Submission #363913

#	Time	Username	Problem	Language	Result	Execution time	Memory
363913		ogibogi2004	Cambridge (info1cup18_cambridge)	C++14	30 / 100	273 ms	8264 KiB

cambridge

#include<bits/stdc++.h>
using namespace std;
const int MAXN=1e5+6;
const int INF=2e9;
const int sq=300;
struct SegmentTree
{
	int node[MAXN];
	int lazy[MAXN];
	bool lz[MAXN];
	void init()
	{
		memset(lz,0,sizeof(lz));
		memset(lazy,0,sizeof(lazy));
		memset(node,0,sizeof(node));
	}
	int merge(int n1,int n2)
	{
		return max(n1,n2);
	}
	void push(int idx,int l,int r)
	{
		if(lz[idx]==0)return;
		node[idx]+=lazy[idx];
		if(l!=r)
		{
			lz[idx*2]=1;
			lz[idx*2+1]=1;
			lazy[idx*2]+=lazy[idx];
			lazy[idx*2+1]+=lazy[idx];
		}
		lazy[idx]=0;
		lz[idx]=0;
	}
	void update(int idx,int l,int r,int ql,int qr,int val)
	{
		push(idx,l,r);
		if(l>qr||r<ql||l>r)return;
		if(l>=ql&&r<=qr)
		{
			lz[idx]=1;
			lazy[idx]+=val;
			push(idx,l,r);
			return;
		}
		int mid=(l+r)/2;
		update(idx*2,l,mid,ql,qr,val);
		update(idx*2+1,mid+1,r,ql,qr,val);
		node[idx]=merge(node[idx*2],node[idx*2+1]);
	}
	int query(int idx,int l,int r,int ql,int qr)
	{
		push(idx,l,r);
		if(l>qr||r<ql||l>r)return -INF;
		if(l>=ql&&r<=qr)return node[idx];
		int mid=(l+r)/2;
		return merge(query(idx*2,l,mid,ql,qr),query(idx*2+1,mid+1,r,ql,qr));
	}
}tree;
int n,m;
int t[MAXN],d[MAXN];
int maxright[MAXN];
int where[MAXN];
void add(int idx)
{
	tree.update(1,1,n,where[idx],where[idx],INF-d[idx]);
	tree.update(1,1,n,where[idx],n,t[idx]);
}
void remove(int idx)
{
	tree.update(1,1,n,where[idx],where[idx],-INF+d[idx]);
	tree.update(1,1,n,where[idx],n,-t[idx]);
}
int main()
{
	cin>>n>>m;
	vector<pair<int,int> >v;
	for(int i=1;i<=n;i++)
	{
		cin>>t[i]>>d[i];
		v.push_back({d[i],i});
	}
	sort(v.begin(),v.end());
	for(int i=0;i<v.size();i++)
	{
		where[v[i].second]=i;
	}
	int r=0;
	tree.init();
	//cout<<tree.query(1,1,n,1,n)<<endl;
	tree.update(1,1,n,1,n,-INF);
	//cout<<tree.query(1,1,n,1,n)<<endl;
	for(int l=1;l<=n;l++)
	{
		while(r<=n&&tree.query(1,1,n,1,n)<0)
		{
			r++;
			if(r<=n)add(r);
		}
		remove(l);
		maxright[l]=r-1;
	}
	//for(int i=1;i<=n;i++)cout<<maxright[i]<<" ";
	//cout<<endl;
	for(int i=0;i<m;i++)
	{
		int ez,dp;
		cin>>ez>>dp;
		if(maxright[ez]>=dp)
		{
			cout<<"1\n";
		}
		else cout<<"0\n";
	}
return 0;
}

Compilation message (stderr)

cambridge.cpp: In function 'int main()':
cambridge.cpp:84:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   84 |  for(int i=0;i<v.size();i++)
      |              ~^~~~~~~~~

• Subtask 1: 15 / 15
• Subtask 2: 0 / 25
• Subtask 3: 15 / 15
• Subtask 4: 0 / 45