oj.uz

Submission #641776

# Submission time Handle Problem Language Result Execution time Memory
641776 2022-09-17T15:21:44 Z lis05st Comparing Plants (IOI20_plants) C++17
100 / 100
 3344 ms 150216 KB 
#ifdef LIS05ST
    #define _GLIBCXX_DEBUG
    #define _GLIBCXX_DEBUG_PEDANTIC
#endif
#pragma GCC optimize("O3")
#pragma GCC target("avx2,popcnt,lzcnt")
#include"plants.h"
#include"bits/stdc++.h"
using namespace std;

typedef long long ll;
typedef long double ld;

const int NMAX=2e6;
int pref[NMAX+5];
int n,k;

int get(int l,int r){
    return pref[r]-pref[l-1];
}
bool one(int l,int r){
    return get(l,r)==r-l+1;
}
bool zero(int l,int r){
    return get(l,r)==0;
}
vector<int>h;
int id(int x){
    return (x%n+n)%n;
}


struct Node{
    int min;
    int pos;
    ll padd;
};
Node tree[4*NMAX+5];

Node merge(Node a,Node b){
    Node res;
    res.min=min(a.min,b.min);
    res.pos=-1;
    if(a.min==res.min){
        res.pos=max(res.pos,a.pos);
    }
    if(b.min==res.min){
        res.pos=max(res.pos,b.pos);
    }
    res.padd=0;
    return res;
}

vector<int>vec;
void build(int v,int l,int r){
    if(l==r){
        tree[v].min=vec[l];
        tree[v].pos=l;
        tree[v].padd=0;
        return;
    }
    int m=(l+r)/2;
    build(2*v,l,m);
    build(2*v+1,m+1,r);
    tree[v]=merge(tree[2*v],tree[2*v+1]);
}

void pushAdd(int v,int val){
    tree[v].min+=val;
    tree[v].padd+=val;
}
void push(int v,int l,int r){
    pushAdd(2*v,tree[v].padd);
    pushAdd(2*v+1,tree[v].padd);
    tree[v].padd=0;
}

pair<int,int> get(int v,int l,int r,int l0,int r0,bool p=1){
    //if(p)cout<<l<<":"<<r<<" "<<l0<<":"<<r0<<"\n";
    //if(p)cout<<tree[2*v].min<<" "<<tree[2*v].pos<<"\n";
    push(v,l,r);
    if(r0<l||r<l0||tree[v].min!=0)return {1e9,1e9};
    if(l0<=l&&r<=r0&&l==r)return {tree[v].min,tree[v].pos};
    int m=(l+r)/2;
    if(tree[2*v].min==0&&tree[2*v].pos>=l0)return get(2*v,l,m,l0,r0,p);
    return get(2*v+1,m+1,r,l0,r0,p);
}

void add(int v,int l,int r,int l0,int r0,int val){
    push(v,l,r);
    if(r0<l||r<l0)return;
    if(l0<=l&&r<=r0){
        pushAdd(v,val);
        return;
    }
    int m=(l+r)/2;
    add(2*v,l,m,l0,r0,val);
    add(2*v+1,m+1,r,l0,r0,val);
    tree[v]=merge(tree[2*v],tree[2*v+1]);
}

void add(int l,int r,int val){
    l-=3*n;r-=3*n;
    for(auto e:vector<int>{0,1,2,3,4,5,6,7,8}){
        if(0<=r&&r<=3*n-1){
            int L=min(3*n-1,max(l,0));
            int R=min(3*n-1,max(r,0));
            add(1,0,3*n-1,L,R,val);
        }
        else if(0<=l&&l<=3*n-1){
            int L=min(3*n-1,max(l,0));
            int R=min(3*n-1,max(r,0));
            add(1,0,3*n-1,L,R,val);
        }
        l+=n;r+=n;
    }
}
int step;
void extract(int pos){
    while(true){
        auto [a,b]=get(1,0,3*n-1,pos-k+1,pos-1);
        if(a==0)extract(b);
        else break;
    }

    h[pos%n]=step--;
    add(pos-k+1,pos-1,-1);
    add(pos,pos,1e9);
}


int lefte[30][NMAX+5];
int righte[30][NMAX+5];


void init(int K, std::vector<int> rr){
    n=rr.size();h.resize(n);
    k=K;
    for(int i=0;i<n;i++)pref[i+1]=pref[i]+rr[i];

