oj.uz

Submission #1078246

# Submission time Handle Problem Language Result Execution time Memory
1078246 2024-08-27T14:29:37 Z anango Comparing Plants (IOI20_plants) C++17
32 / 100
 522 ms 13676 KB 
#include "plants.h"
#include <bits/stdc++.h>
using namespace std;

int K;
int n;
vector<int> b;
int INF = 1LL<<30;

int tree[524288];
int lazy[524288]; //min add segtree

void push(int v, int tl, int tr) {
    if (tl<tr) {
        lazy[2*v]+=lazy[v];
        lazy[2*v+1]+=lazy[v];
    }
    tree[v]+=lazy[v];
    lazy[v] = 0;
}

void update(int v, int l, int r, int tl, int tr, int addend) {
    push(v,tl,tr);
    if (l>tr || r<tl) return;
    if (l<=tl && tr<=r) {
        if (tl<tr) {
            lazy[2*v]+=addend;
            lazy[2*v+1]+=addend;
        }
        tree[v]+=addend;
        return;
    }
    int m = (tl+tr)/2;
    update(2*v,l,r,tl,m,addend);
    update(2*v+1,l,r,m+1,tr,addend);
    tree[v] = min(tree[2*v],tree[2*v+1]);
}

int query(int v, int l, int r, int tl, int tr) {
    push(v,tl,tr);
    if (l>tr || r<tl) return INF;
    if (l<=tl && tr<=r) return tree[v];
    int m = (tl+tr)/2;
    return min(query(2*v,l,r,tl,m),query(2*v+1,l,r,m+1,tr));
}

int query2(int v, int l, int r, int tl, int tr) {
    //cout << v <<" " << l <<" " << r <<" " << tl <<" " << tr << endl;
    //finds the first 0 in range (l,r)
    push(v,tl,tr);
    if (l>tr || r<tl) return INF;
    /*for (int i=l; i<=r; i++) {
        update(1,i,i,0,262143,0); //to push
        if (tree[262144+i]==0) {
            return i;
        }
    }*/
    if (tree[v]>0) return INF;
    if (tl==tr) {
        return tl;
    }
    int m = (tl+tr)/2;
    int an = query2(2*v,l,r,tl,m);
    if (an!=INF) {
        return an;
    }
    return query2(2*v+1,l,r,m+1,tr);


}

vector<int> p;
vector<int> pref;

int cyclicpref(int l, int r) {
    if (l<=r) {
        return pref[r+1]-pref[l];
    }
    return (pref[n]-pref[l])+(pref[r+1]); 
}

void init(int k, std::vector<int> r) {
    for (int i=0; i<524288; i++) tree[i] = lazy[i] = INF;
    K=k;
    b=r;
    n=r.size();
    p=vector<int>(n,-1);
    if (K==2) {
        pref=vector<int>(n+1,0);
        for (int i=0; i<n; i++) {
            pref[i+1] = pref[i] + r[i];
        }
        return;
    }
    for (int i=0; i<n; i++) {
        update(1,i,i,0,262143,r[i]);
    }
    //let l[i] be the number of plants j in the k-1 indices before i such that i is higher than j
    //any 0 value is higher than the k-1 indices after it
    //get any 0 that does not have a 0 in the k-1 indices before
    //and subtract 1 from these indices
    int height = n;
    for (int op=0; op<n; op++) {
        /*cout << "SEGTREE STATE" << endl;
        for (int i=0; i<n; i++) {
            cout << query(1,i,i,0,262143) <<" ";
        }
        cout << endl;*/
        int x = query2(1,0,n-1,0,262143);
        assert(x!=INF);
        int li = x-k+1; li%=n; li+=n; li%=n;
        int ri = x-1; ri%=n; ri+=n; ri%=n;
        int an = INF;
        int jambloat = -1;
        
        if (li<=ri) {
            an=min(query(1,li,ri,0,262143),INF);
        }
        else {
            an=min(query(1,li,n-1,0,262143),query(1,0,ri,0,262143));
        }
        if (an!=0) {
            jambloat = x;
        }
        else {
            if (li<=ri) {
                jambloat=min(query2(1,li,ri,0,262143),INF);
            }
            else {
                if (query2(1,li,n-1,0,262143)>=INF/2) {
                    jambloat = query2(1,0,ri,0,262143);
                }
                else {
                    jambloat=query2(1,li,n-1,0,262143);  
                }
            }
        }
        li = jambloat-k+1; li%=n; li+=n; li%=n;
        ri = jambloat-1; ri%=n; ri+=n; ri%=n;
        if (li<=ri) {
            update(1,li,ri,0,262143,-1);
        }
        else {
            update(1,li,n-1,0,262143,-1);
            update(1,0,ri,0,262143,-1);
        }
        update(1,jambloat,jambloat,0,262143,INF-query(1,jambloat,jambloat,0,262143));
        //cout << "doing " << jambloat << endl;
        p[jambloat] = height;
        height--;

