Submission #12698

#	Time	Username	Problem	Language	Result	Execution time	Memory
12698		dohyun0324	Holiday (IOI14_holiday)	C++98	0 / 100	0 ms	65536 KiB

holiday

#include"holiday.h"
#include<string.h>
#include<algorithm>
using namespace std;
int s,t=1,pos[100010],k,e[21],p2[300010];
long long dap,r1[300010],l1[300010],r2[300010],l2[300010],p[300010];
struct data{
    int x,y;
    bool operator<(const data&r)const{
        return x>r.x;
    }
}a[100010];
struct data2{
    int num;
    long long sum;
}tree[21][300010];
void update(int lev,int x){
    int p=x+t-1;
    while(p>0){
        tree[lev][p].num++; tree[lev][p].sum+=a[x].x;
        p/=2;
    }
}
void finding(int lev,int x,int y,int k,int num){
    if(x==y){s=x-1; return;}
    if(num-tree[lev][k*2].num>=0)
    {
        finding(lev,(x+y)/2+1,y,k*2+1,num-tree[lev][k*2].num);
    }
    else finding(lev,x,(x+y)/2,k*2,num);
}
long long query(int lev,int x,int y,int k,int s,int e){
    if(s<=x && y<=e) return tree[lev][k].sum;
    if(s>y || e<x) return 0;
    return query(lev,x,(x+y)/2,k*2,s,e)+query(lev,(x+y)/2+1,y,k*2+1,s,e);
}
void gap(int m,int x,int y,int lev,int sw){
    int i,ps=0;
    long long maxi=0;
    for(i=e[lev]+1;i<x;i++) update(lev,pos[i]);
    for(i=x;i<=y;i++)
    {
        if(tree[lev][pos[i]+t-1].num==0) update(lev,pos[i]);
        if(sw==1) finding(lev,1,t,1,m-(i-1));
        else finding(lev,1,t,1,m-(i-1)*2);
        if(maxi<query(lev,1,t,1,1,s))
        {
            maxi=query(lev,1,t,1,1,s);
            ps=i;
        }
    }
    e[lev]=y;
    p[m]=maxi; p2[m]=ps;
}
void pro(int m1,int m2,int x,int y,int lev,int sw){
    int m=(m1+m2)/2;
    gap(m,x,y,lev,sw);
    if(m1==m2 || p2[m]==0) return;
    pro(m1,(m1+m2)/2,x,p2[m],lev+1,sw);
    pro((m1+m2)/2+1,m2,p2[m],y,lev+1,sw);
}
void init(){
    int i;
    for(i=0;i<=20;i++) e[i]=1;
    memset(tree,0,sizeof tree);
}
long long int findMaxAttraction(int n, int start, int d, int attraction[])
{
    int i;
    for(i=start;i>=0;i--) a[start-i+1].x=attraction[i], a[start-i+1].y=start-i+1;
    for(i=1;;i++){if(t>=start+1) break; t*=2;}
    sort(a+1,a+start+2);
    for(i=1;i<=(start+1);i++) pos[a[i].y]=i;
    init(); pro(1,start*3,2,start+1,0,1);
    for(i=1;i<=start*3;i++) l1[i]=p[i];
    init(); pro(1,start*3,2,start+1,0,2);
    for(i=1;i<=start*3;i++) l2[i]=p[i];
    for(i=start;i<n;i++) a[i-start+1].x=attraction[i], a[i-start+1].y=i-start+1;
    t=1; for(i=1;;i++){if(t>=n-start) break; t*=2;}
    sort(a+1,a+n-start+1);
    for(i=1;i<=n-start;i++) pos[a[i].y]=i;
    init(); pro(1,(n-start-1)*3,2,n-start,0,1);
    for(i=1;i<=(n-start-1)*3;i++) r1[i]=p[i];
    init(); pro(1,start*3,2,start+1,0,2);
    for(i=1;i<=(n-start-1)*3;i++) r2[i]=p[i];
    for(i=0;i<=d;i++){
        if(dap<l1[i]+r2[d-i]) dap=l1[i]+r2[d-i];
        if(dap<l2[i]+r1[d-i]) dap=l2[i]+r1[d-i];
        if(i>=1 && dap<l1[i-1]+r2[d-i]+attraction[start]) dap=l1[i-1]+r2[d-i]+attraction[start];
        if(i>=1 && dap<l2[i-1]+r1[d-i]+attraction[start]) dap=l2[i-1]+r1[d-i]+attraction[start];
    }
    return dap;
}

• Subtask 1: 0 / 7
• Subtask 2: 0 / 23
• Subtask 3: 0 / 17
• Subtask 4: 0 / 53