#include <bits/stdc++.h>
#include <cassert>
template <typename... Ts>
void __print(Ts&&... ts) {}
#ifdef DEBUG
#include "print.hpp"
#endif // DEBUG
using namespace std;
template <class T>
using pq_max = priority_queue<T>;
template <class T>
using pq_min = priority_queue<T, vector<T>, greater<T>>;
#define FOR(i, a, b) for (int i = a; i < (b); ++i)
#define F0R(i, a) for (int i = 0; i < (a); ++i)
#define FORd(i, a, b) for (int i = (b)-1; i >= a; --i)
#define F0Rd(i, a) for (int i = (a)-1; i >= 0; --i)
#define uid(a, b) uniform_int_distribution<int>(a, b)(rng)
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
#define all(x) x.begin(), x.end()
#define GET_FOR(_1, _2, _3, NAME, ...) NAME
#define loop(...) GET_FOR(__VA_ARGS__, FOR, F0R)(__VA_ARGS__)
#define GET_FORd(_1, _2, _3, NAME, ...) NAME
#define loopr(...) GET_FOR(__VA_ARGS__, FORd, F0Rd)(__VA_ARGS__)
#define sz(x) ((int)(x).size())
using ll = long long;
template <typename T>
using vec = vector<T>;
template <typename T, size_t N>
using arr = array<T, N>;
using vi = vector<int>;
using vvi = vector<vi>;
using vvvi = vector<vvi>;
using vl = vector<ll>;
using vvl = vector<vl>;
using pi = pair<int, int>;
using pl = pair<ll, ll>;
using vpi = vector<pi>;
///////////////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////////////
constexpr int P = int(1e9) + 7;
int get_perfect_drybls(const string& s) {
int n = int(s.size());
int n_l = count(all(s), 'L');
int n_lp = min(n_l, n - n_l);
vi pot_l(n_lp + 2);
vi pot_p(n_lp + 2);
pot_l[1] = 1;
int sol = 0;
for (char c : s) {
if (c == 'L') {
for (int i = 1; i <= n_lp; i++) {
pot_p[i - 1] = (pot_p[i - 1] + pot_l[i]) % P;
}
rotate(pot_l.rbegin(), pot_l.rbegin() + 1, pot_l.rend());
pot_l.front() = 0;
} else {
sol = (sol + pot_p[0]) % P;
for (int i = 1; i <= n_lp; i++) {
pot_l[i] = (pot_p[i - 1] + pot_l[i]) % P;
}
rotate(pot_p.begin(), pot_p.begin() + 1, pot_p.end());
pot_p.back() = 0;
}
}
return sol;
}
int main(void) {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
int n;
cin >> n;
vec<string> ss(n);
for (string& s : ss) {
cin >> s;
}
for (string& l : ss) {
for (string& r : ss) {
cout << get_perfect_drybls(l + r) << ' ';
}
cout << endl;
}
}
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 99 100 101 102 103 104 105 106 107 108 109 | #include <bits/stdc++.h> #include <cassert> template <typename... Ts> void __print(Ts&&... ts) {} #ifdef DEBUG #include "print.hpp" #endif // DEBUG using namespace std; template <class T> using pq_max = priority_queue<T>; template <class T> using pq_min = priority_queue<T, vector<T>, greater<T>>; #define FOR(i, a, b) for (int i = a; i < (b); ++i) #define F0R(i, a) for (int i = 0; i < (a); ++i) #define FORd(i, a, b) for (int i = (b)-1; i >= a; --i) #define F0Rd(i, a) for (int i = (a)-1; i >= 0; --i) #define uid(a, b) uniform_int_distribution<int>(a, b)(rng) mt19937 rng(chrono::steady_clock::now().time_since_epoch().count()); #define all(x) x.begin(), x.end() #define GET_FOR(_1, _2, _3, NAME, ...) NAME #define loop(...) GET_FOR(__VA_ARGS__, FOR, F0R)(__VA_ARGS__) #define GET_FORd(_1, _2, _3, NAME, ...) NAME #define loopr(...) GET_FOR(__VA_ARGS__, FORd, F0Rd)(__VA_ARGS__) #define sz(x) ((int)(x).size()) using ll = long long; template <typename T> using vec = vector<T>; template <typename T, size_t N> using arr = array<T, N>; using vi = vector<int>; using vvi = vector<vi>; using vvvi = vector<vvi>; using vl = vector<ll>; using vvl = vector<vl>; using pi = pair<int, int>; using pl = pair<ll, ll>; using vpi = vector<pi>; /////////////////////////////////////////////////////////////////////////////////////////////// /////////////////////////////////////////////////////////////////////////////////////////////// constexpr int P = int(1e9) + 7; int get_perfect_drybls(const string& s) { int n = int(s.size()); int n_l = count(all(s), 'L'); int n_lp = min(n_l, n - n_l); vi pot_l(n_lp + 2); vi pot_p(n_lp + 2); pot_l[1] = 1; int sol = 0; for (char c : s) { if (c == 'L') { for (int i = 1; i <= n_lp; i++) { pot_p[i - 1] = (pot_p[i - 1] + pot_l[i]) % P; } rotate(pot_l.rbegin(), pot_l.rbegin() + 1, pot_l.rend()); pot_l.front() = 0; } else { sol = (sol + pot_p[0]) % P; for (int i = 1; i <= n_lp; i++) { pot_l[i] = (pot_p[i - 1] + pot_l[i]) % P; } rotate(pot_p.begin(), pot_p.begin() + 1, pot_p.end()); pot_p.back() = 0; } } return sol; } int main(void) { ios_base::sync_with_stdio(false); cin.tie(NULL); int n; cin >> n; vec<string> ss(n); for (string& s : ss) { cin >> s; } for (string& l : ss) { for (string& r : ss) { cout << get_perfect_drybls(l + r) << ' '; } cout << endl; } } |
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