Submission #246907

#	Time	Username	Problem	Language	Result	Execution time	Memory
246907		red1108	Two Dishes (JOI19_dishes)	C++17	100 / 100	4435 ms	164236 KiB

dishes

#include<bits/stdc++.h>
#include<ext/rope>
using namespace std;
using namespace __gnu_cxx;
#define fi first
#define se second
#define fastio ios_base::sync_with_stdio(false);cin.tie(0)
#define fopen freopen("input.txt", "r", stdin)
#define eb emplace_back
#define em emplace
#define prec(a) cout<<fixed;cout.precision(a);
#define all(a) (a).begin(), (a).end()
typedef long long ll;typedef long double ld;typedef unsigned long long ul;typedef unsigned int ui;typedef pair<int,int> pii;typedef pair<ll,ll> pll;
typedef tuple<int,int,int> tiii;
const ll INF = 2e18;
const int inf = 2e9;
template<class T>
void pr(T t) {cerr << t << " ";}
template<class T, class ...Args>
void pr(T a, Args ...args) {cerr << a << " ";pr(args...);}
template<class ...Args>
void prl(Args ...args) {pr(args...);cerr << endl;}


int n, m;
struct In{
	ll ti, lim, cost;
}A[1000100], B[1000100];
ll ans;
vector<pll> ad[1000100];
ll asum[1000100],bsum[1000100];
ll seg[4000100];
bool flag[4000100];
void prop(int x, int l, int r){
	if(!flag[x]) return ;
	if(l!=r) flag[x*2]=flag[x*2+1]=true;
	seg[x] = flag[x] = 0;
	return ;
}
ll get(int x, int l, int r, int s, int e){
	prop(x, l, r);
	if(r<s||e<l||s>e) return 0;
	if(s<=l&&r<=e) return seg[x];
	return get(x*2, l, (l+r)/2, s, e)+get(x*2+1, (l+r)/2+1,r,s,e);
}
void clr(int x, int l, int r, int s, int e){
	prop(x, l, r);
	if(r<s||e<l||s>e) return ;
	if(s<=l&&r<=e){
		flag[x]=true;
		prop(x,l,r);
		return ;
	}
	clr(x*2, l, (l+r)/2, s, e);clr(x*2+1, (l+r)/2+1,r,s,e);
	seg[x]=seg[x*2]+seg[x*2+1];
}
void add(int x, int l, int r, int i, ll v){
	prop(x,l,r);
	if(r<i||i<l) return ;
	if(l==r){
		seg[x]+=v;return ;
	}
	int m = (l+r)/2;
	if(i<=m) add(x*2, l, m, i, v);
	else add(x*2+1, m+1,r,i,v);
	seg[x] = seg[x*2]*(1-flag[x*2])+seg[x*2+1]*(1-flag[x*2+1]);
}
int get_left(int x, int l, int r, ll v){
	prop(x,l,r);
	if(l==r) return l;
	ll t = (flag[x*2]?0:seg[x*2]);
	if(t>v) return get_left(x*2, l,(l+r)/2, v);
	return get_left(x*2+1, (l+r)/2+1, r, v-t);
}
int main(){
	fastio;
	cin>>n>>m;
	for(int i=1;i<=n;i++){
		cin>>A[i].ti>>A[i].lim>>A[i].cost;
		asum[i]=asum[i-1]+A[i].ti;
	}
	for(int i=1;i<=m;i++){
		cin>>B[i].ti>>B[i].lim>>B[i].cost;
		bsum[i]=bsum[i-1]+B[i].ti;
	}
	for(int i=1;i<=n;i++){
		if(asum[i]>A[i].lim) continue;
		int j = upper_bound(bsum+1,bsum+m+1, A[i].lim-asum[i])-bsum-1;
		ans+=A[i].cost;
		if(j!=m) ad[i-1].eb(j+1, -A[i].cost);
	}
	for(int i=1;i<=m;i++){
		if(bsum[i]>B[i].lim) continue;
		int j = upper_bound(asum+1,asum+n+1, B[i].lim-bsum[i])-asum-1;
		if(j!=n) ad[j].eb(i,B[i].cost);
		else ans+=B[i].cost;
	}
	for(int i=0;i<=n;i++){
		sort(all(ad[i]), [](pll &a,pll &b){
			return a.se>b.se;
		});
		for(auto j:ad[i]){
			if(j.se>=0){
				add(1,0,m,j.fi,j.se);
				continue;
			}
			else{
				ll t = get(1,0,m,0,j.fi-1)-j.se;

				if(seg[1]<=t){
					clr(1,0,m,j.fi,m);
					continue;
				}
				int ind=get_left(1, 0, m, t);
				ll v=get(1, 0, m, 0, ind)-get(1, 0, m, ind,ind)-t;
				clr(1, 0, m, j.fi, ind-1);
				add(1, 0, m, ind, v);
			}
		}
	}
	cout<<ans+seg[1];
}

• Subtask 1: 5 / 5
• Subtask 2: 3 / 3
• Subtask 3: 7 / 7
• Subtask 4: 39 / 39
• Subtask 5: 11 / 11
• Subtask 6: 9 / 9
• Subtask 7: 17 / 17
• Subtask 8: 9 / 9