Submission #689848

#	Time	Username	Problem	Language	Result	Execution time	Memory
689848		Antekb	Bodyguard (JOI21_bodyguard)	C++14	0 / 100	1666 ms	238156 KiB

bodyguard

#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;

#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=5605, 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];
}
const int M=3e6+5;
int edg[2][N][N], X[N], Y[N];
ll dp[N][N];
//vii co[2][N][N];
ll ans[M];
int main(){
	//factinit();
	//BOOST;
	int n, q;
	cin>>n>>q;
	vector<pair<pii, pii> > V;
	vector<int> cx, cy;
	for(int i=0; i<n; i++){
		int t, a, b, c;
		cin>>t>>a>>b>>c;
		V.eb(mp(t, c), mp(a, b));
		cx.pb(t-a);
		cx.pb(t-b+abs(a-b));
		cy.pb(t+a);
		cy.pb(t+b+abs(a-b));
	}
	vii Q;
	for(int i=0; i<q; i++){
		int t, x;
		cin>>t>>x;
		cx.pb(t-x);
		cy.pb(t+x);
		Q.eb(t-x, t+x);
	}
	//deb(cx, cy);
	sor(cx);
	cx.rsz(unique(all(cx))-cx.begin());
	sor(cy);
	cy.rsz(unique(all(cy))-cy.begin());
	int XX=cx.size(), YY=cy.size();
	for(int i=0; i<n; i++){
		int t=V[i].st.st, c=V[i].st.nd, a=V[i].nd.st, b=V[i].nd.nd;
		int x1=lower_bound(all(cx), t-a)-cx.begin();
		int x2=lower_bound(all(cx), t-b+abs(a-b))-cx.begin();
		int y1=lower_bound(all(cy), t+a)-cy.begin();
		int y2=lower_bound(all(cy), t+b+abs(a-b))-cy.begin();
		//deb(x1, y1, x2, y2, c);
		if(x1==x2){
			for(int y=y1; y<y2; y++){
				edg[0][x1][y]=max(edg[0][x1][y], c);
			}
		}
		else{
			for(int x=x1; x<x2; x++){
				edg[1][x][y1]=max(edg[1][x][y1], c);
			}
		}
	}
	for(int x=XX-1; x>=0; x--){
		for(int y=YY-1; y>=0; y--){
			if(x+1!=XX)dp[x][y]=max(dp[x+1][y]+edg[1][x][y]*1ll*(cx[x+1]-cx[x]), dp[x][y]);
			if(y+1!=YY)dp[x][y]=max(dp[x][y+1]+edg[0][x][y]*1ll*(cy[y+1]-cy[y]), dp[x][y]);
		}
	}
	for(pii &i:Q){
		i.st=lower_bound(all(cx), i.st)-cx.begin();
		i.nd=lower_bound(all(cy), i.nd)-cy.begin();
		//deb(cx[i.st], cy[i.nd]);
		cout<<dp[i.st][i.nd]/2<<"\n";
	}
}

• Subtask 1: 0 / 6
• Subtask 2: 0 / 7
• Subtask 3: 0 / 15
• Subtask 4: 0 / 20
• Subtask 5: 0 / 52