oj.uz

답안 #927379

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
927379 2024-02-14T19:22:14 Z boris_mihov Two Dishes (JOI19_dishes) C++17
10 / 100
 10000 ms 42892 KB 
#include <algorithm>
#include <iostream>
#include <numeric>
#include <cassert>
#include <vector>

#define int long long
typedef long long llong;
const int MAXN = 200000 + 10;
const int MAXLOG = 20;
const llong INF = 1e18;

int n, m;
template <typename T>
struct Fenwick
{
    T tree[MAXN];
    void update(int pos, T val)
    {
        for (int idx = pos ; idx <= m ; idx += idx & (-idx))
        {
            tree[idx] += val;
        }
    }

    T query(int pos)
    {
        T res = 0;
        for (int idx = pos ; idx > 0 ; idx -= idx & (-idx))
        {
            res += tree[idx];
        }

        return res;
    }

    int findKthZero(int k)
    {
        int idx = 0;
        for (int log = MAXLOG - 1 ; log >= 0 ; --log)
        {
            if (idx + (1 << log) <= m && (1 << log) - tree[idx + (1 << log)] < k)
            {
                idx += (1 << log);
                k -= (1 << log) - tree[idx];
            }
        }

        return idx + 1;
    }

    int findKthOne(int k)
    {
        int idx = 0;
        for (int log = MAXLOG - 1 ; log >= 0 ; --log)
        {
            if (idx + (1 << log) <= m && tree[idx + (1 << log)] < k)
            {
                idx += (1 << log);
                k -= tree[idx];
            }
        }

        return idx + 1;
    }
};

Fenwick <int> fenwickNext;
Fenwick <llong> fenwickActive;

struct Dish
{
    int time;
    llong limit;
    int reward;
    int idx;
    bool type;
};

Dish a[MAXN];
Dish b[MAXN];
llong prefixA[MAXN];
llong prefixB[MAXN];
bool isNext[MAXN];
bool isActive[MAXN];
llong dpBorderM[MAXN];
llong dp[MAXN];

int globalRow;
llong findValue(int col)
{
    if (col == m + 1)
    {
        return dp[m + 1];
    }

    int cnt = col - 1 - fenwickNext.query(col - 1);
    int pos = m;
    
    if (cnt != m - fenwickNext.query(m))
    {
        // std::cout << "IN THE FUCKING IF: " << cnt << ' ' << m << ' ' << fenwickNext.query(m) << '\n';
        // std::cout << "next is\n";
        // for (int i = 1 ; i <= m ; ++i)
        // {
        //     std::cout << fenwickNext.query(i) - fenwickNext.query(i - 1);
        // }

        // std::cout << '\n';

        // std::cout << "lapai\n";
        pos = fenwickNext.findKthZero(cnt + 1);
    }

    // if (col == 3) std::cout << "\n\n      value: " << col << ' ' << m - fenwickNext.query(m) << ' ' << cnt << ' ' << pos << ' ' << fenwickActive.query(pos - 1) - fenwickActive.query(col - 1) + dp[pos] << '\n';
    return fenwickActive.query(pos - 1) - fenwickActive.query(col - 1) + dp[pos];
}

void fix(int col)
{
    assert(col <= m);
    llong prevVal = findValue(col);
    llong curr = dp[col];
    llong next = findValue(col + 1) + fenwickActive.query(col) - fenwickActive.query(col - 1);
    // std::cout << "here: " << curr << ' ' << next << '\n';
    int res = fenwickNext.query(col) - fenwickNext.query(col - 1);
    fenwickNext.update(col, -res);

    int nextVal = 0;
    if (curr > next) 
    {
        fenwickNext.update(col, 0); // unessesary
    } else 
    {
        nextVal = 1;
        fenwickNext.update(col, 1);
    }

