Submission #674705

#	Time	Username	Problem	Language	Result	Execution time	Memory
674705		Antekb	수열 (BOI14_sequence)	C++14	100 / 100	525 ms	3576 KiB

sequence

#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);
 
///~~~~~~~~~~~~~~~~~~~~~~~~~
 
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;
 
#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 K=18, N=(1<<K), INF=1e9+5, mod=1e9+7, mod2=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 operator^(const ll &m)const{
		modint a(1);
		if(m==0)return a;
		if(m==1)return (*this);
		a=(*this)^(m/2);
		a*=a;
		return a*((*this)^(m&1));
	}
	modint odw(){
		return (*this)^((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];
}
ll solve(vector<int> V, bool b){
	//deb(V, b);
	int n=V.size();
	if(n==0)return 1;
	if(n==1 && V[0]==0){
		return 10*(!b);		
	}
	if(n==1){
		vi V2;
		for(int i=0; i<10; i++){
			if(V[0]&(1<<i))V2.pb(i);
		}
		assert(V.size());
		sor(V2);
		if(V2[0]==0){
			if(V2.size()==1)V2.pb(1);
			swap(V2[0], V2[1]);
		}
		//deb(V2);
		ll ans=0;
		for(int i:V2){
			ans*=10;
			ans+=i;
		}
		//deb(ans);
		return ans;
	}
	//deb(n, V);
	ll ans=1e18;
	for(int i=0; i<10; i++){
		vector<int> V2;
		for(int j=0; j<n; j++){
			if(i==j%10 || !V2.size())V2.pb(0);
			V2.back()|=V[j]&(~(1<<((j-i+10)%10)));
		}
		while(V2.size() && V2.back()==0)V2.pp();
		if(i==0 && V[0]&1){
			if(!V2.size())return 10;
		}
		if(!V2.size()){
			if(i==0 && b)return 0;
			else return 10-i;
		}
		//deb(V, b, i, V2);
		if(V2!=V)ans=min(ans, 10*solve(V2, b|i)+(10-i)%10);
		if(V2==V && !b && i)ans=min(ans, 10*solve(V2, b|i)+(10-i)%10);
		//deb(V, b, i, ans);
	}
	return ans;
}
int main(){
	//factinit();
	//BOOST;
	int n;
	cin>>n;
	vector<int> V(n);
	for(int i=0; i<n; ++i){
		int x;
		cin>>x;
		V[i]=1<<x;
	}

	cout<<solve(V, 0);
}

• Subtask 1: 9 / 9
• Subtask 2: 33 / 33
• Subtask 3: 25 / 25
• Subtask 4: 33 / 33