Submission #1064188

#	Time	Username	Problem	Language	Result	Execution time	Memory
1064188		BABY_GANGSTER	Flooding Wall (BOI24_wall)	C++14	0 / 100	1 ms	604 KiB

Main

//https://www.instagram.com/_modwwe/
#pragma GCC optimize("Ofast,unroll-loops")
#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=1e9;
const int mod2=1e9+7;
const int  mod1=998244353;
struct icd
{
    long double a;
    int 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;

};

int n,m,s1,s2,s4,s3,sf,k,s5,s6,mx,s7,s8,s9,mx2,res,dem2=0,dem=0,s33,dem3,l,r,mid;
int  i,s10,s12;
int kk;
int el=29;

main()
{
#ifndef ONLINE_JUDGE
//fin(task),fou(task);
#endif
    NHP
    /// cin>>s1;
    //  modwwe
    phongbeo();
}
ic mer(ic a,ic b)
{
     return {a.a+b.a,a.b+b.b,a.c+b.c};
}
vector<int> v;
struct IT
{
    ic t[4000001];
    int t2[4000001];
    int t3[4000001];
    void build(int node,int l,int r)
    {
         t2[node]=1;
         t3[node]=0;
         t[node]={0,0,0};
          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++)
        {
            if(t2[i]==0) continue;
            t[i].c*=t2[x];
            t[i].c%=mod2;
            t[i].a=t[i].a-t3[x]*t[i].b+t[i].c;
            t[i].b=t[i].b*t2[x];
            t3[i]+=t3[x]*t2[i];
            t2[i]*=t2[x];
            t[i].a%=mod2;
            t[i].b%=mod2;
            t2[i]%=mod2;
        }
        t2[x]=1;
        t3[x]=0;
    }
    void upd5(int node,int l,int r,int l1,int r1,int x)
    {
        if(l>r1||r<l1||t2[node]==0)
            return;
        if(l>=l1&&r<=r1)
        {
            t2[node]=t2[node]*2%mod2;
            t3[node]+=x;
            t3[node]%=mod2;
            t[node].c=t[node].c*2%mod2;
            t[node].a=t[node].a*2;
            t[node].a=t[node].a-x*t[node].b+t[node].c;
            t[node].a%=mod2;
            t[node].b=t[node].b*2%mod2;
            return;
        }
        if(t3[node]!=0) ff(node);
        int mid=l+r>>1;
        upd5(node<<1,l,mid,l1,r1,x);
        upd5(node<<1|1,mid+1,r,l1,r1,x);
        t[node]=mer(t[node<<1],t[node<<1|1]);
    }
    void upd(int node,int l,int r,int l1,int r1,int x)
    {
        if(l>r1||r<l1||t2[node]==0)
            return;
        if(l>=l1&&r<=r1)
        {
            t2[node]=t2[node]*2%mod2;
            t3[node]+=x;
            t3[node]%=mod2;
            t[node].c=t[node].c*2%mod2;
                        t[node].a=t[node].a*2;
            t[node].a=t[node].a-x*t[node].b+t[node].c;
            t[node].a%=mod2;
            t[node].b=t[node].b*2%mod2;
            return;
        }
        if(t3[node]!=0) ff(node);
        int mid=l+r>>1;
        upd(node<<1,l,mid,l1,r1,x);
        upd(node<<1|1,mid+1,r,l1,r1,x);
        t[node]=mer(t[node<<1],t[node<<1|1]);
    }
    void upd4(int node,int l,int r,int l1,int r1,int x)
    {
        if(l>r1||r<l1||t2[node]==0)return;
        if(l>=l1&&r<=r1)
        {
            t[node].a=t[node].a+t[node].c-x*t[node].b;
            t[node].a%=mod2;
            t3[node]+=x;
            t3[node]%=mod2;
            return;
        }
                if(t3[node]!=0)  ff(node);
        int mid=l+r>>1;
        upd4(node<<1,l,mid,l1,r1,x);
        upd4(node<<1|1,mid+1,r,l1,r1,x);
        t[node]=mer(t[node<<1],t[node<<1|1]);
    }
    void upd2(int node,int l,int r,int l1,ib x)
    {
        if(t2[node]==0) return;
        if(l==r)
        {
            t[node].a+=x.a;
            t[node].c+=x.b*v[l-1];
            t[node].b+=x.b;
            return;
        }
                if(t3[node]!=0)  ff(node);
        int mid=l+r>>1;
        if(l1<=mid)upd2(node<<1,l,mid,l1,x);
        else upd2(node<<1|1,mid+1,r,l1,x);
        t[node]=mer(t[node<<1],t[node<<1|1]);

