oj.uz

Submission #1008699

# Submission time Handle Problem Language Result Execution time Memory
1008699 2024-06-26T16:46:58 Z bachhoangxuan Comparing Plants (IOI20_plants) C++17
30 / 100
 510 ms 98880 KB 
#include "plants.h"
#include<bits/stdc++.h>
using namespace std;
const int maxn = 2e5+5;
const int maxl = 20;
const int inf = 1e9;
int n,k;
vector<int> R,H;
set<int> ss,cc;
int lt[maxn][maxl],rt[maxn][maxl];

void cal(int x,int y){
    cc.erase(y);
    if((y-x+n)%n>=k){
        cc.insert(y);
    }
}
void add(int x){
    if(ss.empty()){
        ss.insert(x);
        cc.insert(x);
        return;
    }
    auto it=ss.lower_bound(x);
    if(it!=ss.end()) cal(x,*it);
    else cal(x,*ss.begin());
    if(it==ss.begin()) cal(*ss.rbegin(),x);
    else{
        it--;
        cal(*it,x);
    }
    ss.insert(x);
}
void del(int x){
    cc.erase(x);ss.erase(x);
    if(ss.empty()) return;
    auto it=ss.lower_bound(x);
    int y=(it!=ss.end()?*it:*ss.begin());
    cc.insert(y);
}

int tree[4*maxn],lazy[4*maxn];
void build(int l,int r,int id){
    lazy[id]=0;
    if(l==r){
        tree[id]=R[l];
        return;
    }
    int mid=(l+r)>>1;
    build(l,mid,id<<1);build(mid+1,r,id<<1|1);
    tree[id]=min(tree[id<<1],tree[id<<1|1]);
}
void getnew(int id,int val){
    tree[id]-=val;
    lazy[id]+=val;
}
void pushdown(int id){
    if(!lazy[id]) return;
    getnew(id<<1,lazy[id]);
    getnew(id<<1|1,lazy[id]);
    lazy[id]=0;
}
void get(int l,int r,int id){
    if(tree[id]>0) return;
    if(l==r){
        tree[id]=inf;
        add(l);
        return;
    }
    pushdown(id);
    int mid=(l+r)>>1;
    get(l,mid,id<<1);get(mid+1,r,id<<1|1);
    tree[id]=min(tree[id<<1],tree[id<<1|1]);
}
void update(int l,int r,int id,int tl,int tr){
    if(tr<l || r<tl) return;
    if(tl<=l && r<=tr){
        getnew(id,1);
        return;
    }
    pushdown(id);
    int mid=(l+r)>>1;
    update(l,mid,id<<1,tl,tr);update(mid+1,r,id<<1|1,tl,tr);
    tree[id]=min(tree[id<<1],tree[id<<1|1]);
}
vector<int> solve(vector<int> r){
    R=r;
    vector<int> p(n);
    ss.clear();cc.clear();
    build(0,n-1,1);
    for(int i=n-1;i>=0;i--){
        get(0,n-1,1);
        int x=*cc.begin();
        if((int)cc.size()>1 && x==0) x=*cc.rbegin();
        p[x]=i;del(x);
        if(x>=k-1) update(0,n-1,1,x-k+1,x);
        else{
            update(0,n-1,1,0,x);
            update(0,n-1,1,n-(k-x)+1,n-1);
        }
    }
    return p;
}

void init(int _k, std::vector<int> r) {
    k=_k;
    n=(int)r.size();
    H=solve(r);

    set<pair<int,int>> S;
    for(int i=0;i<k;i++) S.insert({H[i],i});
    for(int i=0;i<n;i++){
        auto it=S.erase(S.lower_bound({H[i],i}));
        if(it!=S.begin()) it=prev(it),rt[i][0]=(it->second-i+n)%n;
        S.insert({H[(i+k)%n],(i+k)%n});
    }
    S.clear();
    for(int i=1;i<=k;i++) S.insert({H[(n-i)%n],(n-i)%n});
    for(int i=0;i<n;i++){
        S.erase({H[(i-k+n)%n],(i-k+n)%n});
        auto it=S.insert({H[i],i}).first;
        if(it!=S.begin()) it=prev(it),lt[i][0]=(i-it->second+n)%n;
    }

    for(int j=1;j<18;j++){
        for(int i=0;i<n;i++){
            rt[i][j]=rt[i][j-1]+rt[(i+rt[i][j-1])%n][j-1];
            lt[i][j]=lt[i][j-1]+lt[(i-lt[i][j-1]%n+n)%n][j-1];
        }
    }
}

