Submission #797233

#	Time	Username	Problem	Language	Result	Execution time	Memory
797233		vjudge1	Food Court (JOI21_foodcourt)	C++17	0 / 100	1079 ms	112624 KiB

foodcourt

#ifdef Home
#define _GLIBCXX_DEBUG
#endif // Home

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef long double ld;
typedef deque < pair < ll, int > > QQ;

map < int, QQ > ShopsL, ShopsR;

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

void add(int i, ll K, int C) {
    if(!C) {
        del(i, K);
        return;
    }
    ShopsR[i].push_back({K + (ShopsR[i].empty() ? 0ll : ShopsR[i].back().first), C});
}

int Get(int i, ll K) {
    if((ShopsL[i].empty() ? 0ll : ShopsL[i].back().first) + (ShopsR[i].empty() ? 0ll : ShopsR[i].back().first) < K) {
        return 0;
    }
    if(ShopsL[i].empty() || ShopsL[i].back().first < K) {
        if(!ShopsL[i].empty()) {
            K -= ShopsL[i].back().first;
        }
        int l = -1, r = ShopsR[i].size() - 1, m;
        for(; l + 1 < r;) {
            m = (l + r) / 2;
            (ShopsR[i][m].first < K ? l : r) = m;
        }
        return ShopsR[i].empty() ? 0ll : ShopsR[i][r].second;
    } 
    int l = 0, r = ShopsL[i].size(), m;
    for(; l + 1 < r;) {
        m = (l + r) / 2;
        (ShopsL[i][m].first < K ? r : l) = m;
    }
    return ShopsL[i].empty() ? 0ll : ShopsL[i][l].second;
}

map < int, queue < pair < ll, int > > > tree;

void relax(int x, int i) {
    for(; !tree[x].empty(); tree[x].pop()) {
        add(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(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);
    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:120:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
  120 | 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