Submission #1230929

#	Time	Username	Problem	Language	Result	Execution time	Memory
1230929		vivkostov	Examination (JOI19_examination)	C++20	0 / 100	130 ms	52588 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;
stud a[100005];
query b[100005];
cell p[2000005];
cell2 p2[80000005];
void update2(int l,int r,int q,int h)
{
    if(l==r)
    {
        p2[h].st++;
        return;
    }
    mid=l/2+r/2+(l%2+r%2)/2;
    if(mid>=q)
    {
        if(!p2[h].l)
        {
            br++;
            p2[h].l=br;
        }
        update2(l,mid,q,p2[h].l);
    }
    else
    {
        if(!p2[h].r)
        {
            br++;
            p2[h].r=br;
        }
        update2(mid+1,r,q,p2[h].r);
    }
    p2[h].st=p2[p2[h].l].st+p2[p2[h].r].st;
}
void update1(int l,int r,int q,int h,int st)
{
    if(!p[h].in)
    {
        br++;
        p[h].in=br;
    }
    update2(0,maxn,st,p[h].in);
    if(l==r)return;
    mid=l/2+r/2+(l%2+r%2)/2;
    if(mid>=q)
    {
        if(!p[h].l)
        {
            br++;
            p[h].l=br;
        }
        update1(l,mid,q,p[h].l,st);
    }
    else
    {
        if(!p[h].r)
        {
            br++;
            p[h].r=br;
        }
        update1(mid+1,r,q,p[h].r,st);
    }
}
int sum2(int l,int r,int ql,int qr,int h)
{
    if(l>=ql)return p2[h].st;
    mid=l/2+r/2+(l%2+r%2)/2;
    int g=0;
    if(p2[h].r)g=sum2(mid+1,r,ql,qr,p2[h].r);
    mid=l/2+r/2+(l%2+r%2)/2;
    if(p2[h].l&&mid>=ql)g+=sum2(l,mid,ql,qr,p2[h].l);
    return g;
}
int sum1(int l,int r,int ql,int qr,int h,int st)
{
    if(!p[h].in)return 0;
    if(l>=ql)return sum2(0,maxn,st,maxn,p[h].in);
    mid=l/2+r/2+(l%2+r%2)/2;
    int g=0;
    if(p[h].r)g=sum1(mid+1,r,ql,qr,p[h].r,st);
    mid=l/2+r/2+(l%2+r%2)/2;
    if(p[h].l&&mid>=ql)g+=sum1(l,mid,ql,qr,p[h].l,st);
    return g;
}
void resh()
{
    int pos=1;
    for(int i=1;i<=n;i++)
    {
        while(pos<=n&&a[pos].a>=b[i].x)
        {
            update1(0,maxn/2,a[pos].b,1,a[pos].a+a[pos].b);
            pos++;
        }
        otg[b[i].ind]=sum1(0,maxn/2,b[i].y,maxn/2,1,b[i].z);
    }
    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: 0 / 20
• Subtask 3: 0 / 21
• Subtask 4: 0 / 57