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Submission #618038

# Submission time Handle Problem Language Result Execution time Memory
618038 2022-08-01T19:57:12 Z CaroLinda Distributing Candies (IOI21_candies) C++17
8 / 100
 320 ms 30392 KB 
#include "candies.h"
#include <bits/stdc++.h>

#define ll long long

const int MAXN = 2e5+10;

using namespace std;

ll smx[MAXN*4], smn[MAXN*4], soma[MAXN*4];

int m(int l, int r){
    return (l+r)>>1;
}

void update(int pos, int l, int r, int id, ll newVal){
    if(l == r){
        smx[pos] = smn[pos] = soma[pos] = newVal;
        smx[pos] = max(smx[pos], 0LL);
        smn[pos] = min(smn[pos], 0LL);
        return;
    }

    if(id <= m(l,r))
        update(pos<<1 , l , m(l,r), id, newVal);
    else update(pos<<1|1, m(l,r)+1, r, id, newVal);

    smx[pos] = max(smx[pos<<1], soma[pos<<1]+smx[pos<<1|1]);
    smn[pos] = min(smn[pos<<1], soma[pos<<1]+smn[pos<<1|1]);
    soma[pos] = soma[pos<<1]+soma[pos<<1|1];
}

ll qry(int pos, int l, int r, ll c){
    if(l == r){
        return min( max(0LL, soma[pos]), c );
    }

    if(smx[pos<<1|1]-smn[pos<<1] >= c)
        return qry(pos<<1|1, m(l,r)+1, r, c);

    ll rr = qry(pos<<1 , l , m(l,r), c);

    if(rr+smx[pos<<1|1] > c) 
        return c+(soma[pos<<1|1]-smx[pos<<1|1]);
    else if(rr+smn[pos<<1|1] < 0)
        return (soma[pos<<1|1]-smn[pos<<1|1]);

    return rr+soma[pos<<1|1];
}

vector<int> distribute_candies(vector<int> c, vector<int> l,
                                    vector<int> r, vector<int> v) {
    int n = c.size();
    int q = l.size();

    vector<vector<int> > sweep(n+1);
    
    for(int i = 0; i < q; i++){
        sweep[l[i]].push_back(i+1);
        sweep[r[i]+1].push_back(-i-1);
    }

    vector<int> ret;

    for(int i= 0; i < n; i++){
        for(auto &e : sweep[i]){
            int id = e < 0 ? -e-1 : e-1;
            update(1,0,n-1, id, e < 0 ? 0 : v[id]);
        }
        ret.push_back(qry(1,0,n-1, c[i]));
    }

    return ret;
}

Subtask #1
0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Incorrect 1 ms 340 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 311 ms 30244 KB Output is correct
2 Correct 320 ms 30324 KB Output is correct
3 Correct 298 ms 30392 KB Output is correct

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 340 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 29.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Incorrect 1 ms 340 KB Output isn't correct
4 Halted 0 ms 0 KB -