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답안 #728391

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
728391 2023-04-22T10:29:49 Z piOOE 푸드 코트 (JOI21_foodcourt) C++17
20 / 100
 1000 ms 47568 KB 
#include <bits/stdc++.h>

using namespace std;
using ll = long long;

namespace SegmentTree {
    struct Info {
        ll sum = 0, mn = 0, mn2 = 3e18;
        int cntmn = 0, len = 0;
    };

    Info operator+(const Info &a, const Info &b) {
        Info res{};
        res.sum = a.sum + b.sum, res.len = a.len + b.len;
        res.mn = min(a.mn, b.mn);
        res.mn2 = min(a.mn == res.mn ? a.mn2 : a.mn, b.mn == res.mn ? b.mn2 : b.mn);
        res.cntmn = (a.mn == res.mn) * a.cntmn + (b.mn == res.mn) * b.cntmn;
        return res;
    }

    vector<Info> t;
    vector<ll> tag;
    int sz = 1;

    void pull(int x) {
        t[x] = t[x << 1] + t[x << 1 | 1];
    }

    void applyAdd(int x, ll tg) {
        tag[x] += tg;
        t[x].sum += t[x].len * tg;
        t[x].mn += tg, t[x].mn2 += tg;
    }

    void applyMin(int x, ll d) {
        if (t[x].mn < d) {
            assert(t[x].mn2 > d);
            t[x].sum += t[x].cntmn * (d - t[x].mn);
            t[x].mn = d;
        }
    }

    void push(int x) {
        if (tag[x]) {
            applyAdd(x << 1, tag[x]);
            applyAdd(x << 1 | 1, tag[x]);
            tag[x] = 0;
        }
        applyMin(x << 1, t[x].mn);
        applyMin(x << 1 | 1, t[x].mn);
    }

    void init(int n) {
        sz = 1 << __lg(n) + !!(n & (n - 1));
        t.assign(sz << 1, {}), tag.assign(sz << 1, {});

        for (int i = 0; i < n; ++i) {
            t[i + sz].cntmn = t[i + sz].len = 1;
        }
        for (int i = sz - 1; i > 0; --i) {
            pull(i);
        }
    }

    void rangeAdd(int l, int r, ll d, int x, int lx, int rx) {
        if (lx >= r || l >= rx) {
            return;
        }
        if (l <= lx && rx <= r) {
            return applyAdd(x, d);
        }
        push(x);
        int mid = (lx + rx) >> 1;
        rangeAdd(l, r, d, x << 1, lx, mid), rangeAdd(l, r, d, x << 1 | 1, mid, rx);
        pull(x);
    }

    void rangeSetMax(int l, int r, ll d, int x = 1, int lx = 0, int rx = sz) {
        if (l >= rx || lx >= r || t[x].mn >= d) {
            return;
        }
        if (l <= lx && rx <= r && t[x].mn2 > d) {
            return applyMin(x, d);
        }
        push(x);
        int mid = lx + rx >> 1;
        rangeSetMax(l, r, d, x << 1, lx, mid), rangeSetMax(l, r, d, x << 1 | 1, mid, rx);
        pull(x);
    }

    void rangeAdd(int l, int r, ll d) {
        rangeAdd(l, r, d, 1, 0, sz);
        rangeSetMax(l, r, 0);
    }

    ll sum(int i, int x = 1, int lx = 0, int rx = sz) {
        while (x < sz) {
            push(x);
            int mid = lx + rx >> 1;
            if (i < mid) {
                x = x << 1;
                rx = mid;
            } else {
                x = x << 1 | 1;
                lx = mid;
            }
        }
        return t[x].sum;
    }
}

template<typename T>
struct Fenwick {
    int n;
    vector<T> a;

    Fenwick() = default;
    explicit Fenwick(int n) : n(n), a(n + 1) {}

    void modify(int x, T v) {
        for (int i = x + 1; i <= n; i += i & -i) {
            a[i] += v;
        }
    }

    void modify(int l, int r, T v) {
        if (l >= r) return;
        modify(l, v), modify(r, -v);
    }