    }
    /*for (int i=0; i<n; i++) {
        cout << p[i] <<" ";
    }
    cout << endl;*/
	return;
}

int pre(int x) {
    x--;
    x+=n;
    x%=n;
    return x;
}

int compare_plants(int x, int y) {
    if (K==2) {
        int c1 = cyclicpref(x,pre(y));
        int c2 = cyclicpref(y,pre(x));  
        int m1 = (y-x+8*n)%n;
        int m2 = (x-y+8*n)%n;
        //cout << m1 <<" " << m2 <<" " << c1<<" " << c2 << endl;
        if (m1==c1 || c2==0) {
            return -1;
        }
        if (m2==c2 || c1==0) {
            return 1;
        }
        return 0;
    }
    if (p[x]>p[y]) return 1;
    else if (p[x]<p[y]) return -1;
	return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4444 KB Output is correct
2 Correct 2 ms 4444 KB Output is correct
3 Correct 2 ms 4444 KB Output is correct
4 Correct 3 ms 4696 KB Output is correct
5 Correct 2 ms 4444 KB Output is correct
6 Correct 34 ms 8136 KB Output is correct
7 Correct 40 ms 9808 KB Output is correct
8 Correct 50 ms 13676 KB Output is correct
9 Correct 52 ms 13652 KB Output is correct
10 Correct 51 ms 13648 KB Output is correct
11 Correct 49 ms 13648 KB Output is correct
12 Correct 53 ms 13648 KB Output is correct
13 Correct 54 ms 13652 KB Output is correct
14 Correct 56 ms 13548 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4444 KB Output is correct
2 Correct 2 ms 4536 KB Output is correct
3 Correct 2 ms 4444 KB Output is correct
4 Correct 3 ms 4444 KB Output is correct
5 Correct 2 ms 4444 KB Output is correct
6 Correct 5 ms 4444 KB Output is correct
7 Correct 52 ms 8596 KB Output is correct
8 Correct 4 ms 4444 KB Output is correct
9 Correct 4 ms 4640 KB Output is correct
10 Correct 50 ms 8692 KB Output is correct
11 Correct 51 ms 8580 KB Output is correct
12 Correct 50 ms 8748 KB Output is correct
13 Correct 47 ms 8568 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4444 KB Output is correct
2 Correct 2 ms 4536 KB Output is correct
3 Correct 2 ms 4444 KB Output is correct
4 Correct 3 ms 4444 KB Output is correct
5 Correct 2 ms 4444 KB Output is correct
6 Correct 5 ms 4444 KB Output is correct
7 Correct 52 ms 8596 KB Output is correct
8 Correct 4 ms 4444 KB Output is correct
9 Correct 4 ms 4640 KB Output is correct
10 Correct 50 ms 8692 KB Output is correct
11 Correct 51 ms 8580 KB Output is correct
12 Correct 50 ms 8748 KB Output is correct
13 Correct 47 ms 8568 KB Output is correct
14 Correct 93 ms 8976 KB Output is correct
15 Correct 522 ms 12072 KB Output is correct
16 Correct 81 ms 8744 KB Output is correct
17 Correct 490 ms 11860 KB Output is correct
18 Correct 398 ms 11820 KB Output is correct
19 Correct 389 ms 12072 KB Output is correct
20 Correct 482 ms 11868 KB Output is correct

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4444 KB Output is correct
2 Correct 2 ms 4444 KB Output is correct
3 Incorrect 43 ms 9048 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4444 KB Output is correct
2 Correct 2 ms 4444 KB Output is correct
3 Correct 3 ms 4444 KB Output is correct
4 Correct 2 ms 4444 KB Output is correct
5 Incorrect 3 ms 4444 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4444 KB Output is correct
2 Correct 4 ms 4444 KB Output is correct
3 Correct 2 ms 4444 KB Output is correct
4 Incorrect 2 ms 4440 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4444 KB Output is correct
2 Correct 2 ms 4444 KB Output is correct
3 Correct 2 ms 4444 KB Output is correct
4 Correct 3 ms 4696 KB Output is correct
5 Correct 2 ms 4444 KB Output is correct
6 Correct 34 ms 8136 KB Output is correct
7 Correct 40 ms 9808 KB Output is correct
8 Correct 50 ms 13676 KB Output is correct
9 Correct 52 ms 13652 KB Output is correct
10 Correct 51 ms 13648 KB Output is correct
11 Correct 49 ms 13648 KB Output is correct
12 Correct 53 ms 13648 KB Output is correct
13 Correct 54 ms 13652 KB Output is correct
14 Correct 56 ms 13548 KB Output is correct
15 Correct 2 ms 4444 KB Output is correct
16 Correct 2 ms 4536 KB Output is correct
17 Correct 2 ms 4444 KB Output is correct
18 Correct 3 ms 4444 KB Output is correct
19 Correct 2 ms 4444 KB Output is correct
20 Correct 5 ms 4444 KB Output is correct
21 Correct 52 ms 8596 KB Output is correct
22 Correct 4 ms 4444 KB Output is correct
23 Correct 4 ms 4640 KB Output is correct
24 Correct 50 ms 8692 KB Output is correct
25 Correct 51 ms 8580 KB Output is correct
26 Correct 50 ms 8748 KB Output is correct
27 Correct 47 ms 8568 KB Output is correct
28 Correct 93 ms 8976 KB Output is correct
29 Correct 522 ms 12072 KB Output is correct
30 Correct 81 ms 8744 KB Output is correct
31 Correct 490 ms 11860 KB Output is correct
32 Correct 398 ms 11820 KB Output is correct
33 Correct 389 ms 12072 KB Output is correct
34 Correct 482 ms 11868 KB Output is correct
35 Correct 2 ms 4444 KB Output is correct
36 Correct 2 ms 4444 KB Output is correct
37 Incorrect 43 ms 9048 KB Output isn't correct
38 Halted 0 ms 0 KB -