    for(int e=0;e<3;e++)for(int i=0;i<n;i++){
        vec.push_back(rr[i]);
    }
    //for(auto e:vec)cout<<e<<" ";cout<<"\n";
    build(1,0,3*n-1);
    int L=0+n+n;int R=n-1+n+n;
    step=n;
    while(step>=1){

        auto[val,pos]=get(1,0,3*n-1,L,R);
        extract(pos);
    }
    for(int i=0;;i++){
        if(h.size()==2*n)break;
        h.push_back(h[i]);
    }
    //for(auto e:h)cout<<e<<" ";cout<<"\n";
    set<pair<int,int>>st;
    int N=2*n;
    for(int i=0;i<N;i++){
        if(i-1>=0)st.insert({h[i-1],i-1});
        if(i-k>=0)st.erase({h[i-k],i-k});
        auto it=st.lower_bound({h[i],-1e9});
        if(it==st.begin()||st.empty()){
            lefte[0][i]=i;
            continue;
        }
        it=prev(it);
        lefte[0][i]=it->second;
    }
    st.clear();
    for(int i=N-1;i>=0;i--){
        if(i+1<N)st.insert({h[i+1],i+1});
        if(i+k<N)st.erase({h[i+k],i+k});
        auto it=st.lower_bound({h[i],-1e9});
        if(it==st.begin()||st.empty()){
            righte[0][i]=i;
            continue;
        }
        it=prev(it);
        righte[0][i]=it->second;
    }
    for(int lvl=1;lvl<21;lvl++){
        for(int i=0;i<N;i++){
            lefte[lvl][i]=lefte[lvl-1][lefte[lvl-1][i]];
            righte[lvl][i]=righte[lvl-1][righte[lvl-1][i]];
        }
    }
};

int ddist(int u,int v){
    return min({abs(u-v),abs(u+n-v),abs(v+n-u)});
}

int lgt(int x,int y){
    for(int lvl=20;lvl>=0;lvl--){
        int pos=lefte[lvl][x];
        if(pos<y)continue;
        x=pos;
    }
    if(ddist(x,y)<k&&h[x]>=h[y])return 1;
    return 0;
}
int rgt(int x,int y){
    for(int lvl=20;lvl>=0;lvl--){
        int pos=righte[lvl][x];
        if(pos>y)continue;
        x=pos;
    }
    if(ddist(x,y)<k&&h[x]>=h[y])return 1;
    return 0;
}

int gt(int X,int y){
    while(X-n>=0)X-=n;
    while(y-n>=0)y-=n;
    for(int x=X;x<2*n;x+=n){
            if(x<y)if(rgt(x,y))return 1;
            if(y<x)if(lgt(x,y))return 1;
        while(y-n>=0){
            if(x<y)if(rgt(x,y))return 1;
            if(y<x)if(lgt(x,y))return 1;
            y-=n;
            if(x<y)if(rgt(x,y))return 1;
            if(y<x)if(lgt(x,y))return 1;
        }

            if(x<y)if(rgt(x,y))return 1;
            if(y<x)if(lgt(x,y))return 1;
        while(y+n<2*n){
            if(x<y)if(rgt(x,y))return 1;
            if(y<x)if(lgt(x,y))return 1;
            y+=n;
            if(x<y)if(rgt(x,y))return 1;
            if(y<x)if(lgt(x,y))return 1;
        }
            if(x<y)if(rgt(x,y))return 1;
            if(y<x)if(lgt(x,y))return 1;
    }
    return 0;
}

int compare_plants(int x, int y){
    if(gt(x,y))return 1;
    if(gt(y,x))return -1;
    return 0;
}

#define MULTITESTS false
void solve(int testCase){

}

           
//   x     y


void precalc(){

}
/*
signed main(){
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    precalc();
    int t=1;
    if(MULTITESTS)cin>>t;
    for(int i=1;i<=t;i++){
        auto t1=clock();
        solve(i);
        auto t2=clock();
        float delta=t2-t1;
        delta/=CLOCKS_PER_SEC;
        #ifdef LIS05ST
        cout<<"("<<i<<")------------"<<fixed<<setprecision(2)<<delta<<"s\n";
        #endif
    }
}*/

