QOJ.ac

QOJ

ID题目提交者结果用时内存语言文件大小提交时间测评时间
#547472#5466. Permutation CompressionSunlight9WA 1ms5720kbC++204.9kb2024-09-04 21:59:542024-09-04 22:00:01

Judging History

你现在查看的是最新测评结果

  • [2024-09-04 22:00:01]
  • 评测
  • 测评结果:WA
  • 用时:1ms
  • 内存:5720kb
  • [2024-09-04 21:59:54]
  • 提交

answer

#include <bits/stdc++.h>

using namespace std;
using ll = long long;

constexpr int Maxn = 2e5 + 3;
struct Segmentree {
    int maxx[Maxn * 4], lzt[Maxn * 4];

    int lc(int p) {return p << 1;}
    int rc(int p) {return p << 1 | 1;}

    void pushup(int p) {
        maxx[p] = max(maxx[lc(p)], maxx[rc(p)]);
    }

//    void pushdown(int l, int r, int mid, int p) {
//        if (!lzt[p]) return;
//        maxx[lc(p)] += lzt[p];
//        maxx[rc(p)] += lzt[p];
//        lzt[lc(p)] += lzt[p];
//        lzt[rc(p)] += lzt[p];
//        lzt[p] = 0;
//    }

    void build(int l, int r, int p, vector<int> &a) {
        if (l == r) {
            maxx[p] = a[l];
            lzt[p] = 0;
            return;
        }
        int mid = l + ((r - l) >> 1);
        build(l, mid, lc(p), a);
        build(mid + 1, r, rc(p), a);
        pushup(p);
    }

    //[l,r]是结点p覆盖的区间, [s,t]是要修改的区间
    void modify(int l, int r, int d, int s, int t, int p) {
        if (s <= l && r <= t) {
            maxx[p] += d;
//            lzt[p] += d;
            return;
        }
        int mid = l + ((r - l) >> 1);
//        pushdown(l, r, mid, p);
        if (s <= mid) modify(l, mid, d, s, t, lc(p));
        if (t > mid) modify(mid + 1, r, d, s, t, rc(p));
        pushup(p);
    }

    int query(int l, int r, int s, int t, int p) {
        if (s <= l && r <= t) return maxx[p];
        int mid = l + ((r - l) >> 1);
        int res = 0;
//        pushdown(l, r, mid, p);
        if (s <= mid) res = max(res, query(l, mid, s, t, lc(p)));
        if (t > mid) res = max(res, query(mid + 1, r, s, t, rc(p)));
        return res;
    }

    //从右往左找第一个大于val的位置, 从t到s
    int query1(int l, int r, int s, int t, int p, int val) {
        if (l == r) return l;
        int mid = l + ((r - l) >> 1);
//        pushdown(l, r, mid, p);
        int res = 0;
        if (t > mid) {
            if (maxx[rc(p)] > val) {
                res = query1(mid + 1, r, s, t, rc(p), val);
            }
        }
        if (res) return res;
        if (s <= mid) {
            if (maxx[lc(p)] > val) {
                res = query1(l, mid, s, t, lc(p), val);
            }
        }
        return res;
    }

    int query2(int l, int r, int s, int t, int p, int val) {
        if (l == r) return l;
        int mid = l + ((r - l) >> 1);
//        pushdown(l, r, mid, p);
        int res = 0;
        if (s <= mid) {
            if (maxx[lc(p)] > val) {
                res = query2(l, mid, s, t, lc(p), val);
            }
        }
        if (res) return res;
        if (t > mid) {
            if (maxx[rc(p)] > val) {
                res = query2(mid + 1, r, s, t, rc(p), val);
            }
        }
        return res;
    }
}seg;

void solve() {
    int n, m, k;
    cin >> n >> m >> k;

    vector<int> a(n + 1);
    for (int i = 1; i <= n; ++i) {
        cin >> a[i];
    }
    vector<int> b(m + 1);
    for (int i = 1; i <= m; ++i) {
        cin >> b[i];
    }
    vector<int> len(k + 1);
    multiset<int> s;
    for (int i = 1; i <= k; ++i) {
        cin >> len[i];
        s.insert(-len[i]);
    }

    int it = 1;
    vector<array<int, 2> > tod;
    for (int i = 1; i <= n; ++i) {
        if (it <= m && a[i] == b[it]) {
            it++;
        } else {
            tod.push_back({a[i], i});
        }
    }
    if (it <= m) {
        cout << "NO\n";
        return;
    }

    sort(tod.begin(), tod.end(), greater());
//    for (int i = 0; i < ssize(tod); ++i) {
//        cerr << tod[i] << " \n"[i == ssize(tod) - 1];
//    }
    seg.build(1, n, 1, a);
//    cerr << seg.query1(1, n, 1, 4, 1, 5) << '\n';
//    cerr << seg.query2(1, n, 4, n, 1, 10) << '\n';
    for (int i = 0; i < ssize(tod); ++i) {
        int l = seg.query1(1, n, 1, tod[i][1], 1, tod[i][0]);
        if (!l) l = 1;
        else l++;
        int r = seg.query2(1, n, tod[i][1], n, 1, tod[i][0]);
        if (!r) r = n;
        else r--;
        int len = r - l + 1;
//        cerr << tod[i][0] << ' ' << l << ' ' << r << ' ' << len << " \n";
        auto f = s.lower_bound(-len);
        if (f == s.end()) {
            cout << "NO\n";
            return;
        } else {
//            s.erase(f);
            s.extract(-len);
            seg.modify(1, n, -tod[i][0], tod[i][1], tod[i][1], 1);
        }
    }

    it = 1;
    for (int i = 1; i <= n; ++i) {
        int x = seg.query(1, n, i, i, 1);
        if (x) {
            if (it > m) {
                cout << "NO\n";
                return;
            }
            if (x != b[it]) {
                cout << "NO\n";
                return;
            }
            it++;
        }
    }

    cout << "YES\n";
}

int main() {
    cin.tie(nullptr) -> sync_with_stdio(false);

    int _;
    cin >> _;
    while (_--) solve();

    return 0;
}

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 5720kb

input:

3
5 2 3
5 1 3 2 4
5 2
1 2 4
5 5 5
1 2 3 4 5
1 2 3 4 5
1 2 3 4 5
3 2 2
3 1 2
3 2
2 3

output:

YES
YES
NO

result:

ok 3 lines

Test #2:

score: -100
Wrong Answer
time: 1ms
memory: 5624kb

input:

100
2 1 2
2 1
2
1 1
2 1 2
1 2
1
2 2
2 1 1
1 2
1
2
6 1 5
3 4 2 5 6 1
3
5 2 1 1 1
6 1 6
2 1 3 6 4 5
1
4 1 2 2 1 4
3 3 2
2 1 3
2 1 3
2 2
1 1 1
1
1
1
1 1 1
1
1
1
2 1 2
2 1
2
1 2
4 4 3
2 1 3 4
2 1 3 4
4 3 1
1 1 1
1
1
1
6 5 1
6 2 5 4 3 1
6 2 4 3 1
4
1 1 1
1
1
1
6 5 3
3 6 1 4 5 2
3 6 1 4 2
3 3 4
4 3 4
3 4 ...

output:

YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
YES
NO
YES
YES
YES
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
...

result:

wrong answer 28th lines differ - expected: 'NO', found: 'YES'