Submission #987937

#	Time	Username	Problem	Language	Result	Execution time	Memory
987937		Antekb	Copy and Paste 3 (JOI22_copypaste3)	C++17	0 / 100	10 ms	14640 KiB

copypaste3

#include<bits/stdc++.h>
 
#pragma GCC optimize("Ofast")
//#pragma GCC optimize("trapv")
 
#define st first
#define nd second
#define pb push_back
#define eb emplace_back
#define pp(x) pop_back(x)
#define mp(a, b) make_pair(a, b)
#define all(x) (x).begin(), (x).end()
#define rev(x) reverse(all(x))
#define sor(x) sort(all(x))
#define sz(x) (int)(x).size()
#define rsz(x) resize(x)
 
using namespace std;
 
///~~~~~~~~~~~~~~~~~~~~~~~~~~
 
template <typename H, typename T> 
ostream& operator<<(ostream& os, pair<H, T> m){
	return os <<"("<< m.st<<", "<<m.nd<<")";
}
template <typename H> 
ostream& operator<<(ostream& os, vector<H> V){
	os<<"{";
	for(int i=0; i<V.size(); i++){
		if(i)os<<" ";
		os<<V[i];
	}
	os<<"}";
	return os;
}
 
void debug(){cerr<<"\n";}
template <typename H, typename... T>
void debug(H h, T... t) {cerr<<h; if (sizeof...(t)) cerr << ", "; debug(t...);}
#define deb(x...) cerr<<#x<<" = ";debug(x);
//#define deb(x...) ;
 
///~~~~~~~~~~~~~~~~~~~~~~~~~
 
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<pii > vii;
typedef vector<ll> vl;
typedef vector<pll> vll;
typedef string str;

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
template <typename T>
using ordered_set =
    tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

 
#define BOOST ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
 
mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
const int N=1<<20, INF=1e9+5, mod2=1e9+7, mod=998244353;

struct modint{
	int n=0;
	modint(){}
	modint(ll x){
		n=x%mod;
		if(n<0)n+=mod;
	}
	operator int(){
		return n;
	}
	modint operator+(modint a){a.n = n+a.n; if(a.n>=mod)a.n-=mod;return a;}
	modint operator+=(modint a){return (*this)=(*this)+a;}
	modint operator-(modint a){a.n = n-a.n; if(a.n<0)a.n+=mod;return a;}
	modint operator-=(modint a){return (*this)=(*this)-a;}
	modint operator*(modint a){a.n = (n*1ll*a.n)%mod; return a;}
	modint operator*=(modint a){return (*this)=(*this)*a;}
	modint por(const ll &m)const{
		modint a(1);
		if(m==0)return a;
		if(m==1)return (*this);
		a=por(m/2);
		a*=a;
		return a*(por(m&1));
	}
	modint odw(){
		return por((ll)mod-2);
	}
	modint operator/(modint a){return (*this)*a.odw();}
	modint operator/=(modint a){return (*this)=(*this)/a;}
	bool operator==(modint a){return a.n==n;}
	friend ostream& operator<<(ostream& os, modint m) {
		return os << m.n; 
	}
};
modint fact[N], fact2[N];
typedef vector<modint> vm;
void factinit(){
    fact[0]=1;
    for(int i=1; i<N; i++){
        fact[i]=(fact[i-1]*modint(i))%mod;
    }
    fact2[N-1]=fact[N-1].odw();
    for(int i=N-2; i>=0; i--){
    	fact2[i]=(fact2[i+1]*modint(i+1))%mod;
    }
}
modint npok(int _n, int _k){
    return fact[_n]*fact2[_k]*fact2[_n-_k];
}
const int M=2505;
ll dp[M][M];
int nxt[M][M];
int jmp[M][M];
int main(){
	//factinit();
	BOOST;
	int n;
	cin>>n;
	string s;
	cin>>s;
	int a, b, c;
	cin>>a>>b>>c;
	for(int i=0; i<n; i++){
		int t=i+1;
		while(t<n && s[i]!=s[t]){
			t++;
		}
		nxt[i][i]=jmp[i][i]=t;
		for(int j=i; j<n; j++)dp[i][j]=1e18;
	}
	deb(jmp[0][0], jmp[1][1]);
	for(int d=0; d<n; d++){
		if(d){
			for(int i=0; i<n-d; i++){
				int t=nxt[i][i+d-1];
				while(t+d<n && s[i+d]!=s[t+d]){
					t=nxt[t][t+d-1];
				}
				if(t+d>=n)t=n;
				nxt[i][i+d]=t;
				t=jmp[i][i+d-1];
				if(t+d>=n)t=n;
				while(t+d<n && (s[i+d]!=s[t+d] || t<=i+d)){
					t=nxt[t][t+d-1];
				}
				jmp[i][i+d]=t;
				//deb(i, i+d, nxt[i][i+d], jmp[i][i+d]);
			}
		}
		for(int i=0; i<n-d; i++){
			dp[i][i+d]=min(dp[i][i+d], dp[i+1][i+d]+a);
			dp[i][i+d]=min(dp[i][i+d], dp[i][i+d-1]+a);
			int t=jmp[i][i+d];
			for(int j=2; t+d<n; j++, t=jmp[t][t+d]){
				//deb(t, jmp[t][t+d], j, (t+d-i+1-(d+1)*j),dp[i][i+d],b,j*c);
				dp[i][t+d]=min(dp[i][t+d], a*1ll*(t+d-i+1-(d+1)*j)+dp[i][i+d]+b+j*c);
			}
		}
	}
	cout<<dp[0][n-1]<<"\n";
}

• Subtask 1: 0 / 1
• Subtask 2: 0 / 5
• Subtask 3: 0 / 14
• Subtask 4: 0 / 10
• Subtask 5: 0 / 32
• Subtask 6: 0 / 38