# | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
---|---|---|---|---|---|---|---|
264782 | Nucleist | Linear Garden (IOI08_linear_garden) | C++14 | 1203 ms | 19680 KiB |
이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
//Self-control leads to consistency.
#include <bits/stdc++.h>
using namespace std;
#pragma GCC target ("avx2")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")
#define flash ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0)
#define debug(x) cerr << " - " << #x << ": " << x << endl;
#define debugs(x, y) cerr << " - " << #x << ": " << x << " " << #y << ": " << y << endl;
#define all(x) (x).begin(),(x).end()
#define sz(x) (ll)x.size()
#define ll long long
#define INF 1000000000
#define MOD 1000000007
#define pb push_back
#define ve vector<ll>
#define dos pair<ll,ll>
#define vedos vector<dos>
#define rand mt19937 rng(chrono::steady_clock::now().time_since_epoch().count())
#define EPS 0.000001
struct greateri
{
template<class T>
bool operator()(T const &a, T const &b) const { return a > b; }
};
void setIO(string s) {
ios_base::sync_with_stdio(0); cin.tie(0);
freopen((s+".in").c_str(),"r",stdin);
freopen((s+".out").c_str(),"w",stdout);
}
ll n,m;
ll dp[2][5][5][5];
ve hed;
ll ans=0;
int main()
{
//flash;
cin>>n;
cin>>m;
string in;
cin>>in;
ll dif=0;
ll low1=0;
ll high1=0;
ll rank=0;
ll last=n-1;
vector<pair<dos,dos>>g;
for (ll i = 0; i < sz(in); ++i)
{
if(in[i]=='P' && abs(dif-high1+1)<=2 && abs(dif-low1+1)<=2 && abs(dif+1)<=2){
g.pb({{i,max(high1,dif+1)},{min(low1,dif+1),dif+1}});
//rank=(rank+dp[{{i,max(high1,dif+1)},{min(low1,dif+1),dif+1}}])%m;
}
if(in[i]=='L'){
dif++;
high1=max(high1,dif);
low1=min(low1,dif);
}
else {
dif--;
low1=min(low1,dif);
high1=max(high1,dif);
}
}
reverse(all(g));
for(auto it:g){
int i=it.first.first;
high1=it.first.second;
low1=it.second.first;
dif=it.second.second;
while(last>=i){
for (ll high = -2; high <= 2; ++high)
{
for (ll low = -2; low <= 2; ++low)
{
for (ll cur = -2; cur <= 2; ++cur)
{
ll ans=0;
if(last==n-1){
dp[last%2][high+2][low+2][cur+2]=1;continue;
}
if(abs(cur-high+1)<=2 && abs(cur-low+1)<=2 && abs(cur+1)<=2){
ll sol=cur+1;
ans=(ans+dp[(last+1)%2][max(high,sol)+2][min(low,sol)+2][sol+2])%m;
}
if(abs(cur-high-1)<=2 && abs(cur-low-1)<=2 && abs(cur-1)<=2){
ll sol=cur-1;
ans=(ans+dp[(last+1)%2][max(high,sol)+2][min(low,sol)+2][sol+2])%m;
}
dp[(last)%2][high+2][low+2][cur+2]=ans%m;
}
}
}
last--;
}
rank=(rank+dp[i%2][high1+2][low1+2][dif+2])%m;
}
cout<<(rank+1)%m;
return 0;
}
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