Submission #439010

#	Time	Username	Problem	Language	Result	Execution time	Memory
439010		kig9981	Food Court (JOI21_foodcourt)	C++17	68 / 100	1083 ms	65076 KiB

foodcourt

#include <bits/stdc++.h>

#ifdef NON_SUBMIT
#define TEST(n) (n)
#define tout cerr
#else
#define TEST(n) ((void)0)
#define tout cin
#endif

using namespace std;

struct Seg
{
	long long m, sm, lz, slz;
	Seg() : m(0), sm(0x7fffffffffffffffLL), lz(0), slz(-0x7fffffffffffffffLL) {}
	Seg &operator =(const Seg &a) {
		m=a.m;
		sm=a.sm;
		return *this;
	}
};

const int SZ=1<<18;
const long long MAX=0x7fffffffffffffffLL;
Seg tree[2*SZ];
vector<tuple<int,int,long long>> L[2*SZ];

void update(int s, int e, int q, int c, int k)
{
	for(s+=SZ,e+=SZ;s<=e;s>>=1,e>>=1) {
		if(s&1) {
			L[s].emplace_back(q,c,get<2>(L[s].back())+k);
			s++;
		}
		if(~e&1) {
			L[e].emplace_back(q,c,get<2>(L[e].back())+k);
			e--;
		}
	}
}

Seg combine(const Seg &a, const Seg &b)
{
	Seg c;
	c.m=min(a.m,b.m);
	if(c.m<max(a.m,b.m)) c.sm=max(a.m,b.m);
	if(c.m<a.sm) c.sm=min(c.sm,a.sm);
	if(c.m<b.sm) c.sm=min(c.sm,b.sm);
	return c;
}

void lazy_propagation(int bit, int s, int e)
{
	if(tree[bit].slz!=-MAX) {
		if(s<e) {
			if(max(tree[2*bit].slz,tree[2*bit].m)+tree[2*bit].lz==tree[bit].m) tree[2*bit].slz=tree[bit].slz-tree[2*bit].lz;
			if(max(tree[2*bit+1].slz,tree[2*bit+1].m)+tree[2*bit+1].lz==tree[bit].m) tree[2*bit+1].slz=tree[bit].slz-tree[2*bit+1].lz;
		}
		tree[bit].m=tree[bit].slz;
		tree[bit].slz=-MAX;
	}
	tree[bit].m+=tree[bit].lz;
	if(tree[bit].sm<MAX) tree[bit].sm+=tree[bit].lz;
	if(s<e) {
		tree[2*bit].lz+=tree[bit].lz;
		tree[2*bit+1].lz+=tree[bit].lz;
	}
	tree[bit].lz=0;
}

void add_tree(int n1, int n2, int v, int bit=1, int s=0, int e=SZ-1)
{
	int m=(s+e)>>1;
	lazy_propagation(bit,s,e);
	if(n2<n1 || n2<s || e<n1) return;
	if(n1<=s && e<=n2) {
		tree[bit].lz=v;
		lazy_propagation(bit,s,e);
		return;
	}
	add_tree(n1,n2,v,2*bit,s,m);
	add_tree(n1,n2,v,2*bit+1,m+1,e);
	tree[bit]=combine(tree[2*bit],tree[2*bit+1]);
}

void set_tree(int n1, int n2, int bit=1, int s=0, int e=SZ-1)
{
	int m=(s+e)>>1;
	lazy_propagation(bit,s,e);
	if(n2<n1 || n2<s || e<n1 || tree[bit].m>=0) return;
	if(n1<=s && e<=n2 && tree[bit].sm>0) {
		tree[bit].slz=0;
		lazy_propagation(bit,s,e);
		return;
	}
	set_tree(n1,n2,2*bit,s,m);
	set_tree(n1,n2,2*bit+1,m+1,e);
	tree[bit]=combine(tree[2*bit],tree[2*bit+1]);
}

int main()
{
	ios::sync_with_stdio(false);
	cin.tie(NULL); cout.tie(NULL);
	TEST(freopen("input.txt","r",stdin));
	TEST(freopen("output.txt","w",stdout));
	TEST(freopen("debug.txt","w",stderr));
	int N, M, Q;
	cin>>N>>M>>Q;
	for(int i=2*SZ;--i;) L[i].emplace_back(0,0,0);
	for(int i=1;i<=Q;i++) {
		int t, a, c, d;
		long long b;
		cin>>t>>a>>b; --a;
		if(t==1) {
			cin>>c>>d;
			update(a,--b,i,c,d);
			add_tree(a,b,d);
		}
		else if(t==2) {
			cin>>c;
			add_tree(a,--b,-c);
			set_tree(a,b);
		}
		else {
			long long tot;
			int n=1, s=0, e=SZ-1;
			while(s<e) {
				int m=(s+e)>>1;
				lazy_propagation(n,s,e);
				if(a<=m) tie(n,e)=make_pair(2*n,m);
				else tie(n,s)=make_pair(2*n+1,m+1);
			}
			lazy_propagation(n,s,e);
			if(tree[n].m<b) {
				cout<<"0\n";
				continue;
			}
			for(tot=get<2>(L[n=SZ+a].back());n>>=1;) tot+=get<2>(L[n].back());
			b+=tot-tree[SZ+a].m;
			s=1; e=i-1;
			while(s<=e) {
				int m=(s+e)>>1; tot=0; n=SZ+a;
				for(;;) {
					tot+=get<2>(*--upper_bound(L[n].begin(),L[n].end(),make_tuple(m,0,0)));
					if(!(n>>=1)) break;
				}
				if(tot<b) s=m+1;
				else e=m-1;
			}
			n=SZ+a; e=tot=0;
			for(;;) {
				auto v=*--upper_bound(L[n].begin(),L[n].end(),make_tuple(s,0,0));
				if(get<0>(v)>tot) {
					tot=get<0>(v);
					e=get<1>(v);
				}
				if(!(n>>=1)) break;
			}
			cout<<e<<'\n';
		}
	}
	return 0;
}

• Subtask 1: 2 / 2
• Subtask 2: 5 / 5
• Subtask 3: 7 / 7
• Subtask 4: 0 / 21
• Subtask 5: 15 / 15
• Subtask 6: 13 / 13
• Subtask 7: 26 / 26
• Subtask 8: 0 / 11