    // std::cout << "set: " << col << " = " << curr << ' ' << next << '\n';
    dp[col] = std::max(curr, next);
    if (res != nextVal)
    {
        if (prevVal < dp[col])
        {
            int cntBefore = col - 1 - fenwickNext.query(col - 1);
            // std::cout << "cnt before: " << cntBefore << '\n';
            if (cntBefore > 0)
            {
                fix(fenwickNext.findKthZero(cntBefore));
            }
        } else
        {
            // assert(false);
            int cntBefore = fenwickNext.query(col - 1);
            // std::cout << "cnt before: " << cntBefore << '\n';
            if (cntBefore > 0)
            {
                fix(fenwickNext.findKthOne(cntBefore));
            }
        }
    }
}

void applyUpdate(int to, int val)
{
    for (int i = 1 ; i <= to ; ++i)
    {
        dp[i] += val;
    }
}

std::vector <int> activateAt[MAXN];
void solve()
{
    for (int i = 1 ; i <= n ; ++i)
    {
        prefixA[i] = prefixA[i - 1] + a[i].time;
    }

    for (int i = 1 ; i <= m ; ++i)
    {
        prefixB[i] = prefixB[i - 1] + b[i].time;
    }

    for (int aPos = n ; aPos >= 1 ; --aPos)
    {
        dpBorderM[aPos] = dpBorderM[aPos + 1] + (prefixA[aPos - 1] + prefixB[m] + a[aPos].time <= a[aPos].limit ? a[aPos].reward : 0);
    }

    for (int i = 1 ; i <= m ; ++i)
    {
        int l = 0, r = n + 2, mid;
        while (l < r - 1)
        {
            mid = (l + r) / 2;
            if (prefixA[mid - 1] + prefixB[i] <= b[i].limit) l = mid;
            else r = mid;
        }

        activateAt[l].push_back(i);
        // std::cout << "here: " << i << ' ' << l << '\n';
    }

    globalRow = n + 1;
    for (int i = 1 ; i <= n ; ++i)
    {
        fenwickNext.update(i, 1);
        isNext[i] = true;
    }

    std::sort(activateAt[n + 1].begin(), activateAt[n + 1].end(), std::greater <int> ());
    for (const int &idx : activateAt[globalRow])
    {
        // std::cout << "activate: " << idx << '\n';
        fenwickActive.update(idx, b[idx].reward);
        fix(idx);
    }

    // std::cout << "dp after: " << n + 1 << '\n';
    // for (int i = 1 ; i <= m ; ++i)
    // {
    //     std::cout << findValue(i) << ' ';
    // } 

    // std::cout << '\n';

    for (globalRow = n ; globalRow >= 1 ; --globalRow)
    {
        // std::cout << "      global: " << globalRow << '\n';
        for (const int &idx : activateAt[globalRow])
        {
            dp[idx] = findValue(idx);
        }
    
        int l = 0, r = m + 1, mid;
        while (l < r - 1)
        {
            mid = (l + r) / 2;
            if (prefixA[globalRow] + prefixB[mid - 1] <= a[globalRow].limit) l = mid;
            else r = mid;
        }

        if (l > 0)
        {
            dp[l] = findValue(l);
        }

        for (const int &idx : activateAt[globalRow])
        {
            // std::cout << "      activate: " << idx << '\n';
            fenwickActive.update(idx, b[idx].reward);
        }

        if (l > 0) activateAt[globalRow].push_back(l);
        applyUpdate(l, a[globalRow].reward);

        dp[m + 1] = dpBorderM[globalRow];
        activateAt[globalRow].push_back(m);
        std::sort(activateAt[globalRow].begin(), activateAt[globalRow].end(), std::greater <int> ());

        // std::cout << "after applying\n";
        // for (int i = 1 ; i <= m ; ++i)
        // {
        //     std::cout << findValue(i) << ' ';
        // } 

        // std::cout << '\n';

        // std::cout << "next is\n";
        // for (int i = 1 ; i <= m ; ++i)
        // {
        //     std::cout << fenwickNext.query(i) - fenwickNext.query(i - 1);
        // }

