Submission #998867

#	Time	Username	Problem	Language	Result	Execution time	Memory
998867		modwwe	Gift Exchange (JOI24_ho_t4)	C++17	100 / 100	1134 ms	73152 KiB

Main

#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target("avx,avx2,sse,sse2")
///https://www.instagram.com/_modwwe/
#include<bits/stdc++.h>
//#define int long long
//#define ll long long
#define down cout<<'\n';
#define NHP     ios_base::sync_with_stdio(0);cout.tie(0);cin.tie(0);
#define modwwe  int t;cin>>t; while(t--)
#define bit(i,j) (i>>j&1)
#define sobit(a) __builtin_popcountll(a)
#define task "test"
#define fin(x) freopen(x".inp","r",stdin)
#define fou(x) freopen(x".ans","w",stdout)
#define pb push_back
#define checktime   cerr << (double)clock() / CLOCKS_PER_SEC * 1000  << " ms";
using namespace std;
void phongbeo();
const int mod2=1e9+7;
const int  mod1=998244353;
struct icd
{
    int a,b;
};
struct ib
{
    int a;
    int b;
};
struct ic
{
    int a,b,c;
};
struct id
{
    int a,b,c,d;
};
struct ie
{
    int a,b,c, d,e,f;

};
int n,m,s1,s2,s4,s3,sf,k,r,mid,s5,s6,mx,s7,s8,s9,mx2,res,dem2=0,dem=0,l;
int  i,s10,s12;
int el=29;
main()
{
#ifndef ONLINE_JUDGE
    //fin(task),fou(task);
#endif
    NHP
    /// cin>>s1;
    // modwwe
    phongbeo(),down

}
ib a[500001];
int b[500001];
struct IT
{
    int t[2000001],lazy[2000001];
    void build(int node,int l,int r)
    {
        t[node]=0;
        lazy[node]=0;
        if(l==r) return;
        int mid=l+r>>1;
        build(node<<1,l,mid);
        build(node<<1|1,mid+1,r);
    }
    void ff(int x)
    {
        for(int i=x*2; i<=x*2+1; i++)
            t[i]=max(t[i],lazy[x]),
            lazy[i]=max(lazy[i],lazy[x]);

    }
    void upd(int node,int l,int r,int l1,int r1,int x)
    {
        if(l>r1||r<l1) return;
        if(l>=l1&&r<=r1)
        {
            t[node]=max(x,t[node]);
            lazy[node]=max(lazy[node],x);
            return;
        }
        int mid=l+r>>1;
        ff(node);
        upd(node<<1,l,mid,l1,r1,x);
        upd(node<<1|1,mid+1,r,l1,r1,x);
        t[node]=max(t[node<<1],t[node<<1|1]);
    }
    int get(int node,int l,int r,int l1,int r1)
    {
        if(l>r1||r<l1) return 0;
        if(l>=l1&&r<=r1) return t[node];
        ff(node);
        int mid=l+r>>1;
        return max(get(node<<1,l,mid,l1,r1),get(node<<1|1,mid+1,r,l1,r1));
    }
} st1;
struct IC
{
    int t[2000001];
    void ff(int x)
    {
        for(int i=x*2; i<=x*2+1; i++)
            t[i]+=t[x];
        t[x]=0;
    }
    void upd(int node,int l,int r,int l1,int r1,int x)
    {
        if(l>r1||r<l1) return;
        if(l>=l1&&r<=r1)
        {
            t[node]+=x;
            return;
        }
        int mid=l+r>>1;
        if(t[node]!=0)
        ff(node);
        upd(node<<1,l,mid,l1,r1,x);
        upd(node<<1|1,mid+1,r,l1,r1,x);
    }
    int get(int node,int l,int r,int l1,int r1)
    {
        if(l>r1||r<l1) return 0;
        if(l>=l1&&r<=r1) return t[node];
        if(t[node]!=0)
        ff(node);
        int mid=l+r>>1;
        return get(node<<1,l,mid,l1,r1)+get(node<<1|1,mid+1,r,l1,r1);
    }
} st2;

/// sort theo a neu ai<bj&(ai-1)<bi (j>i)
/**
sort(l->r)
 check for i:
task1:
a(i-1)<bi
task 2:
min(bi+1,br)>ai
=> bi->ai =0
*/
vector<ic> v2[500002];
vector<ib> v3[500002];
void solve1()
{
    for(int i=1; i<=n; i++)
        b[i]=st1.get(1,1,n,a[i].b,a[i].a)+1,
             st1.upd(1,1,n,a[i].b,a[i].a,i);
}
void solve2()
{
    st1.build(1,1,n);
    for(int i=1; i<=n; i++)
        s3=st1.get(1,1,n,a[i].b,a[i].a),
        v2[b[n-i+1]].pb({n-i+1,n-s3,1}),
        v2[n-i+2].pb({n-i+1,n-s3,-1}),
        st1.upd(1,1,n,a[i].b,a[i].a,i);
}
vector<int> v;
int ans[200001];
void phongbeo()
{
    cin>>n;
    for(int i=1; i<=n; i++) cin>>a[i].a,v.pb(a[i].a);
    sort(v.begin(),v.end());
    for(int i=1; i<=n; i++)  cin>>a[i].b,
            a[i].a=lower_bound(v.begin(),v.end(),a[i].a)-v.begin()+1,
                a[i].b=lower_bound(v.begin(),v.end(),a[i].b)-v.begin()+1;
    solve1();
    reverse(a+1,a+1+n);
    solve2();
    cin>>m;
    for(int i=1; i<=m; i++)
        cin>>l>>r,v3[l].pb({r,i});
    for(int i=1; i<=n; i++)
    {
        for(auto x:v2[i])
                    st2.upd(1,1,n,x.a,x.b,x.c);
        for(auto x:v3[i])
            ans[x.b]=st2.get(1,1,n,x.a,x.a);
    }
    for(int i=1; i<=m; i++)
        if(ans[i]>=1)
            cout<<"No",down
                else cout<<"Yes",down
            }
/**
 10 12 14 16 17
 6 11 13 9 3
 */

Compilation message (stderr)

Main.cpp:46:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   46 | main()
      | ^~~~
Main.cpp: In member function 'void IT::build(int, int, int)':
Main.cpp:67:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   67 |         int mid=l+r>>1;
      |                 ~^~
Main.cpp: In member function 'void IT::upd(int, int, int, int, int, int)':
Main.cpp:87:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   87 |         int mid=l+r>>1;
      |                 ~^~
Main.cpp: In member function 'int IT::get(int, int, int, int, int)':
Main.cpp:98:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   98 |         int mid=l+r>>1;
      |                 ~^~
Main.cpp: In member function 'void IC::upd(int, int, int, int, int, int)':
Main.cpp:119:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  119 |         int mid=l+r>>1;
      |                 ~^~
Main.cpp: In member function 'int IC::get(int, int, int, int, int)':
Main.cpp:131:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  131 |         int mid=l+r>>1;
      |                 ~^~

• Subtask 1: 4 / 4
• Subtask 2: 5 / 5
• Subtask 3: 10 / 10
• Subtask 4: 31 / 31
• Subtask 5: 8 / 8
• Subtask 6: 12 / 12
• Subtask 7: 18 / 18
• Subtask 8: 12 / 12