oj.uz

답안 #305419

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
305419 2020-09-23T03:37:41 Z baluteshih 식물 비교 (IOI20_plants) C++14
59 / 100
 1162 ms 14476 KB 
#include "plants.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
#define X first
#define Y second
#define ALL(v) v.begin(),v.end()
#define SZ(a) ((int)a.size())
#define pb push_back
 
int seg1[800005],seg2[800005],lazy1[800005],lazy2[800005];
int layer[400005],tag[200005];
 
void build(int l,int r,int rt,const vector<int> &v,int *seg)
{
    if(l==r)
        return seg[rt]=v[l],void();
    int mid=(l+r)>>1;
    build(l,mid,rt<<1,v,seg),build(mid+1,r,rt<<1|1,v,seg);
    seg[rt]=min(seg[rt<<1],seg[rt<<1|1]);
}
 
void down(int rt,int *seg,int *lazy)
{
    if(lazy[rt])
    {
        seg[rt<<1]+=lazy[rt],lazy[rt<<1]+=lazy[rt];
        seg[rt<<1|1]+=lazy[rt],lazy[rt<<1|1]+=lazy[rt];
        lazy[rt]=0;
    }
}
 
void modify(int L,int R,int l,int r,int rt,int val,int *seg,int *lazy)
{
    if(l!=r) down(rt,seg,lazy);
    if(L<=l&&R>=r)
        return lazy[rt]+=val,seg[rt]+=val,void();
    int mid=(l+r)>>1;
    if(L<=mid)
        modify(L,R,l,mid,rt<<1,val,seg,lazy);
    if(R>mid)
        modify(L,R,mid+1,r,rt<<1|1,val,seg,lazy);
    seg[rt]=min(seg[rt<<1],seg[rt<<1|1]);
}
 
int query(int l,int r,int rt,int *seg,int *lazy)
{
    if(l!=r) down(rt,seg,lazy);
    if(l==r)
        return l;
    int mid=(l+r)>>1;
    if(seg[rt<<1]<=seg[rt<<1|1])
        return query(l,mid,rt<<1,seg,lazy);
    return query(mid+1,r,rt<<1|1,seg,lazy);
}
 
void dfs(int l,int r,int rt,int *seg,int *lazy,vector<int> &rst)
{
    if(l!=r) down(rt,seg,lazy);
    if(l==r)
        return rst.pb(l);
    int mid=(l+r)>>1;
    if(seg[rt<<1]==0)
        dfs(l,mid,rt<<1,seg,lazy,rst);
    if(seg[rt<<1|1]==0)
        dfs(mid+1,r,rt<<1|1,seg,lazy,rst);
}
 
const int INF=1e9;
int arr[200005],K,n;
 
