結果

問題 No.1996 <><
ユーザー bit_kyopro
提出日時 2022-07-01 23:09:39
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 432 ms / 2,000 ms
コード長 3,014 bytes
コンパイル時間 5,152 ms
コンパイル使用メモリ 262,956 KB
最終ジャッジ日時 2025-01-30 03:32:23
ジャッジサーバーID
(参考情報)
judge5 / judge1
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 4
other AC * 29
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

#include<bits/stdc++.h>
#include<atcoder/all>
using namespace atcoder;
//using mint = modint1000000007;
using mint = modint998244353;
//g++ -I/opt/ac-library ./**.cpp
using namespace std;
using ll = long long;
using ull = unsigned long long;
const long long MOD = 1000000007;
const long double PI = 3.14159265358979;
const long long INF = 1LL<<60;
template <typename T> bool chmax(T &a, const T& b){if(a < b){a = b;return true;}return false;}
template <typename T> bool chmin(T &a, const T& b){if(a > b){a = b;return true;}return false;}
#define deb(var) do{cout << #var << " : "; view(var);}while(0)
template<typename T> void view(T e){cout << e << endl;}
void view(vector<string>& v){cout << endl;for(auto& s :v){view(s);}cout << endl;}
template<typename T> void view(vector<T>& v){for(auto& e :v){cout << e << " ";}cout << endl;}
template<typename T> void view(vector<vector<T>>& vv){cout << endl;for(auto& v:vv){view(v);}}
ll gcd(ll a, ll b){if (b == 0) return a;else return gcd(b, a % b);}
ll lcm(ll x,ll y){return ll(x/gcd(x,y))*y;}
template<typename T> using min_priority_queue = priority_queue<T, vector<T>, greater<T>>;
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define int long long
template<class T>
struct compress{
vector<int> res;
vector<T> comp, A_copy;
int n;
int siz; //
compress(vector<T>& A){
n = A.size();
res.resize(n);
comp = A;
A_copy = A;
init();
}
void init(){
sort(comp.begin(), comp.end());
comp.erase(unique(comp.begin(), comp.end()), comp.end());
siz = comp.size();
for(int i=0; i<n; i++){
res[i] = lower_bound(comp.begin(), comp.end(), A_copy[i]) - comp.begin();
}
}
//
int max() {
return comp.size();
}
//
T raw(int a){
return comp[a];
}
//
int press(T a) {
return lower_bound(comp.begin(), comp.end(), a) - comp.begin();
}
};
int op(int a, int b) {
return (a + b) % MOD;
}
int e() {
return 0LL;
}
segtree<int, op, e> seg(10);
int32_t main() {
int n, k; cin >> n >> k;
vector<int> a(n);
string s;
for (int i=0; i<n; i++) {
cin >> a[i];
}
compress<int> C(a);
for (int i=0; i<n; i++) {
a[i] = C.press(a[i]);
}
cin >> s;
int mx = C.max();
vector<segtree<int, op, e>> dp(k + 1, segtree<int, op, e> (mx + 1));
for (int i=1; i<=n; i++) {
int v = a[i - 1];
for (int j=1; j<=min(k, i); j++) {
if (s[j - 1] == '<') {
dp[j].set(v, (dp[j].get(v) + dp[j - 1].prod(0LL, v)) % MOD);
}
else {
dp[j].set(v, (dp[j].get(v) + dp[j - 1].prod(v + 1, mx)) % MOD);
}
}
dp[0].set(v, dp[0].get(v) + 1LL);
}
int ans = dp[k].all_prod();
cout << ans << "\n";
}
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