        // std::cout << '\n';
        for (const int &idx : activateAt[globalRow])
        {
            // std::cout << "fix: " << idx << '\n';
            fix(idx);
            if (idx > 1) fix(idx - 1);
        }

        for (int idx = m ; idx >= 1 ; --idx)
        {
            fix(idx);
        }

        // std::cout << "dp after: " << globalRow << '\n';
        // for (int i = 1 ; i <= m ; ++i)
        // {
        //     std::cout << findValue(i) << ' ';
        // } 

        // std::cout << '\n';
        // std::cout << "active\n";
        // for (int i = 1 ; i <= m ; ++i)
        // {
        //     std::cout << isActive[i] << ' ';
        // }

        // std::cout << '\n';
        // std::cout << "next\n";
        // for (int i = 1 ; i <= m ; ++i)
        // {
        //     std::cout << isNext[i] << ' ';
        // }

        // std::cout << '\n';
    }

    globalRow++;
    std::cout << findValue(1) << '\n';
}

void input()
{
    std::cin >> n >> m;
    for (int i = 1 ; i <= n ; ++i)
    {
        std::cin >> a[i].time >> a[i].limit >> a[i].reward;
        a[i].idx = i;
        a[i].type = false;
    }

    for (int i = 1 ; i <= m ; ++i)
    {
        std::cin >> b[i].time >> b[i].limit >> b[i].reward;
        b[i].idx = i;
        a[i].type = true;
    }
}

void fastIOI()
{
    std::ios_base :: sync_with_stdio(0);
    std::cout.tie(nullptr);
    std::cin.tie(nullptr);
}

signed main()
{
    fastIOI();
    input();
    solve();

    return 0;
}

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 10033 ms 34512 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #2
3.0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 12888 KB Output is correct
2 Correct 2 ms 12888 KB Output is correct
3 Correct 2 ms 12892 KB Output is correct
4 Correct 2 ms 12892 KB Output is correct
5 Correct 2 ms 12892 KB Output is correct
6 Correct 2 ms 12892 KB Output is correct
7 Correct 2 ms 12892 KB Output is correct
8 Correct 2 ms 12888 KB Output is correct
9 Correct 2 ms 12892 KB Output is correct
10 Correct 2 ms 12908 KB Output is correct
11 Correct 2 ms 12888 KB Output is correct
12 Correct 2 ms 12892 KB Output is correct
13 Correct 2 ms 12892 KB Output is correct
14 Correct 2 ms 12892 KB Output is correct
15 Correct 2 ms 12892 KB Output is correct
16 Correct 2 ms 12892 KB Output is correct

Subtask #3
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 12888 KB Output is correct
2 Correct 2 ms 12888 KB Output is correct
3 Correct 2 ms 12892 KB Output is correct
4 Correct 2 ms 12892 KB Output is correct
5 Correct 2 ms 12892 KB Output is correct
6 Correct 2 ms 12892 KB Output is correct
7 Correct 2 ms 12892 KB Output is correct
8 Correct 2 ms 12888 KB Output is correct
9 Correct 2 ms 12892 KB Output is correct
10 Correct 2 ms 12908 KB Output is correct
11 Correct 2 ms 12888 KB Output is correct
12 Correct 2 ms 12892 KB Output is correct
13 Correct 2 ms 12892 KB Output is correct
14 Correct 2 ms 12892 KB Output is correct
15 Correct 2 ms 12892 KB Output is correct
16 Correct 2 ms 12892 KB Output is correct
17 Correct 226 ms 13040 KB Output is correct
18 Correct 228 ms 12892 KB Output is correct
19 Correct 498 ms 13396 KB Output is correct
20 Correct 443 ms 13136 KB Output is correct
21 Correct 492 ms 13120 KB Output is correct
22 Correct 500 ms 13140 KB Output is correct
23 Correct 500 ms 12892 KB Output is correct