    }
    void upd3(int node,int l,int r,int l1,int r1)
    {
        if(l>r1||r<l1||t2[node]==0) return;
        if(l>=l1&&r<=r1)
        {
            t2[i]=0;
            t[node]= {0,0,0};
            return;
        }
        int mid=l+r>>1;
        if(t3[node]!=0)  ff(node);
        upd3(node<<1,l,mid,l1,r1);
        upd3(node<<1|1,mid+1,r,l1,r1);
        t[node]=mer(t[node<<1],t[node<<1|1]);
    }
    ic get(int node,int l,int r,int l1,int r1)
    {
        if(l>r1||r<l1||t2[node]==0) return{0,0,0};
        if(l>=l1&&r<=r1)return t[node];
        if(t3[node]!=0) ff(node);
        int mid=l+r>>1;
        return mer(get(node<<1,l,mid,l1,r1),get(node<<1|1,mid+1,r,l1,r1));
    }
}st;
ib a[500001];
struct cc{
ic a,b;
}c[500001];
void phongbeo()
{
    cin>>n;
    for(int i=1; i<=n; i++)
        cin>>a[i].a,v.pb(a[i].a);
    for(int i=1; i<=n; i++)
        cin>>a[i].b,v.pb(a[i].b);
        sort(v.begin(),v.end());
        v.erase(unique(v.begin(), v.end()), v.end());
 m=v.size();
 for(int i=1;i<=n;i++)
 {
      if(a[i].a>a[i].b) swap(a[i].a,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;
 }
  st.build(1,1,m);
 st.upd2(1,1,m,a[n].a,{0,1});
st.upd2(1,1,m,a[n].b,{0,1});
c[n].a.b=1;
c[n].b.b=1;
 for(int i=n-1;i>=1;--i)
 {
     ic x=st.get(1,1,m,1,a[i].a-1);
     ic x2=st.get(1,1,m,1,a[i].b-1);
  c[i].a=x;
     c[i].b=x2;
st.upd3(1,1,m,1,a[i].a-1);
st.upd4(1,1,m,a[i].a,a[i].b-1,v[a[i].a-1]);
st.upd(1,1,m,a[i].b,m,v[a[i].a-1]+v[a[i].b-1]);
st.upd2(1,1,m,a[i].a,{x.a,x.b});
st.upd2(1,1,m,a[i].b,{x2.a,x2.b});
 }
 st.build(1,1,m);
 for(int i=0;i<=n-1;i++)
 {
 if(i==0)s4=(s4+c[1].a.a+c[1].b.a)%mod2;
 else
 {
      if(i==1){st.upd2(1,1,m,a[1].a,{0,1});
                st.upd2(1,1,m,a[1].b,{0,1});
       }
       else
       {
           ic x=st.get(1,1,m,1,a[i].a-1);
     ic x2=st.get(1,1,m,1,a[i].b-1);
st.upd3(1,1,m,1,a[i].a-1);
st.upd4(1,1,m,a[i].a,a[i].b-1,v[a[i].a-1]);
st.upd(1,1,m,a[i].b,m,v[a[i].a-1]+v[a[i].b-1]);
st.upd2(1,1,m,a[i].a,{x.a,x.b});
st.upd2(1,1,m,a[i].b,{x2.a,x2.b});
       }

    ic x=st.get(1,1,m,a[i].a,a[i].a);
    ic x2=st.get(1,1,m,a[i].b,a[i].b);
    if(a[i+1].a>=a[i].a)
    {
        s4=(s4+c[i+1].a.a*x.b+x.a*c[i+1].a.b)%mod2;
    }
    if(a[i+1].b>=a[i].a)
    {
        s4=(s4+c[i+1].b.a*x.b+x.a*c[i+1].b.b)%mod2;
    }
    if(a[i+1].a>=a[i].b)
    {
        s4=(s4+c[i+1].a.a*x2.b+x2.a*c[i+1].a.b)%mod2;
    }
    if(a[i+1].b>=a[i].b)
    {
        s4=(s4+c[i+1].b.a*x2.b+x2.a*c[i+1].b.b)%mod2;
    }
 }
 }
cout<<s4;
}

Compilation message (stderr)

Main.cpp:51:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   51 | main()
      | ^~~~
Main.cpp: In member function 'void IT::build(long long int, long long int, long long int)':
Main.cpp:77:10: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   77 | int mid=l+r>>1;
      |         ~^~
Main.cpp: In member function 'void IT::upd5(long long int, long long int, long long int, long long int, long long int, long long int)':
Main.cpp:117:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  117 |         int mid=l+r>>1;
      |                 ~^~
Main.cpp: In member function 'void IT::upd(long long int, long long int, long long int, long long int, long long int, long long int)':
Main.cpp:139:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  139 |         int mid=l+r>>1;
      |                 ~^~
Main.cpp: In member function 'void IT::upd4(long long int, long long int, long long int, long long int, long long int, long long int)':
Main.cpp:156:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  156 |         int mid=l+r>>1;
      |                 ~^~
Main.cpp: In member function 'void IT::upd2(long long int, long long int, long long int, long long int, ib)':
Main.cpp:172:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  172 |         int mid=l+r>>1;
      |                 ~^~
Main.cpp: In member function 'void IT::upd3(long long int, long long int, long long int, long long int, long long int)':
Main.cpp:187:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  187 |         int mid=l+r>>1;
      |                 ~^~
Main.cpp: In member function 'ic IT::get(long long int, long long int, long long int, long long int, long long int)':
Main.cpp:198:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  198 |         int mid=l+r>>1;
      |                 ~^~
Main.cpp: In function 'void phongbeo()':
Main.cpp:211:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  211 |     for(int i=1; i<=n; i++)
      |     ^~~
Main.cpp:213:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  213 |         sort(v.begin(),v.end());
      |         ^~~~

• Subtask 1: 0 / 8
• Subtask 2: 0 / 17
• Subtask 3: 0 / 19
• Subtask 4: 0 / 14
• Subtask 5: 0 / 12
• Subtask 6: 0 / 30