bool get_lt(int x,int y){
    int d=(x-y+n)%n;
    for(int i=17;i>=0;i--){
        if(lt[x][i]<=d) d-=lt[x][i],x=(x-lt[x][i]%n+n)%n;
    }
    return (x-y+n)%n<k && H[x]>=H[y];
}

bool get_rt(int x,int y){
    int d=(y-x+n)%n;
    for(int i=17;i>=0;i--){
        if(rt[x][i]<=d) d-=rt[x][i],x=(x+rt[x][i])%n;
    }
    return (y-x+n)%n<k && H[x]>=H[y];
}

int compare_plants(int x, int y) {
    if(get_lt(x,y) || get_rt(x,y)) return 1;
    if(get_lt(y,x) || get_rt(y,x)) return -1;
	return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 107 ms 4052 KB Output is correct
7 Correct 124 ms 9408 KB Output is correct
8 Correct 344 ms 49216 KB Output is correct
9 Correct 278 ms 48704 KB Output is correct
10 Correct 289 ms 48708 KB Output is correct
11 Correct 313 ms 49220 KB Output is correct
12 Correct 289 ms 49096 KB Output is correct
13 Correct 282 ms 53572 KB Output is correct
14 Correct 295 ms 44096 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 3 ms 604 KB Output is correct
7 Correct 57 ms 6200 KB Output is correct
8 Correct 2 ms 344 KB Output is correct
9 Correct 3 ms 604 KB Output is correct
10 Correct 52 ms 6140 KB Output is correct
11 Correct 73 ms 6224 KB Output is correct
12 Correct 94 ms 6320 KB Output is correct
13 Correct 47 ms 6224 KB Output is correct

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 3 ms 604 KB Output is correct
7 Correct 57 ms 6200 KB Output is correct
8 Correct 2 ms 344 KB Output is correct
9 Correct 3 ms 604 KB Output is correct
10 Correct 52 ms 6140 KB Output is correct
11 Correct 73 ms 6224 KB Output is correct
12 Correct 94 ms 6320 KB Output is correct
13 Correct 47 ms 6224 KB Output is correct
14 Correct 82 ms 9880 KB Output is correct
15 Runtime error 510 ms 98880 KB Execution killed with signal 11
16 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 77 ms 5228 KB Output is correct
4 Correct 377 ms 47168 KB Output is correct
5 Correct 343 ms 45120 KB Output is correct
6 Correct 361 ms 44608 KB Output is correct
7 Correct 464 ms 45124 KB Output is correct
8 Runtime error 460 ms 95556 KB Execution killed with signal 11
9 Halted 0 ms 0 KB -

Subtask #5
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 3 ms 348 KB Output is correct
7 Correct 27 ms 1372 KB Output is correct
8 Correct 11 ms 1368 KB Output is correct
9 Correct 18 ms 1372 KB Output is correct
10 Correct 11 ms 1396 KB Output is correct
11 Correct 24 ms 1368 KB Output is correct
12 Correct 20 ms 1368 KB Output is correct
13 Correct 13 ms 1372 KB Output is correct

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 2 ms 604 KB Output is correct
6 Correct 361 ms 43640 KB Output is correct
7 Correct 392 ms 43844 KB Output is correct
8 Correct 342 ms 44356 KB Output is correct
9 Runtime error 499 ms 94784 KB Execution killed with signal 11
10 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 107 ms 4052 KB Output is correct
7 Correct 124 ms 9408 KB Output is correct
8 Correct 344 ms 49216 KB Output is correct
9 Correct 278 ms 48704 KB Output is correct
10 Correct 289 ms 48708 KB Output is correct
11 Correct 313 ms 49220 KB Output is correct
12 Correct 289 ms 49096 KB Output is correct
13 Correct 282 ms 53572 KB Output is correct
14 Correct 295 ms 44096 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 3 ms 604 KB Output is correct
21 Correct 57 ms 6200 KB Output is correct
22 Correct 2 ms 344 KB Output is correct
23 Correct 3 ms 604 KB Output is correct
24 Correct 52 ms 6140 KB Output is correct
25 Correct 73 ms 6224 KB Output is correct
26 Correct 94 ms 6320 KB Output is correct
27 Correct 47 ms 6224 KB Output is correct
28 Correct 82 ms 9880 KB Output is correct
29 Runtime error 510 ms 98880 KB Execution killed with signal 11
30 Halted 0 ms 0 KB -