void init(int k, vector<int> r)
{
    n=SZ(r),K=k;
	build(0,n-1,1,r,seg1),build(0,n-1,1,vector<int>(n,INF),seg2);
    for(int i=0,ly=0;i<n;++ly)
    {
        while(seg1[1]==0)
        {
            int u=query(0,n-1,1,seg1,lazy1);
            modify(u,u,0,n-1,1,INF,seg1,lazy1),modify(u,u,0,n-1,1,-INF,seg2,lazy2);
            if(u+k<=n)
                modify(u+1,u+k-1,0,n-1,1,1,seg2,lazy2);
            else
            {
                if(u<n-1)
                    modify(u+1,n-1,0,n-1,1,1,seg2,lazy2);
                modify(0,k-n+u-1,0,n-1,1,1,seg2,lazy2);
            }
        }
        vector<int> rst;
        dfs(0,n-1,1,seg2,lazy2,rst);
        for(int u:rst)
        {
            if(u>=k-1)
                modify(u-k+1,u,0,n-1,1,-1,seg1,lazy1);
            else
                modify(0,u,0,n-1,1,-1,seg1,lazy1),modify(n-(k-u-1),n-1,0,n-1,1,-1,seg1,lazy1);
            if(u+k<=n)
                modify(u+1,u+k-1,0,n-1,1,-1,seg2,lazy2);
            else
            {
                if(u<n-1)
                    modify(u+1,n-1,0,n-1,1,-1,seg2,lazy2);
                modify(0,k-n+u-1,0,n-1,1,-1,seg2,lazy2);
            }
            modify(u,u,0,n-1,1,INF,seg2,lazy2);
            layer[u]=ly;
        }
        i+=SZ(rst);
    }
    layer[n]=layer[0];
    deque<int> dq(1,0);
    for(int i=1;i<n;++i)
    {
        if(dq.front()==i-k)
            dq.pop_front();
        if(dq.empty())
            break;
        if(layer[dq.front()]<layer[i])
        {
            tag[i]=1;
            while(!dq.empty()&&layer[dq.back()]>=layer[i])
                dq.pop_back();
            dq.pb(i);
        }
    }
    dq.clear(),dq.pb(n);
    for(int i=n-1;i>0;--i)
    {
        if(dq.front()==i+k)
            dq.pop_front();
        if(dq.empty())
            break;
        if(layer[dq.front()]<layer[i])
        {
            tag[i]=1;
            while(!dq.empty()&&layer[dq.back()]>=layer[i])
                dq.pop_back();
            dq.pb(i); 
        }
    }
    dq.clear(),dq.pb(0);
    for(int i=1;i<n;++i)
    {
        if(dq.front()==i-k)
            dq.pop_front();
        if(dq.empty())
            break;
        if(layer[dq.front()]>layer[i])
        {
            tag[i]=-1;
            while(!dq.empty()&&layer[dq.back()]<=layer[i])
                dq.pop_back();
            dq.pb(i);
        }
    }
    dq.clear(),dq.pb(n);
    for(int i=n-1;i>0;--i)
    {
        if(dq.front()==i+k)
            dq.pop_front();
        if(dq.empty())
            break;
        if(layer[dq.front()]>layer[i])
        {
            tag[i]=-1;
            while(!dq.empty()&&layer[dq.back()]<=layer[i])
                dq.pop_back();
            dq.pb(i); 
        }
    }
    /*for(int i=0;i<n;++i)
        cout << layer[i] << " \n"[i+1==n];
    for(int i=0;i<n;++i)
        cout << "[" << L[i] << "," << R[i] << "]" << " \n"[i+1==n];*/
}
 
int compare_plants(int x, int y)
{
    if(layer[x]==layer[y]) return 0;
    if(x==0)
        return tag[y];
    else
        return layer[x]<layer[y]?1:-1;
}

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Incorrect 0 ms 384 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 90 ms 3644 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 5 ms 640 KB Output is correct
10 Correct 87 ms 3576 KB Output is correct
11 Correct 85 ms 3492 KB Output is correct
12 Correct 85 ms 3704 KB Output is correct
13 Correct 89 ms 3576 KB Output is correct

Subtask #3
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 90 ms 3644 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 5 ms 640 KB Output is correct
10 Correct 87 ms 3576 KB Output is correct
11 Correct 85 ms 3492 KB Output is correct
12 Correct 85 ms 3704 KB Output is correct
13 Correct 89 ms 3576 KB Output is correct
14 Correct 151 ms 4596 KB Output is correct
15 Correct 1120 ms 14184 KB Output is correct
16 Correct 149 ms 4572 KB Output is correct
17 Correct 1118 ms 14088 KB Output is correct
18 Correct 783 ms 14476 KB Output is correct
19 Correct 773 ms 14440 KB Output is correct
20 Correct 996 ms 14056 KB Output is correct

Subtask #4
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 78 ms 3320 KB Output is correct
4 Correct 559 ms 13928 KB Output is correct
5 Correct 689 ms 14148 KB Output is correct
6 Correct 907 ms 14184 KB Output is correct
7 Correct 1066 ms 14056 KB Output is correct
8 Correct 1162 ms 14100 KB Output is correct
9 Correct 603 ms 13500 KB Output is correct
10 Correct 612 ms 14060 KB Output is correct
11 Correct 519 ms 12964 KB Output is correct
12 Correct 724 ms 14180 KB Output is correct
13 Correct 846 ms 14400 KB Output is correct

Subtask #5
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Incorrect 1 ms 384 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #6
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 810 ms 13416 KB Output is correct
7 Correct 925 ms 14056 KB Output is correct
8 Correct 1022 ms 14212 KB Output is correct
9 Correct 1085 ms 14184 KB Output is correct
10 Correct 570 ms 13420 KB Output is correct
11 Correct 891 ms 14236 KB Output is correct
12 Correct 540 ms 14056 KB Output is correct
13 Correct 652 ms 14068 KB Output is correct
14 Correct 896 ms 14180 KB Output is correct
15 Correct 1018 ms 14180 KB Output is correct
16 Correct 566 ms 14056 KB Output is correct
17 Correct 668 ms 13796 KB Output is correct

Subtask #7
0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Incorrect 0 ms 384 KB Output isn't correct
5 Halted 0 ms 0 KB -