oj.uz

Submission #1078219

# Submission time Handle Problem Language Result Execution time Memory
1078219 2024-08-27T14:11:49 Z anango Comparing Plants (IOI20_plants) C++17
14 / 100
 4000 ms 9380 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) {
    //finds the first 0 in range (l,r)
    push(v,tl,tr);
    for (int i=l; i<=r; i++) {
        update(1,i,i,0,262143,0); //to push
        if (tree[262144+i]==0) {
            return i;
        }
    }
    return INF;
    if (tree[v]!=0) {
        return INF;
    }


}

vector<int> p;
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);
    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 compare_plants(int x, int y) {
    if (p[x]>p[y]) return 1;
    else if (p[x]<p[y]) return -1;
	return 0;
}

Subtask #1
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 Runtime error 5 ms 8796 KB Execution killed with signal 6
5 Halted 0 ms 0 KB -

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 4444 KB Output is correct
3 Correct 2 ms 4444 KB Output is correct
4 Correct 3 ms 4456 KB Output is correct
5 Correct 3 ms 4444 KB Output is correct
6 Correct 112 ms 4444 KB Output is correct
7 Correct 2782 ms 9108 KB Output is correct
8 Correct 7 ms 4444 KB Output is correct
9 Correct 141 ms 4444 KB Output is correct
10 Correct 2659 ms 9112 KB Output is correct
11 Correct 2593 ms 9104 KB Output is correct
12 Correct 2664 ms 9380 KB Output is correct
13 Correct 2619 ms 9116 KB Output is correct

Subtask #3
0 / 13.0

# 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 Correct 2 ms 4444 KB Output is correct
4 Correct 3 ms 4456 KB Output is correct
5 Correct 3 ms 4444 KB Output is correct
6 Correct 112 ms 4444 KB Output is correct
7 Correct 2782 ms 9108 KB Output is correct
8 Correct 7 ms 4444 KB Output is correct
9 Correct 141 ms 4444 KB Output is correct
10 Correct 2659 ms 9112 KB Output is correct
11 Correct 2593 ms 9104 KB Output is correct
12 Correct 2664 ms 9380 KB Output is correct
13 Correct 2619 ms 9116 KB Output is correct
14 Execution timed out 4062 ms 9264 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4456 KB Output is correct
2 Runtime error 6 ms 8796 KB Execution killed with signal 6
3 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# 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 2 ms 4444 KB Output isn't correct
4 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 2 ms 4348 KB Output is correct
3 Runtime error 5 ms 8728 KB Execution killed with signal 6
4 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 Runtime error 5 ms 8796 KB Execution killed with signal 6
5 Halted 0 ms 0 KB -