Compilation message

plants.cpp: In function 'void add(int, int, int)':
plants.cpp:104:14: warning: unused variable 'e' [-Wunused-variable]
  104 |     for(auto e:vector<int>{0,1,2,3,4,5,6,7,8}){
      |              ^
plants.cpp: In function 'void init(int, std::vector<int>)':
plants.cpp:154:20: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  154 |         if(h.size()==2*n)break;
      |            ~~~~~~~~^~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 596 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 1 ms 596 KB Output is correct
5 Correct 0 ms 596 KB Output is correct
6 Correct 227 ms 3392 KB Output is correct
7 Correct 655 ms 14752 KB Output is correct
8 Correct 2297 ms 140616 KB Output is correct
9 Correct 2390 ms 140696 KB Output is correct
10 Correct 2156 ms 140620 KB Output is correct
11 Correct 1795 ms 140812 KB Output is correct
12 Correct 1670 ms 140620 KB Output is correct
13 Correct 779 ms 140888 KB Output is correct
14 Correct 1888 ms 140600 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 596 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 1 ms 596 KB Output is correct
5 Correct 1 ms 724 KB Output is correct
6 Correct 8 ms 1320 KB Output is correct
7 Correct 296 ms 6412 KB Output is correct
8 Correct 4 ms 724 KB Output is correct
9 Correct 8 ms 1320 KB Output is correct
10 Correct 237 ms 6416 KB Output is correct
11 Correct 86 ms 6284 KB Output is correct
12 Correct 346 ms 6544 KB Output is correct
13 Correct 234 ms 6460 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 596 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 1 ms 596 KB Output is correct
5 Correct 1 ms 724 KB Output is correct
6 Correct 8 ms 1320 KB Output is correct
7 Correct 296 ms 6412 KB Output is correct
8 Correct 4 ms 724 KB Output is correct
9 Correct 8 ms 1320 KB Output is correct
10 Correct 237 ms 6416 KB Output is correct
11 Correct 86 ms 6284 KB Output is correct
12 Correct 346 ms 6544 KB Output is correct
13 Correct 234 ms 6460 KB Output is correct
14 Correct 533 ms 15092 KB Output is correct
15 Correct 2864 ms 146612 KB Output is correct
16 Correct 484 ms 15200 KB Output is correct
17 Correct 2997 ms 146472 KB Output is correct
18 Correct 1207 ms 145404 KB Output is correct
19 Correct 2315 ms 145380 KB Output is correct
20 Correct 2568 ms 150216 KB Output is correct

Subtask #4
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 596 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 175 ms 4644 KB Output is correct
4 Correct 1670 ms 144168 KB Output is correct
5 Correct 1896 ms 143760 KB Output is correct
6 Correct 2239 ms 144144 KB Output is correct
7 Correct 2490 ms 144784 KB Output is correct
8 Correct 2708 ms 148592 KB Output is correct
9 Correct 1284 ms 143716 KB Output is correct
10 Correct 1676 ms 143784 KB Output is correct
11 Correct 752 ms 143708 KB Output is correct
12 Correct 1904 ms 143828 KB Output is correct
13 Correct 1129 ms 146636 KB Output is correct

Subtask #5
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 1 ms 596 KB Output is correct
5 Correct 1 ms 596 KB Output is correct
6 Correct 7 ms 720 KB Output is correct
7 Correct 66 ms 1740 KB Output is correct
8 Correct 36 ms 1684 KB Output is correct
9 Correct 47 ms 1680 KB Output is correct
10 Correct 33 ms 1680 KB Output is correct
11 Correct 62 ms 1680 KB Output is correct
12 Correct 49 ms 1664 KB Output is correct
13 Correct 33 ms 1744 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 0 ms 596 KB Output is correct
3 Correct 0 ms 596 KB Output is correct
4 Correct 0 ms 596 KB Output is correct
5 Correct 5 ms 1236 KB Output is correct
6 Correct 1550 ms 142936 KB Output is correct
7 Correct 1482 ms 143220 KB Output is correct
8 Correct 1514 ms 143804 KB Output is correct
9 Correct 1782 ms 147788 KB Output is correct
10 Correct 1868 ms 142824 KB Output is correct
11 Correct 1343 ms 147108 KB Output is correct
12 Correct 1111 ms 143536 KB Output is correct
13 Correct 1512 ms 142880 KB Output is correct
14 Correct 1396 ms 143152 KB Output is correct
15 Correct 1552 ms 143776 KB Output is correct
16 Correct 1084 ms 142756 KB Output is correct
17 Correct 1336 ms 143052 KB Output is correct

