Submission #797146

#	Time	Username	Problem	Language	Result	Execution time	Memory
797146		vjudge1	푸드 코트 (JOI21_foodcourt)	C++17	0 / 100	477 ms	524288 KiB

foodcourt

#ifdef Home
#define _GLIBCXX_DEBUG
#endif // Home

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef long double ld;

struct SlideWindow{
    deque < pair < ll, int > > L, R;
};

void del(SlideWindow &x, int K) {
    if(x.L.empty() || x.L.back().first < K) {
        if(!x.L.empty()) {
            K -= x.L.back().first;
        }
        for(; !x.L.empty(); x.L.pop_back());
        for(int cnt; !x.R.empty();) {
            cnt = x.R.back().first - (x.R.size() == 1 ? 0ll : x.R[x.R.size() - 2].first);
            x.L.push_back({(x.L.empty() ? 0ll : x.L.back().first) + cnt, x.R.back().second});
            x.R.pop_back();
        }
    }
    for(int cnt; K && !x.L.empty();) {
        cnt = x.L.back().first - (x.L.size() == 1 ? 0ll : x.L[x.L.size() - 2].first);
        if(K < cnt) {
            x.L.back().first -= K;
            K = 0;
        } else {
            K -= cnt;
            x.L.pop_back();
        }
    }
}

void add(SlideWindow &x, ll K, int C) {
    if(!C) {
        del(x, K);
        return;
    }
    x.R.push_back({K + (x.R.empty() ? 0ll : x.R.back().first), C});
}

int get(SlideWindow &x, ll K) {
    if((x.L.empty() ? 0ll : x.L.back().first) + (x.R.empty() ? 0ll : x.R.back().first) < K) {
        return 0;
    }
    if(x.L.empty() || x.L.back().first < K) {
        if(!x.L.empty()) {
            K -= x.L.back().first;
        }
        int l = -1, r = x.R.size() - 1, m;
        for(; l + 1 < r;) {
            m = (l + r) / 2;
            (x.R[m].first < K ? l : r) = m;
        }
        return x.R.empty() ? 0ll : x.R[r].second;
    } 
    int l = 0, r = x.L.size(), m;
    for(; l + 1 < r;) {
        m = (l + r) / 2;
        (x.L[m].first < K ? r : l) = m;
    }
    return x.L.empty() ? 0ll : x.L[l].second;
}

const int N = 1<<18;

vector < SlideWindow > Shops;
vector < queue < pair < ll, int > > > tree;

void relax(int x, int i) {
    for(; !tree[x].empty(); tree[x].pop()) {
        add(Shops[i], tree[x].front().first, tree[x].front().second);
    }
}

void Push(pair < int, int > tmp, int x) {
    if(tree[x].empty() || tree[x].back().second != tmp.second) {
        tree[x].push(tmp);
        return;
    }
    tree[x].back().first += tmp.first;
}

void push(int x) {
    int l = x * 2 + 1, r = x * 2 + 2;
    for(; !tree[x].empty(); tree[x].pop()) {
        Push(tree[x].front(), l);
        Push(tree[x].front(), r);
    }
}

void add_to_que(int &l, int &r, pair < int, int > &tmp, int x, int lx, int rx) {
    if(r <= lx || rx <= l) {
        return;
    }
    if(l <= lx && rx <= r) {
        Push(tmp, x);
        return;
    }
    push(x);
    int m = (lx + rx) / 2;
    add_to_que(l, r, tmp, x * 2 + 1, lx, m);
    add_to_que(l, r, tmp, x * 2 + 2, m, rx);
}

int get(int &pos, ll &K, int x, int lx, int rx) {
    if(lx + 1 == rx) {
        relax(x, lx);
        return get(Shops[lx], K);
    }
    push(x);
    int m = (lx + rx) / 2;
    return pos < m ? 
    get(pos, K, x * 2 + 1, lx, m) :
    get(pos, K, x * 2 + 2, m, rx) ;
}

main() {
#ifdef Home
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif // Home
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    int n, m, q, k = 1;
    pair < int, int > tmp;
    ll T;
    for(cin >> n >> m >> q; k <= n; k <<= 1);
    tree.resize(k << 1);
    Shops.resize(m + 1);
    for(int t, L, R, C, K; q --> 0;) {
        cin >> t;
        if(t == 1) {
            cin >> L >> R >> C >> K;
            tmp = {K, C};
            ++ R;
            add_to_que(L, R, tmp, 0, 0, k);
        } else if(t == 2) {
            cin >> L >> R >> K;
            ++ R;
            tmp = {K, 0};
            add_to_que(L, R, tmp, 0, 0, k);
        } else {
            cin >> C >> T;
            cout << get(C, T, 0, 0, k) << '\n';
        }
    }
}

Compilation message (stderr)

foodcourt.cpp:124:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
  124 | main() {
      | ^~~~

• Subtask 1: 0 / 2
• Subtask 2: 0 / 5
• Subtask 3: 0 / 7
• Subtask 4: 0 / 21
• Subtask 5: 0 / 15
• Subtask 6: 0 / 13
• Subtask 7: 0 / 26
• Subtask 8: 0 / 11