * right_dp[j][k][0] + left_dp[k][1] * right_dp[j][k][1]) % mod;
}
cout << answer << ' ';
}
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 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 99 100 101 102 103 104 105 106 | #include <iostream> #include <vector> #include <cassert> #include <algorithm> using namespace std; const long long mod = 1'000'000'007; const int H = 602; long long left_dp[H][2]; long long right_dp[H][H][2]; long long my_dp[H][2]; long long basic[H]; int main() { int n; cin >> n; vector<string>t(n); for(string &s : t) cin >> s; for(int i = 0; i < n; i++) { right_dp[i][0][1] = 1; string s = t[i]; reverse(s.begin(), s.end()); for(char c : s) { for(int j = 0; j < H; j++) my_dp[j][0] = my_dp[j][1] = 0; if(c == 'L') { for(int j = 0; j < H; j++) { my_dp[j][1] = right_dp[i][j][1]; if(j + 1 < H) { my_dp[j][0] = right_dp[i][j + 1][0]; my_dp[j][1] += right_dp[i][j + 1][0]; if(my_dp[j][1] >= mod) my_dp[j][1] -= mod; } } basic[i] += right_dp[i][1][0]; if(basic[i] >= mod) basic[i] -= mod; } else { for(int j = 0; j < H; j++) { my_dp[j][0] = right_dp[i][j][0]; if(j - 1 >= 0) { my_dp[j][1] = right_dp[i][j - 1][1]; my_dp[j][0] += right_dp[i][j - 1][1]; if(my_dp[j][0] >= mod) my_dp[j][0] -= mod; } } } swap(my_dp, right_dp[i]); } } for(int i = 0; i < n; i++) { for(int j = 0; j < H; j++) left_dp[j][0] = left_dp[j][1] = 0; for(char c : t[i]) { for(int j = 0; j < H; j++) my_dp[j][0] = my_dp[j][1] = 0; if(c == 'L') { my_dp[0][0] = 0; my_dp[0][1] = left_dp[0][1]; for(int i = 1; i < H; i++) { my_dp[i][1] = left_dp[i][1]; my_dp[i][0] += left_dp[i - 1][0] + left_dp[i - 1][1] + (i == 1 ? 1 : 0); if(my_dp[i][0] >= mod) my_dp[i][0] -= mod; } } else { for(int i = 0; i < H - 1; i++) { my_dp[i][0] = left_dp[i][0]; my_dp[i][1] += left_dp[i + 1][0] + left_dp[i + 1][1]; if(my_dp[i][1] >= mod) my_dp[i][1] -= mod; } my_dp[H - 1][0] = left_dp[H - 1][0]; my_dp[H - 1][1] = 0; } swap(left_dp, my_dp); } for(int j = 0; j < n; j++) { long long answer = basic[j]; for(int k = 0; k < H; k++) { answer = (answer + left_dp[k][0] * right_dp[j][k][0] + left_dp[k][1] * right_dp[j][k][1]) % mod; } cout << answer << ' '; } cout << '\n'; } return 0; } |
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