Subtask #4
0 / 39.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 12888 KB Output is correct
2 Correct 2 ms 12888 KB Output is correct
3 Correct 2 ms 12892 KB Output is correct
4 Correct 2 ms 12892 KB Output is correct
5 Correct 2 ms 12892 KB Output is correct
6 Correct 2 ms 12892 KB Output is correct
7 Correct 2 ms 12892 KB Output is correct
8 Correct 2 ms 12888 KB Output is correct
9 Correct 2 ms 12892 KB Output is correct
10 Correct 2 ms 12908 KB Output is correct
11 Correct 2 ms 12888 KB Output is correct
12 Correct 2 ms 12892 KB Output is correct
13 Correct 2 ms 12892 KB Output is correct
14 Correct 2 ms 12892 KB Output is correct
15 Correct 2 ms 12892 KB Output is correct
16 Correct 2 ms 12892 KB Output is correct
17 Correct 226 ms 13040 KB Output is correct
18 Correct 228 ms 12892 KB Output is correct
19 Correct 498 ms 13396 KB Output is correct
20 Correct 443 ms 13136 KB Output is correct
21 Correct 492 ms 13120 KB Output is correct
22 Correct 500 ms 13140 KB Output is correct
23 Correct 500 ms 12892 KB Output is correct
24 Execution timed out 10084 ms 42892 KB Time limit exceeded
25 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 12888 KB Output is correct
2 Correct 2 ms 12888 KB Output is correct
3 Correct 2 ms 12892 KB Output is correct
4 Correct 2 ms 12892 KB Output is correct
5 Correct 2 ms 12892 KB Output is correct
6 Correct 2 ms 12892 KB Output is correct
7 Correct 2 ms 12892 KB Output is correct
8 Correct 2 ms 12888 KB Output is correct
9 Correct 2 ms 12892 KB Output is correct
10 Correct 2 ms 12908 KB Output is correct
11 Correct 2 ms 12888 KB Output is correct
12 Correct 2 ms 12892 KB Output is correct
13 Correct 2 ms 12892 KB Output is correct
14 Correct 2 ms 12892 KB Output is correct
15 Correct 2 ms 12892 KB Output is correct
16 Correct 2 ms 12892 KB Output is correct
17 Correct 226 ms 13040 KB Output is correct
18 Correct 228 ms 12892 KB Output is correct
19 Correct 498 ms 13396 KB Output is correct
20 Correct 443 ms 13136 KB Output is correct
21 Correct 492 ms 13120 KB Output is correct
22 Correct 500 ms 13140 KB Output is correct
23 Correct 500 ms 12892 KB Output is correct
24 Execution timed out 10084 ms 42892 KB Time limit exceeded
25 Halted 0 ms 0 KB -

Subtask #6
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 12888 KB Output is correct
2 Correct 2 ms 12888 KB Output is correct
3 Correct 2 ms 12892 KB Output is correct
4 Correct 2 ms 12892 KB Output is correct
5 Correct 2 ms 12892 KB Output is correct
6 Correct 2 ms 12892 KB Output is correct
7 Correct 2 ms 12892 KB Output is correct
8 Correct 2 ms 12888 KB Output is correct
9 Correct 2 ms 12892 KB Output is correct
10 Correct 2 ms 12908 KB Output is correct
11 Correct 2 ms 12888 KB Output is correct
12 Correct 2 ms 12892 KB Output is correct
13 Correct 2 ms 12892 KB Output is correct
14 Correct 2 ms 12892 KB Output is correct
15 Correct 2 ms 12892 KB Output is correct
16 Correct 2 ms 12892 KB Output is correct
17 Correct 226 ms 13040 KB Output is correct
18 Correct 228 ms 12892 KB Output is correct
19 Correct 498 ms 13396 KB Output is correct
20 Correct 443 ms 13136 KB Output is correct
21 Correct 492 ms 13120 KB Output is correct
22 Correct 500 ms 13140 KB Output is correct
23 Correct 500 ms 12892 KB Output is correct
24 Execution timed out 10084 ms 42892 KB Time limit exceeded
25 Halted 0 ms 0 KB -

Subtask #7
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 10033 ms 34512 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #8
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 10033 ms 34512 KB Time limit exceeded
2 Halted 0 ms 0 KB -