Submission #1012790

#	Time	Username	Problem	Language	Result	Execution time	Memory
1012790		modwwe	Two Antennas (JOI19_antennas)	C++17	100 / 100	305 ms	59172 KiB

antennas

//https://www.instagram.com/_modwwe/
#pragma GCC optimize("Ofast,unroll-loops")
//#pragma GCC target("avx2,bmi,bmi2")
#include<bits/stdc++.h>
#define int long long
//#define ll long long
#define down cout<<'\n';
#define debug cout<<" cucuucucuuu",down
#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 inf=1e18;
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
}
vector<int> v[200007],v2[200007];
vector<ib> v3[200007];
int ans[200001];
struct lz{
 int b,c;
 };
 int a[200001];
 ib b[200001];
struct IT
{ ic t[800001];
 lz lazy[800001];
     void build(int node,int l,int r)
      { t[node]={-1,-inf,inf};
      lazy[node]={inf,-inf};
          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].a=max({t[i].a,lazy[x].c-t[i].c,t[i].b-lazy[x].b});
             lazy[i].b=min(lazy[i].b,lazy[x].b);
              lazy[i].c=max(lazy[i].c,lazy[x].c);
           }
           lazy[x]={inf,-inf};
      }
      void upd(int node,int l,int r,int l1,int c)
       { ///if(l1==2) cout<<l<<" "<<r<<" "<<c<<" "<<t[node].a,down
            if(l==r)
            {
               if(!c)t[node]={t[node].a,-inf,inf};
                else t[node]={t[node].a,a[l],a[l]};
                ///if(l1==2) cout<<t[node].a<<" cucu",down
                return;
            }
            int mid=l+r>>1;
             ff(node);
        if(l1<=mid) upd(node<<1,l,mid,l1,c);
        else upd(node<<1|1,mid+1,r,l1,c);
         t[node].b=max(t[node<<1].b,t[node<<1|1].b);
          t[node].c=min(t[node<<1].c,t[node<<1|1].c);
          t[node].a=max(t[node<<1].a,t[node<<1|1].a);
        }
        void upd2(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].a=max({t[node].a,x-t[node].c,t[node].b-x});
                   lazy[node].b=min(lazy[node].b,x);
                    lazy[node].c=max(lazy[node].c,x);
                    return;
              }
              ff(node);
              int mid=l+r>>1;
              upd2(node<<1,l,mid,l1,r1,x);
              upd2(node<<1|1,mid+1,r,l1,r1,x);
          t[node].a=max(t[node<<1].a,t[node<<1|1].a);
        }
        int get(int node,int l,int r,int l1,int r1)
         {
             if(l>r1||r<l1) return -1;
              if(l>=l1&&r<=r1) return t[node].a;
               int mid=l+r>>1;
               ff(node);
               return max(get(node<<1,l,mid,l1,r1),get(node<<1|1,mid+1,r,l1,r1));
         }
}st;
void phongbeo()
 {
     cin>>n;
     for(int i=1;i<=n;i++)
     {
          cin>>a[i]>>l>>r;
          if(i+l<=n) v[i+l].pb(i);
             if(i+r+1<=n)v2[r+i+1].pb(i);
            b[i]={l,r};
     }
    cin>>m;
     for(int i=1;i<=m;i++)
     {
          cin>>l>>r;
          v3[r].pb({l,i});
     }
         st.build(1,1,n);

      for(int i=1;i<=n;i++)
      {
     for(auto x:v[i])
     {
        st.upd(1,1,n,x,1);
     }
     for(auto x:v2[i])
     {
      st.upd(1,1,n,x,0);
     }

           if(i-b[i].a>=1){
             st.upd2(1,1,n,max(1ll,i-b[i].b),i-b[i].a,a[i]);
             }
             for(auto x:v3[i])
             ans[x.b]=st.get(1,1,n,x.a,i);
      }
      for(int i=1;i<=m;i++)
        cout<<ans[i],down
 }

Compilation message (stderr)

antennas.cpp:48:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   48 | main()
      | ^~~~
antennas.cpp: In member function 'void IT::build(long long int, long long int, long long int)':
antennas.cpp:73:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   73 |            int mid=l+r>>1;
      |                    ~^~
antennas.cpp: In member function 'void IT::upd(long long int, long long int, long long int, long long int, long long int)':
antennas.cpp:96:22: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   96 |             int mid=l+r>>1;
      |                     ~^~
antennas.cpp: In member function 'void IT::upd2(long long int, long long int, long long int, long long int, long long int, long long int)':
antennas.cpp:115:24: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  115 |               int mid=l+r>>1;
      |                       ~^~
antennas.cpp: In member function 'long long int IT::get(long long int, long long int, long long int, long long int, long long int)':
antennas.cpp:124:25: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  124 |                int mid=l+r>>1;
      |                        ~^~

• Subtask 1: 2 / 2
• Subtask 2: 11 / 11
• Subtask 3: 22 / 22
• Subtask 4: 65 / 65