Subtask #7
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 596 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 1 ms 596 KB Output is correct
5 Correct 0 ms 596 KB Output is correct
6 Correct 227 ms 3392 KB Output is correct
7 Correct 655 ms 14752 KB Output is correct
8 Correct 2297 ms 140616 KB Output is correct
9 Correct 2390 ms 140696 KB Output is correct
10 Correct 2156 ms 140620 KB Output is correct
11 Correct 1795 ms 140812 KB Output is correct
12 Correct 1670 ms 140620 KB Output is correct
13 Correct 779 ms 140888 KB Output is correct
14 Correct 1888 ms 140600 KB Output is correct
15 Correct 0 ms 596 KB Output is correct
16 Correct 1 ms 596 KB Output is correct
17 Correct 1 ms 596 KB Output is correct
18 Correct 1 ms 596 KB Output is correct
19 Correct 1 ms 724 KB Output is correct
20 Correct 8 ms 1320 KB Output is correct
21 Correct 296 ms 6412 KB Output is correct
22 Correct 4 ms 724 KB Output is correct
23 Correct 8 ms 1320 KB Output is correct
24 Correct 237 ms 6416 KB Output is correct
25 Correct 86 ms 6284 KB Output is correct
26 Correct 346 ms 6544 KB Output is correct
27 Correct 234 ms 6460 KB Output is correct
28 Correct 533 ms 15092 KB Output is correct
29 Correct 2864 ms 146612 KB Output is correct
30 Correct 484 ms 15200 KB Output is correct
31 Correct 2997 ms 146472 KB Output is correct
32 Correct 1207 ms 145404 KB Output is correct
33 Correct 2315 ms 145380 KB Output is correct
34 Correct 2568 ms 150216 KB Output is correct
35 Correct 0 ms 596 KB Output is correct
36 Correct 1 ms 596 KB Output is correct
37 Correct 175 ms 4644 KB Output is correct
38 Correct 1670 ms 144168 KB Output is correct
39 Correct 1896 ms 143760 KB Output is correct
40 Correct 2239 ms 144144 KB Output is correct
41 Correct 2490 ms 144784 KB Output is correct
42 Correct 2708 ms 148592 KB Output is correct
43 Correct 1284 ms 143716 KB Output is correct
44 Correct 1676 ms 143784 KB Output is correct
45 Correct 752 ms 143708 KB Output is correct
46 Correct 1904 ms 143828 KB Output is correct
47 Correct 1129 ms 146636 KB Output is correct
48 Correct 1 ms 596 KB Output is correct
49 Correct 1 ms 596 KB Output is correct
50 Correct 1 ms 596 KB Output is correct
51 Correct 1 ms 596 KB Output is correct
52 Correct 1 ms 596 KB Output is correct
53 Correct 7 ms 720 KB Output is correct
54 Correct 66 ms 1740 KB Output is correct
55 Correct 36 ms 1684 KB Output is correct
56 Correct 47 ms 1680 KB Output is correct
57 Correct 33 ms 1680 KB Output is correct
58 Correct 62 ms 1680 KB Output is correct
59 Correct 49 ms 1664 KB Output is correct
60 Correct 33 ms 1744 KB Output is correct
61 Correct 424 ms 6348 KB Output is correct
62 Correct 830 ms 16936 KB Output is correct
63 Correct 3344 ms 143560 KB Output is correct
64 Correct 1991 ms 143796 KB Output is correct
65 Correct 2486 ms 144040 KB Output is correct
66 Correct 2501 ms 144828 KB Output is correct
67 Correct 2719 ms 148716 KB Output is correct
68 Correct 2513 ms 143724 KB Output is correct
69 Correct 2322 ms 148160 KB Output is correct
70 Correct 2025 ms 144336 KB Output is correct
71 Correct 2790 ms 143872 KB Output is correct
72 Correct 2459 ms 143924 KB Output is correct
73 Correct 2514 ms 144716 KB Output is correct
74 Correct 3040 ms 143644 KB Output is correct
75 Correct 1768 ms 143776 KB Output is correct