Submission #972816

#	Time	Username	Problem	Language	Result	Execution time	Memory
972816		simona1230	New Home (APIO18_new_home)	C++17	0 / 100	1008 ms	404044 KiB

new_home

#include <bits/stdc++.h>

using namespace std;

const int maxv=1e8;
const int maxn=3*1e5;

int n,q,k;
vector<int> pos[maxn];
struct store
{
    int x,a,b,t;
    store(){}
    store(int _x,int _t,int _a,int _b)
    {
        x=_x;
        t=_t;
        a=_a;
        b=_b;
    }
};
store s[maxn];
vector<int> qr[10*maxn];
vector<int> all;
map<int,int> opp,oppopp;
int val[maxn];
void read()
{
    cin>>n>>k>>q;
    for(int i=1;i<=n;i++)
    {
        int x,a,b,t;
        cin>>x>>t>>a>>b;
        pos[t].push_back(x);
        s[i]={x,t,a,b};
        all.push_back(x);
    }
    for(int i=1;i<=k;i++)
    {
        sort(pos[i].begin(),pos[i].end());
        for(int j=0;j<pos[i].size()-1;j++)
        {
            int sect=(pos[i][j]+pos[i][j+1]+1)/2;
            all.push_back(sect);
        }
    }

    for(int i=1;i<=q;i++)
    {
        int x,y;
        cin>>x>>y;
        val[i]=x;
        //qr[x].push_back(i);
        all.push_back(x);
    }

    sort(all.begin(),all.end());
    for(int i=0;i<all.size();i++)
        opp[all[i]]=i+1,oppopp[i+1]=all[i];

    for(int i=1;i<=q;i++)
    {
        qr[opp[val[i]]].push_back(i);
    }
}

int ans[maxn];
vector<int> change[maxn];
multiset<int> curr;
int idx[maxn];

void solve()
{
    for(int i=1;i<=k;i++)
    {
        curr.insert(pos[i][0]);
        if(pos[i].size()==0)continue;
        int x=pos[i][0],y=pos[i][1];
        int nxt=(y+x+1)/2;
        change[opp[nxt]].push_back(i);
    }

    for(int i=1;i<=all.size();i++)
    {
        for(int j=0;j<change[i].size();j++)
        {
            int x=change[i][j];

            int old=pos[x][idx[x]];
            curr.erase(curr.find(old));

            idx[x]++;
            int nw=pos[x][idx[x]];
            curr.insert(nw);
            if(idx[x]!=pos[x].size()-1)
            {
                int nxt=pos[x][idx[x]+1];
                change[opp[(nw+nxt+1)/2]].push_back(x);
            }
        }

        int h=oppopp[i];
        int here=max(h-*curr.begin(),*curr.rbegin()-h);

        for(int j=0;j<qr[i].size();j++)
        {
            ans[qr[i][j]]=here;
        }
    }

    for(int i=1;i<=q;i++)
        cout<<ans[i]<<endl;
}

int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);
	read();
	solve();
	return 0;
}
/*
4 2 4
3 1 1 10
9 2 2 4
7 2 5 7
4 1 8 10
1 1
5 1
6 1
10 1


4 2 4
3 1 1 10
9 2 2 4
7 2 5 7
4 1 8 10
1 1
5 1
6 1
10 1 4 2 4
4 -> 1
8 -> 2
1
1
2
10
*/

Compilation message (stderr)

new_home.cpp: In function 'void read()':
new_home.cpp:41:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |         for(int j=0;j<pos[i].size()-1;j++)
      |                     ~^~~~~~~~~~~~~~~~
new_home.cpp:58:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |     for(int i=0;i<all.size();i++)
      |                 ~^~~~~~~~~~~
new_home.cpp: In function 'void solve()':
new_home.cpp:83:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   83 |     for(int i=1;i<=all.size();i++)
      |                 ~^~~~~~~~~~~~
new_home.cpp:85:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   85 |         for(int j=0;j<change[i].size();j++)
      |                     ~^~~~~~~~~~~~~~~~~
new_home.cpp:95:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   95 |             if(idx[x]!=pos[x].size()-1)
      |                ~~~~~~^~~~~~~~~~~~~~~~~
new_home.cpp:105:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  105 |         for(int j=0;j<qr[i].size();j++)
      |                     ~^~~~~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 7
• Subtask 3: 0 / 10
• Subtask 4: 0 / 23
• Subtask 5: 0 / 35
• Subtask 6: 0 / 20