Submission #255838

#	Time	Username	Problem	Language	Result	Execution time	Memory
255838		uacoder123	Examination (JOI19_examination)	C++14	22 / 100	3080 ms	220940 KiB

examination

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;
#define F first
#define S second
#define FOR(i,a,b) for (auto i = (a); i <= (b); ++i)
#define NFOR(i,a,b) for(auto i = (a); i >= (b); --i)
#define all(x) (x).begin(), (x).end()
#define sz(x) int(x.size())
#define mp(i,a) make_pair(i,a)
#define pb(a) push_back(a)
#define bit(x,b) (x&(1LL<<b))
 
typedef long long int lli;
typedef pair <lli,lli> ii;
typedef pair <lli,ii> iii;
typedef vector <lli> vi;
typedef tree<
ii,
null_type,
less<ii>,
rb_tree_tag,
tree_order_statistics_node_update>
ordered_set;

ordered_set segt[8*100000+1];
lli n,q,co=1;
void up(lli node,lli l,lli r,lli in,lli v)
{
  segt[node].insert(mp(v,co));
  co++;
  lli m=(l+r)/2;
  if(l!=r)
  {
    if(in<=m)
      up(2*node+1,l,m,in,v);
    else
      up(2*node+2,m+1,r,in,v);
  }
}
lli query(lli node,lli l,lli r,lli s,lli e,lli v)
{
  if(r<s||l>e)
    return(0);
  if(l>=s&&r<=e)
    return segt[node].size()-segt[node].order_of_key(mp(v,0));
  lli m=(l+r)/2;
  lli q1=query(2*node+1,l,m,s,e,v),q2=query(2*node+2,m+1,r,s,e,v);
  return(q1+q2);
}
int main()
{
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cin>>n>>q;
  set<lli> v,v1;
  unordered_map<lli,lli> m,m1;
  ii s[n];
  pair<ii,lli> qu[q];
  for(lli i=0;i<n;++i)
  {
    cin>>s[i].F>>s[i].S;
    v.insert(s[i].F);
    v1.insert(s[i].F+s[i].S);
  }
  for(lli i=0;i<q;++i)
  {
    cin>>qu[i].F.F>>qu[i].F.S>>qu[i].S;
    v.insert(qu[i].F.F);
    v1.insert(qu[i].S); 
  }
  auto it=v.begin();
  lli c=0,c1=0;
  auto it1=v1.begin();
  while(it1!=v1.end())
  {
    m1[(*it1)]=c1;
    c1++;
    it1++;
  }
  c=0;
  while(it!=v.end())
  {
    m[(*it)]=c;
    c++;
    it++;
  }
  vector<ii> st[c1];
  vector<iii> que[c1];
  for(lli i=0;i<n;++i)
  {
    lli su=s[i].F+s[i].S;
    s[i].F=m[s[i].F];
    st[m1[su]].pb(mp(s[i].F,s[i].S));
  }
  for(lli i=0;i<q;++i)
  {
    qu[i].F.F=m[qu[i].F.F];
    qu[i].S=m1[qu[i].S];
    que[qu[i].S].pb(mp(i,mp(qu[i].F.F,qu[i].F.S)));
  }
  lli ans[q]={};
  for(lli i=c1-1;i>=0;--i)
  {
    for(lli j=0;j<st[i].size();++j)
      up(0,0,c-1,st[i][j].F,st[i][j].S);
    for(lli j=0;j<que[i].size();++j)
      ans[que[i][j].F]=query(0,0,c-1,que[i][j].S.F,c-1,que[i][j].S.S);
  }
  for(lli i=0;i<q;++i)
    cout<<ans[i]<<'\n';
  return(0);
}

Compilation message (stderr)

examination.cpp: In function 'int main()':
examination.cpp:106:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(lli j=0;j<st[i].size();++j)
                 ~^~~~~~~~~~~~~
examination.cpp:108:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(lli j=0;j<que[i].size();++j)
                 ~^~~~~~~~~~~~~~

• Subtask 1: 2 / 2
• Subtask 2: 20 / 20
• Subtask 3: 0 / 21
• Subtask 4: 0 / 57