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답안 #436819

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
436819 2021-06-25T02:07:56 Z edenooo 사탕 분배 (IOI21_candies) C++17
100 / 100
 687 ms 31552 KB 
#include "candies.h"

#include <bits/stdc++.h>
using namespace std;

#define INF 1234567890
#define ll long long

ll last = 0;
pair<ll, ll> seg[530000];
ll lazy[530000];
pair<ll, ll> Merge(pair<ll, ll> l, pair<ll, ll> r)
{
    return {min(l.first,r.first), max(l.second, r.second)};
}
void Propagate(int n, int l, int r) // add
{
    if (lazy[n])
    {
        if (l != r)
        {
            lazy[n<<1] += lazy[n];
            lazy[n<<1|1] += lazy[n];
        }
        seg[n].first += lazy[n];
        seg[n].second += lazy[n];
        lazy[n] = 0;
    }
}
pair<ll, ll> Update(int L, int R, ll val, int n, int l, int r)
{
    Propagate(n, l, r);
    if (r < L || R < l) return seg[n];
    if (L <= l && r <= R)
    {
        lazy[n] += val; // add
        Propagate(n, l, r);
        return seg[n];
    }
    int mid = l+r>>1;
    return seg[n] = Merge(Update(L, R, val, n<<1, l, mid), Update(L, R, val, n<<1|1, mid+1, r));
}
ll Kth(ll C, ll mn, ll mx, int n, int l, int r) // 1 <= k <= propagated_seg[1]
{
    Propagate(n, l, r); //
    if (l == r)
    {
        mn = min(mn, seg[n].first);
        mx = max(mx, seg[n].second);
        assert(mx - mn >= C);
        if (mn == seg[n].first) return C - (mx - last);
        else return last - mn;
    }
    int mid = l+r>>1;
    Propagate(n<<1|1, mid+1, r);
    ll next_mn = min(mn, seg[n<<1|1].first), next_mx = max(mx, seg[n<<1|1].second);
    if (next_mx - next_mn >= C) return Kth(C, mn, mx, n<<1|1, mid+1, r);
    return Kth(C, next_mn, next_mx, n<<1, l, mid);
}

int N, Q;
vector<pair<int, int> > D[200201];

vector<int> distribute_candies(vector<int> C, vector<int> L, vector<int> R, vector<int> V) {
    N = C.size(); Q = L.size();
    // INF와 0을 맨 앞에 끼워넣어서 예외 처리
    D[0].push_back({0, INF});
    D[0].push_back({1, -INF});
    for(int i=0; i<Q; i++)
    {
        D[L[i]].push_back({i+2, V[i]});
        D[R[i]+1].push_back({i+2, -V[i]});
    }

    vector<int> res(N);
    for(int i=0; i<N; i++)
    {
        for(auto [idx,val] : D[i])
        {
            last += val;
            Update(idx, Q+1, val, 1, 0, Q+1); //
        }
        res[i] = Kth(C[i], (ll)1e18, (ll)-1e18, 1, 0, Q+1);
    }
    return res;
}

// int main() {}

Compilation message

candies.cpp: In function 'std::pair<long long int, long long int> Update(int, int, long long int, int, int, int)':
candies.cpp:40:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   40 |     int mid = l+r>>1;
      |               ~^~
candies.cpp: In function 'long long int Kth(long long int, long long int, long long int, int, int, int)':
candies.cpp:54:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   54 |     int mid = l+r>>1;
      |               ~^~

Subtask #1
3.0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4940 KB Output is correct
2 Correct 4 ms 4940 KB Output is correct
3 Correct 6 ms 5196 KB Output is correct
4 Correct 6 ms 5196 KB Output is correct
5 Correct 7 ms 5196 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 676 ms 31304 KB Output is correct
2 Correct 663 ms 31532 KB Output is correct
3 Correct 626 ms 31392 KB Output is correct

Subtask #3
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4940 KB Output is correct
2 Correct 377 ms 26520 KB Output is correct
3 Correct 87 ms 8756 KB Output is correct
4 Correct 592 ms 31400 KB Output is correct
5 Correct 640 ms 31400 KB Output is correct
6 Correct 685 ms 31300 KB Output is correct
7 Correct 687 ms 31428 KB Output is correct

Subtask #4
29.0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 4940 KB Output is correct
2 Correct 5 ms 4940 KB Output is correct
3 Correct 153 ms 25228 KB Output is correct
4 Correct 82 ms 7568 KB Output is correct
5 Correct 271 ms 27392 KB Output is correct
6 Correct 252 ms 27500 KB Output is correct
7 Correct 252 ms 27564 KB Output is correct
8 Correct 237 ms 27396 KB Output is correct
9 Correct 244 ms 27560 KB Output is correct

Subtask #5
33.0 / 33.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4940 KB Output is correct
2 Correct 4 ms 4940 KB Output is correct
3 Correct 6 ms 5196 KB Output is correct
4 Correct 6 ms 5196 KB Output is correct
5 Correct 7 ms 5196 KB Output is correct
6 Correct 676 ms 31304 KB Output is correct
7 Correct 663 ms 31532 KB Output is correct
8 Correct 626 ms 31392 KB Output is correct
9 Correct 4 ms 4940 KB Output is correct
10 Correct 377 ms 26520 KB Output is correct
11 Correct 87 ms 8756 KB Output is correct
12 Correct 592 ms 31400 KB Output is correct
13 Correct 640 ms 31400 KB Output is correct
14 Correct 685 ms 31300 KB Output is correct
15 Correct 687 ms 31428 KB Output is correct
16 Correct 5 ms 4940 KB Output is correct
17 Correct 5 ms 4940 KB Output is correct
18 Correct 153 ms 25228 KB Output is correct
19 Correct 82 ms 7568 KB Output is correct
20 Correct 271 ms 27392 KB Output is correct
21 Correct 252 ms 27500 KB Output is correct
22 Correct 252 ms 27564 KB Output is correct
23 Correct 237 ms 27396 KB Output is correct
24 Correct 244 ms 27560 KB Output is correct
25 Correct 4 ms 4940 KB Output is correct
26 Correct 82 ms 7624 KB Output is correct
27 Correct 382 ms 26564 KB Output is correct
28 Correct 605 ms 31408 KB Output is correct
29 Correct 652 ms 31300 KB Output is correct
30 Correct 610 ms 31468 KB Output is correct
31 Correct 642 ms 31552 KB Output is correct
32 Correct 635 ms 31392 KB Output is correct