oj.uz

답안 #892371

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
892371 2023-12-25T09:17:08 Z abcvuitunggio 식물 비교 (IOI20_plants) C++17
0 / 100
 42 ms 6224 KB 
#include "plants.h"
#include <bits/stdc++.h>
using namespace std;
const int INF=1e9;
struct T{
    int mn,pos;
}st[800001];
T operator +(T a, T b){
    return (a.mn>b.mn?b:a);
}
int n,k,lazy[800001],p[200001];
vector <int> a;
void down(int node, int l, int r){
    if (!lazy[node]||l==r)
        return;
    st[node<<1].mn+=lazy[node];
    st[node<<1|1].mn+=lazy[node];
    lazy[node<<1]+=lazy[node];
    lazy[node<<1|1]+=lazy[node];
    lazy[node]=0;
}
void build(int node, int l, int r){
    if (l==r){
        st[node]={a[l],l};
        return;
    }
    int mid=(l+r)>>1;
    build(node<<1,l,mid);
    build(node<<1|1,mid+1,r);
    st[node]=st[node<<1]+st[node<<1|1];
}
void update(int node, int l, int r, int u, int v, int val){
    if (l>v||r<u||u>v)
        return;
    if (l>=u&&r<=v){
        st[node].mn+=val;
        lazy[node]+=val;
        return;
    }
    down(node,l,r);
    int mid=(l+r)>>1;
    update(node<<1,l,mid,u,v,val);
    update(node<<1|1,mid+1,r,u,v,val);
    st[node]=st[node<<1]+st[node<<1|1];
}
T get(int node, int l, int r, int u, int v){
    if (l>v||r<u||u>v)
        return {INF,0};
    if (l>=u&&r<=v)
        return st[node];
    down(node,l,r);
    int mid=(l+r)>>1;
    return get(node<<1,l,mid,u,v)+get(node<<1|1,mid+1,r,u,v);
}
int calc(int j){
    T t={INF,0};
    if (j<k)
        t=get(1,0,n-1,0,j-1)+get(1,0,n-1,n+j-k+1,n-1);
    else
        t=get(1,0,n-1,j-k+1,j-1);
    if (t.mn)
        return -1;
    return t.pos;
}
T get(int l, int r){
    l=(l%n+n)%n;
    r=(r%n+n)%n;
    if (l<=r)
        return get(1,0,n-1,l,r);
    else{
        T t=get(1,0,n-1,l,n-1);
        if (!t.mn)
            return t;
        else
            return get(1,0,n-1,0,r);
    }
}
void init(int K, vector <int> r){
    k=K;
    a=r;
    n=a.size();
    build(1,0,n-1);
    int j=st[1].pos;
    while (true){
        int tmp=calc(j);
        if (tmp==-1)
            break;
        j=tmp;
    }
    p[j]=n-1;
    if (j<k){
        update(1,0,n-1,0,j-1,-1);
        update(1,0,n-1,n+j-k+1,n-1,-1);
    }
    else
        update(1,0,n-1,j-k+1,j-1,-1);
    update(1,0,n-1,j,j,INF);
    for (int i=n-2;i;i--){
        j=get(j-k,j+k).pos;
        while (true){
            int tmp=calc(j);
            if (tmp==-1)
                break;
            j=tmp;
        }
        p[j]=i;
        if (j<k){
            update(1,0,n-1,0,j-1,-1);
            update(1,0,n-1,n+j-k+1,n-1,-1);
        }
        else
            update(1,0,n-1,j-k+1,j-1,-1);
        update(1,0,n-1,j,j,INF);
    }
}
int compare_plants(int x, int y){
	return (p[x]>p[y]?1:(p[x]<p[y]?-1:0));
}

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Incorrect 1 ms 2396 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Incorrect 1 ms 2396 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Incorrect 1 ms 2396 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Incorrect 42 ms 6224 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Incorrect 0 ms 2396 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Incorrect 1 ms 2396 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Incorrect 1 ms 2396 KB Output isn't correct
5 Halted 0 ms 0 KB -