    T sum(int x) {
        T ans = 0;
        for (int i = x + 1; i > 0; i -= i & -i) {
            ans += a[i];
        }
        return ans;
    }
};


int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int n, m, q;
    cin >> n >> m >> q;

    struct Query {
        int t, l, r, c;
        ll k;
    };
    vector<Query> queries(q);

    vector<vector<int>> que(q);
    vector<int> L(q, -1), R(q, -1);
    vector<ll> aim(q);

    Fenwick<ll> fn(n);
    SegmentTree::init(n);

    for (int i = 0; i < q; ++i) {
        cin >> queries[i].t;

        if (queries[i].t == 1) {
            cin >> queries[i].l >> queries[i].r >> queries[i].c >> queries[i].k;
        } else if (queries[i].t == 2) {
            cin >> queries[i].l >> queries[i].r >> queries[i].k;
        } else {
            cin >> queries[i].l >> queries[i].k;
        }

        queries[i].l -= 1;

        if (queries[i].t == 1) {
            SegmentTree::rangeAdd(queries[i].l, queries[i].r, queries[i].k);
        } else if (queries[i].t == 2) {
            SegmentTree::rangeAdd(queries[i].l, queries[i].r, -queries[i].k);
            fn.modify(queries[i].l, queries[i].r, queries[i].k);
        } else {
            ll s = fn.sum(queries[i].l);
            ll have = SegmentTree::sum(queries[i].l) + s;
            ll need = queries[i].k + s;

            if (have >= need) {
                R[i] = i;
                aim[i] = need;
            } else {
                R[i] = -1;
            }
        }
    }

    while (true) {
        for (int i = 0; i < q; ++i) {
            que[i].clear();
        }

        bool found = false;

        for (int i = 0; i < q; ++i) {
            if (L[i] + 1 < R[i]) {
                found = true;
                que[L[i] + R[i] >> 1].push_back(i);
            }
        }

        if (!found) {
            break;
        }

        fn = Fenwick<ll>(n);
        SegmentTree::init(n);

        for (int i = 0; i < q; ++i) {
            if (queries[i].t == 1) {
                SegmentTree::rangeAdd(queries[i].l, queries[i].r, queries[i].k);
            } else if (queries[i].t == 2) {
                SegmentTree::rangeAdd(queries[i].l, queries[i].r, -queries[i].k);
                fn.modify(queries[i].l, queries[i].r, queries[i].k);
            }

            for (int j : que[i]) {
                ll need = aim[j];
                ll have = SegmentTree::sum(queries[j].l) + fn.sum(queries[j].l);

                if (have >= need) {
                    R[j] = i;
                } else {
                    L[j] = i;
                }
            }
        }
    }

    for (int i = 0; i < q; ++i) {
        if (queries[i].t == 3) {
            if (R[i] == -1) {
                cout << 0 << '\n';
            } else {
                cout << queries[R[i]].c << '\n';
            }
        }
    }


    return 0;
}

Compilation message

foodcourt.cpp: In function 'void SegmentTree::init(int)':
foodcourt.cpp:54:27: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
   54 |         sz = 1 << __lg(n) + !!(n & (n - 1));
      |                   ~~~~~~~~^~~~~~~~~~~~~~~~~
foodcourt.cpp: In function 'void SegmentTree::rangeSetMax(int, int, ll, int, int, int)':
foodcourt.cpp:86:22: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   86 |         int mid = lx + rx >> 1;
      |                   ~~~^~~~
foodcourt.cpp: In function 'll SegmentTree::sum(int, int, int, int)':
foodcourt.cpp:99:26: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   99 |             int mid = lx + rx >> 1;
      |                       ~~~^~~~
foodcourt.cpp: In function 'int main()':
foodcourt.cpp:203:26: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  203 |                 que[L[i] + R[i] >> 1].push_back(i);

