oj.uz

Submission #722709

# Submission time Handle Problem Language Result Execution time Memory
722709 2023-04-12T17:14:20 Z drdilyor Distributing Candies (IOI21_candies) C++17
100 / 100
 492 ms 48652 KB 
#include<bits/stdc++.h>
#include"candies.h"
using namespace std;
using ll = long long;


struct segtree {
    struct node {
        ll s{}, mx{}, mn{};
        node operator+(const node& o) {
            return node{s + o.s, max(o.mx, o.s + mx), min(o.mn, o.s + mn)};
        }
    };
    int n;
    vector<node> t;
    segtree(int m) : n(m), t(m*4) {}
    void upd(int i, int x) {
        t[i += n] = node {x, max(0, x), min(0, x)};
        for (i /= 2; i >= 1; i /= 2)
            t[i] = t[i*2] + t[i*2+1];
    }
    node query(int l, int r) {
        node resl, resr;
        l += n; r += n;
        while (l <=r) {
            if (l%2==1) resl = resl + t[l++];
            if (r%2==0) resr = t[r--] + resr;
            l /= 2; r /= 2;
        }
        return resl + resr;
    }
};

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

    vector<vector<int>> in(n), out(n);
    for (int i = 0; i < m; i++) {
        in[l[i]].push_back(i);
        out[r[i]].push_back(i);
    }

    segtree vcur(m);

    for(int i = 0; i < n; i ++){
        for (int j : in[i]) {
            vcur.upd(j, -v[j]);
        }

        int l = 0, r = m;
        while(l <= r){
            int mid = (l + r) >> 1;
            auto [s, mx, mn] = vcur.query(mid, m-1);
            if(mx - mn >= c[i]) {
                l = mid + 1;
            }else r = mid - 1;
        }
        r ++;
        if(r == 0 || v[r - 1] < 0){
            auto [s, mx, mn] = vcur.query(r, m-1);
            c[i] = -mn;
        }else{
            auto [s, mx, mn] = vcur.query(r, m-1);
            c[i] = c[i] - mx;
        }

        for (int j : out[i]) {
            vcur.upd(j, 0);
        }
    }
    //for(auto u : suf) cout << u << ' ';cout << endl;
    return c;
}

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 468 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 4 ms 724 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 452 ms 41956 KB Output is correct
2 Correct 488 ms 45964 KB Output is correct
3 Correct 472 ms 45844 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 142 ms 26800 KB Output is correct
3 Correct 111 ms 11684 KB Output is correct
4 Correct 440 ms 41932 KB Output is correct
5 Correct 492 ms 48244 KB Output is correct
6 Correct 450 ms 48652 KB Output is correct
7 Correct 361 ms 47972 KB Output is correct

Subtask #4
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 88 ms 25672 KB Output is correct
4 Correct 96 ms 11516 KB Output is correct
5 Correct 256 ms 36548 KB Output is correct
6 Correct 251 ms 37036 KB Output is correct
7 Correct 210 ms 36924 KB Output is correct
8 Correct 271 ms 37020 KB Output is correct
9 Correct 299 ms 37040 KB Output is correct

Subtask #5
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 468 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 4 ms 724 KB Output is correct
6 Correct 452 ms 41956 KB Output is correct
7 Correct 488 ms 45964 KB Output is correct
8 Correct 472 ms 45844 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 142 ms 26800 KB Output is correct
11 Correct 111 ms 11684 KB Output is correct
12 Correct 440 ms 41932 KB Output is correct
13 Correct 492 ms 48244 KB Output is correct
14 Correct 450 ms 48652 KB Output is correct
15 Correct 361 ms 47972 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 88 ms 25672 KB Output is correct
19 Correct 96 ms 11516 KB Output is correct
20 Correct 256 ms 36548 KB Output is correct
21 Correct 251 ms 37036 KB Output is correct
22 Correct 210 ms 36924 KB Output is correct
23 Correct 271 ms 37020 KB Output is correct
24 Correct 299 ms 37040 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 104 ms 12716 KB Output is correct
27 Correct 140 ms 29344 KB Output is correct
28 Correct 409 ms 46492 KB Output is correct
29 Correct 421 ms 46880 KB Output is correct
30 Correct 447 ms 47148 KB Output is correct
31 Correct 370 ms 47264 KB Output is correct
32 Correct 389 ms 47564 KB Output is correct