Submission #1231016

#	Time	Username	Problem	Language	Result	Execution time	Memory
1231016		vivkostov	Examination (JOI19_examination)	C++20	20 / 100	1400 ms	431532 KiB

examination

#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
void speed()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
}
const int maxn=1e9*2;
struct stud
{
    int a,b;
};
bool cmp(stud a1,stud a2)
{
    return a1.a>a2.a;
}
struct query
{
    int x,y,z,ind;
};
bool cmp2(query a1,query a2)
{
    return a1.x>a2.x;
}
struct cell
{
    int l,r,in;
};
struct cell2
{
    int l,r,st;
};
int n,q,br=1,otg[100005],mid,q1,q2,ot,now,now2;
stud a[100005];
query b[100005];
cell p[50000005];
cell2 p2[100000005];
map<int,int>ma;
void update2(int l,int r)
{
    mid=l/2+r/2+(l%2+r%2)/2;
    p2[now].st++;
    if(mid>=q2)
    {
        if(r-l==1)
        {
            ma[l]++;
            return;
        }
        if(!p2[now].l)
        {
            br++;
            p2[now].l=br;
        }
        now=p2[now].l;
        update2(l,mid);
    }
    else
    {
        if(r-l<=2)
        {
            ma[r]++;
            return;
        }
        if(!p2[now].r)
        {
            br++;
            p2[now].r=br;
        }
        now=p2[now].r;
        update2(mid+1,r);
    }
}
void update1(int l,int r)
{
    if(!p[now2].in)
    {
        br++;
        p[now2].in=br;
    }
    now=p[now2].in;
    update2(0,maxn);
    if(l==r)return;
    mid=l/2+r/2+(l%2+r%2)/2;
    if(mid>=q1)
    {
        if(!p[now2].l)
        {
            br++;
            p[now2].l=br;
        }
        now2=p[now2].l;
        update1(l,mid);
    }
    else
    {
        if(!p[now2].r)
        {
            br++;
            p[now2].r=br;
        }
        now2=p[now2].r;
        update1(mid+1,r);
    }
}
void sum2(int l,int r,int h)
{
    if(l>=q2)
    {
        ot+=p2[h].st;
        return;
    }
    mid=l/2+r/2+(l%2+r%2)/2;
    if(r-l<=2)
    {
        ot+=ma[r];
        if(r-l==1)return;
    }
    if(p2[h].r)sum2(mid+1,r,p2[h].r);
    mid=l/2+r/2+(l%2+r%2)/2;
    if(p2[h].l&&mid>=q2)
    {
        sum2(l,mid,p2[h].l);
    }
}
void sum1(int l,int r,int h)
{
    if(!p[h].in)return;
    if(l>=q1)
    {
        sum2(0,maxn,p[h].in);
        return;
    }
    mid=l/2+r/2+(l%2+r%2)/2;
    if(p[h].r)sum1(mid+1,r,p[h].r);
    mid=l/2+r/2+(l%2+r%2)/2;
    if(p[h].l&&mid>=q1)sum1(l,mid,p[h].l);
}
void resh()
{
    int pos=1;
    for(int i=1;i<=n;i++)
    {
        while(pos<=n&&a[pos].a>=b[i].x)
        {
            q1=a[pos].b;
            q2=a[pos].a+a[pos].b;
            now2=1;
            update1(0,maxn/2);
            pos++;
        }
        q1=b[i].y;
        q2=b[i].z;
        ot=0;
        sum1(0,maxn/2,1);
        otg[b[i].ind]=ot;
    }
    for(int i=1;i<=q;i++)
    {
        cout<<otg[i]<<endl;
    }
}
void read()
{
    cin>>n>>q;
    for(int i=1;i<=n;i++)
    {
        cin>>a[i].a>>a[i].b;
    }
    for(int i=1;i<=q;i++)
    {
        cin>>b[i].x>>b[i].y>>b[i].z;
        b[i].ind=i;
    }
    sort(a+1,a+n+1,cmp);
    sort(b+1,b+q+1,cmp2);
    resh();
}
int main()
{
    speed();
    read();
    return 0;
}

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