Subtask #1
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 668 KB Output is correct
2 Correct 15 ms 728 KB Output is correct
3 Correct 9 ms 660 KB Output is correct
4 Correct 13 ms 716 KB Output is correct
5 Correct 2 ms 468 KB Output is correct
6 Correct 2 ms 460 KB Output is correct
7 Correct 14 ms 716 KB Output is correct
8 Correct 15 ms 716 KB Output is correct
9 Correct 18 ms 736 KB Output is correct
10 Correct 15 ms 724 KB Output is correct
11 Correct 15 ms 724 KB Output is correct
12 Correct 17 ms 712 KB Output is correct
13 Correct 6 ms 596 KB Output is correct
14 Correct 5 ms 724 KB Output is correct
15 Correct 8 ms 660 KB Output is correct
16 Correct 11 ms 724 KB Output is correct
17 Correct 15 ms 596 KB Output is correct
18 Correct 18 ms 664 KB Output is correct
19 Correct 9 ms 596 KB Output is correct
20 Correct 11 ms 596 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 668 KB Output is correct
2 Correct 15 ms 728 KB Output is correct
3 Correct 9 ms 660 KB Output is correct
4 Correct 13 ms 716 KB Output is correct
5 Correct 2 ms 468 KB Output is correct
6 Correct 2 ms 460 KB Output is correct
7 Correct 14 ms 716 KB Output is correct
8 Correct 15 ms 716 KB Output is correct
9 Correct 18 ms 736 KB Output is correct
10 Correct 15 ms 724 KB Output is correct
11 Correct 15 ms 724 KB Output is correct
12 Correct 17 ms 712 KB Output is correct
13 Correct 6 ms 596 KB Output is correct
14 Correct 5 ms 724 KB Output is correct
15 Correct 8 ms 660 KB Output is correct
16 Correct 11 ms 724 KB Output is correct
17 Correct 15 ms 596 KB Output is correct
18 Correct 18 ms 664 KB Output is correct
19 Correct 9 ms 596 KB Output is correct
20 Correct 11 ms 596 KB Output is correct
21 Correct 16 ms 732 KB Output is correct
22 Correct 14 ms 740 KB Output is correct
23 Correct 13 ms 712 KB Output is correct
24 Correct 14 ms 708 KB Output is correct
25 Correct 2 ms 468 KB Output is correct
26 Correct 2 ms 468 KB Output is correct
27 Correct 14 ms 724 KB Output is correct
28 Correct 13 ms 764 KB Output is correct
29 Correct 17 ms 724 KB Output is correct
30 Correct 14 ms 852 KB Output is correct
31 Correct 18 ms 764 KB Output is correct
32 Correct 20 ms 720 KB Output is correct
33 Correct 6 ms 724 KB Output is correct
34 Correct 6 ms 676 KB Output is correct
35 Correct 10 ms 664 KB Output is correct
36 Correct 12 ms 724 KB Output is correct
37 Correct 7 ms 596 KB Output is correct
38 Correct 10 ms 596 KB Output is correct

Subtask #3
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1046 ms 12236 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1067 ms 47568 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 668 KB Output is correct
2 Correct 15 ms 728 KB Output is correct
3 Correct 9 ms 660 KB Output is correct
4 Correct 13 ms 716 KB Output is correct
5 Correct 2 ms 468 KB Output is correct
6 Correct 2 ms 460 KB Output is correct
7 Correct 14 ms 716 KB Output is correct
8 Correct 15 ms 716 KB Output is correct
9 Correct 18 ms 736 KB Output is correct
10 Correct 15 ms 724 KB Output is correct
11 Correct 15 ms 724 KB Output is correct
12 Correct 17 ms 712 KB Output is correct
13 Correct 6 ms 596 KB Output is correct
14 Correct 5 ms 724 KB Output is correct
15 Correct 8 ms 660 KB Output is correct
16 Correct 11 ms 724 KB Output is correct
17 Correct 15 ms 596 KB Output is correct
18 Correct 18 ms 664 KB Output is correct
19 Correct 9 ms 596 KB Output is correct
20 Correct 11 ms 596 KB Output is correct
21 Execution timed out 1046 ms 12236 KB Time limit exceeded
22 Halted 0 ms 0 KB -

Subtask #6
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 680 ms 13744 KB Output is correct
2 Correct 720 ms 14208 KB Output is correct
3 Correct 777 ms 14572 KB Output is correct
4 Correct 556 ms 12252 KB Output is correct
5 Correct 674 ms 13464 KB Output is correct
6 Correct 768 ms 14616 KB Output is correct
7 Correct 62 ms 6860 KB Output is correct
8 Correct 63 ms 6376 KB Output is correct
9 Correct 390 ms 14264 KB Output is correct
10 Correct 439 ms 11972 KB Output is correct
11 Correct 633 ms 14392 KB Output is correct
12 Correct 646 ms 14420 KB Output is correct

