Submission #256445

#	Time	Username	Problem	Language	Result	Execution time	Memory
256445		uacoder123	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++14	64 / 100	3090 ms	242124 KiB

sortbooks

#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 int lli;
typedef pair <lli,lli> ii;
typedef pair <lli,ii> iii;
typedef vector <lli> vi;
typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;
vi segt[4000001];
int n,m,ans[4000001],ans1;
int arr[1000001];
void merge(int node)
{
  int s=0,s1=0;
  while(s!=segt[2*node+1].size()||s1!=segt[2*node+2].size())
  {
    if(s!=segt[2*node+1].size()&&(s1==segt[2*node+2].size()||segt[2*node+1][s]<segt[2*node+2][s1]))
    {
      segt[node].pb(segt[2*node+1][s]);
      s++;
    }
    else
    {
      segt[node].pb(segt[2*node+2][s1]);
      s1++;
    }
  }
}
void build(int node,int l,int r)
{
  if(l==r)
  {
    ans[node]=0;
    segt[node].pb(arr[l]);
    return;
  }
  int m=(l+r)/2;
  build(2*node+1,l,m);
  build(2*node+2,m+1,r);
  merge(node);
  ans[node]=max(ans[2*node+1],ans[2*node+2]);
  int it=lower_bound(all(segt[2*node+2]),*(--segt[2*node+1].end()))-segt[2*node+2].begin();
  if(it!=0)
  {
    it--;
    ans[node]=max(ans[node],*(--segt[2*node+1].end())+segt[2*node+2][it]);
  }
}
ii qu(int node,int l,int r,int s,int e,int cm)
{
  if(l>e||r<s)
    return(mp(0,cm));
  if(l>=s&&r<=e)
  {
    int it=lower_bound(all(segt[node]),cm)-segt[node].begin();
    ans1=0;
    if(it!=0)
    {
      it--;
      ans1=cm+segt[node][it];
    }
    return(mp(max(ans[node],ans1),max(cm,(*(--segt[node].end())))));
  }
  int m=(l+r)/2;
  ii q1=qu(2*node+1,l,m,s,e,cm);
  ii q2=qu(2*node+2,m+1,r,s,e,q1.S);
  return(mp(max(q1.F,q2.F),q2.S));
}
int main()
{
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cin>>n>>m;
  for(int i=0;i<n;++i)
    cin>>arr[i];
  build(0,0,n-1);
  for(int i=0;i<m;++i)
  {
    int f,s,k;
    cin>>f>>s>>k;
    f--;
    s--;
    ii a=qu(0,0,n-1,f,s,arr[f]);
    if(a.F<=k)
      cout<<1<<'\n';
    else
      cout<<0<<'\n';
  }
  return(0);
}

Compilation message (stderr)

sortbooks.cpp: In function 'void merge(int)':
sortbooks.cpp:26:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   while(s!=segt[2*node+1].size()||s1!=segt[2*node+2].size())
         ~^~~~~~~~~~~~~~~~~~~~~~~
sortbooks.cpp:26:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   while(s!=segt[2*node+1].size()||s1!=segt[2*node+2].size())
                                   ~~^~~~~~~~~~~~~~~~~~~~~~~
sortbooks.cpp:28:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if(s!=segt[2*node+1].size()&&(s1==segt[2*node+2].size()||segt[2*node+1][s]<segt[2*node+2][s1]))
        ~^~~~~~~~~~~~~~~~~~~~~~~
sortbooks.cpp:28:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if(s!=segt[2*node+1].size()&&(s1==segt[2*node+2].size()||segt[2*node+1][s]<segt[2*node+2][s1]))
                                   ~~^~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 9 / 9
• Subtask 3: 0 / 13
• Subtask 4: 17 / 17
• Subtask 5: 30 / 30
• Subtask 6: 0 / 23