Subtask #7
0 / 26.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 668 KB Output is correct
2 Correct 15 ms 728 KB Output is correct
3 Correct 9 ms 660 KB Output is correct
4 Correct 13 ms 716 KB Output is correct
5 Correct 2 ms 468 KB Output is correct
6 Correct 2 ms 460 KB Output is correct
7 Correct 14 ms 716 KB Output is correct
8 Correct 15 ms 716 KB Output is correct
9 Correct 18 ms 736 KB Output is correct
10 Correct 15 ms 724 KB Output is correct
11 Correct 15 ms 724 KB Output is correct
12 Correct 17 ms 712 KB Output is correct
13 Correct 6 ms 596 KB Output is correct
14 Correct 5 ms 724 KB Output is correct
15 Correct 8 ms 660 KB Output is correct
16 Correct 11 ms 724 KB Output is correct
17 Correct 15 ms 596 KB Output is correct
18 Correct 18 ms 664 KB Output is correct
19 Correct 9 ms 596 KB Output is correct
20 Correct 11 ms 596 KB Output is correct
21 Correct 16 ms 732 KB Output is correct
22 Correct 14 ms 740 KB Output is correct
23 Correct 13 ms 712 KB Output is correct
24 Correct 14 ms 708 KB Output is correct
25 Correct 2 ms 468 KB Output is correct
26 Correct 2 ms 468 KB Output is correct
27 Correct 14 ms 724 KB Output is correct
28 Correct 13 ms 764 KB Output is correct
29 Correct 17 ms 724 KB Output is correct
30 Correct 14 ms 852 KB Output is correct
31 Correct 18 ms 764 KB Output is correct
32 Correct 20 ms 720 KB Output is correct
33 Correct 6 ms 724 KB Output is correct
34 Correct 6 ms 676 KB Output is correct
35 Correct 10 ms 664 KB Output is correct
36 Correct 12 ms 724 KB Output is correct
37 Correct 7 ms 596 KB Output is correct
38 Correct 10 ms 596 KB Output is correct
39 Execution timed out 1046 ms 12236 KB Time limit exceeded
40 Halted 0 ms 0 KB -

Subtask #8
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 668 KB Output is correct
2 Correct 15 ms 728 KB Output is correct
3 Correct 9 ms 660 KB Output is correct
4 Correct 13 ms 716 KB Output is correct
5 Correct 2 ms 468 KB Output is correct
6 Correct 2 ms 460 KB Output is correct
7 Correct 14 ms 716 KB Output is correct
8 Correct 15 ms 716 KB Output is correct
9 Correct 18 ms 736 KB Output is correct
10 Correct 15 ms 724 KB Output is correct
11 Correct 15 ms 724 KB Output is correct
12 Correct 17 ms 712 KB Output is correct
13 Correct 6 ms 596 KB Output is correct
14 Correct 5 ms 724 KB Output is correct
15 Correct 8 ms 660 KB Output is correct
16 Correct 11 ms 724 KB Output is correct
17 Correct 15 ms 596 KB Output is correct
18 Correct 18 ms 664 KB Output is correct
19 Correct 9 ms 596 KB Output is correct
20 Correct 11 ms 596 KB Output is correct
21 Correct 16 ms 732 KB Output is correct
22 Correct 14 ms 740 KB Output is correct
23 Correct 13 ms 712 KB Output is correct
24 Correct 14 ms 708 KB Output is correct
25 Correct 2 ms 468 KB Output is correct
26 Correct 2 ms 468 KB Output is correct
27 Correct 14 ms 724 KB Output is correct
28 Correct 13 ms 764 KB Output is correct
29 Correct 17 ms 724 KB Output is correct
30 Correct 14 ms 852 KB Output is correct
31 Correct 18 ms 764 KB Output is correct
32 Correct 20 ms 720 KB Output is correct
33 Correct 6 ms 724 KB Output is correct
34 Correct 6 ms 676 KB Output is correct
35 Correct 10 ms 664 KB Output is correct
36 Correct 12 ms 724 KB Output is correct
37 Correct 7 ms 596 KB Output is correct
38 Correct 10 ms 596 KB Output is correct
39 Execution timed out 1046 ms 12236 KB Time limit exceeded
40 Halted 0 ms 0 KB -