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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
#796463#5466. Permutation CompressionyyksamWA 1ms3640kbC++204.0kb2024-12-01 19:28:362024-12-01 19:28:37

Judging History

你现在查看的是最新测评结果

  • [2024-12-01 19:28:37]
  • 评测
  • 测评结果:WA
  • 用时:1ms
  • 内存:3640kb
  • [2024-12-01 19:28:36]
  • 提交

answer

#include<bits/stdc++.h>
#include<bits/extc++.h>
using namespace std;
using namespace __gnu_cxx;
using namespace __gnu_pbds;
typedef long long ll;
typedef pair<int, int> pii;
const int N = 2e5 + 10;
const int inf = 0x3f3f3f3f;

int lowbit(int x) {
    return (x & (-x));
}

struct tree_array {
    int n;
    vector<ll> t1, t2;

    tree_array(int n) {
        this->n = n;
        t1.resize(n + 10);
        t2.resize(n + 10);
    }

    void insert(int l, int r, ll x) {
        update(l, x);
        update(r + 1, -x);
    }

    void update(int idx, ll x) {
        for (int i = idx; i <= n; i += lowbit(i)) {
            t1[i] += x;
            t2[i] += (ll)idx * x;
        }
    }

    ll getsum(int idx) {
        ll res = 0;
        for (int i = idx; i; i -= lowbit(i)) {
            res += ((ll)idx + 1) * t1[i] - t2[i];
        }
        return res;
    }
};

int stk[N], top, ix[N];
tree<pair<int, int>, null_type, less<>, rb_tree_tag, tree_order_statistics_node_update> treap;

void work() {
    int n, m, k, cnt = 0;
    cin >> n >> m >> k;
    tree_array left(n), right(n);
    treap.clear();
    vector<int> a(n + 10), b(m + 10), c(k + 10);
    vector<bool> isc(n + 10);
    for (int i = 1; i <= n; i++) cin >> a[i];
    for (int i = 1; i <= m; i++) cin >> b[i];
    for (int i = 1; i <= k; i++) {
        cin >> c[i];
        treap.insert({c[i], ++cnt});
    }
    if (k < n - m) {
        cout << "NO\n";
        return;
    }
    int idx = 1;
    vector<pii> gai;
    for (int i = 1; i <= m; i++) {
        while (a[idx] != b[i] && idx <= n) {
            isc[idx] = true;
            gai.emplace_back(a[idx], idx);
            idx++;
        }
        if (idx > n) {
            cout << "NO\n";
            return;
        }
        idx++;
    }
    while (idx <= n) isc[idx++] = true;
    sort(gai.begin(), gai.end(), [&](pii a, pii b) {
        return a.first > b.first;
    });
    auto bin_search = [&](int k, int def) {
        int l = 1, r = top, res = def;
        while (l <= r) {
            int mid = l + r >> 1;
            if (stk[mid] > k) {
                res = ix[mid];
                r = mid - 1;
            }
            else l = mid + 1;
        }
        return res;
    };
    top = 0;
    for (int i = 1; i <= n; i++) {
        if (isc[i]) {
            //cout << i << " " << i - bin_search(a[i], 0) << '\n';
            left.insert(i, i, i - bin_search(a[i], 0));
        }
        else {
            while (top && stk[top] <= a[i]) top--;
            stk[++top] = a[i];
            ix[top] = i;
        }
    }
    top = 0;
    for (int i = n; i >= 1; i--) {
        if (isc[i]) {
            //cout << i << " " << bin_search(a[i], n + 1) - i << '\n';
            right.insert(i, i, bin_search(a[i], n + 1) - i);
        }
        else {
            while (top && stk[top] <= a[i]) top--;
            stk[++top] = a[i];
            ix[top] = i;
        }
    }
    for (int i = 0; i < gai.size(); i++) {
        int num = gai[i].first, dis = gai[i].second;
        int l = 1, r = k - i, ans = -1;
        int l_dis = left.getsum(dis) - left.getsum(dis - 1);
        int r_dis = right.getsum(dis) - right.getsum(dis - 1);
        while (l <= r) {
            int mid = l + r >> 1;
            int len = (*treap.find_by_order(mid - 1)).first;
            if (len <=  l_dis + r_dis - 1) {
                ans = len;
                l = mid + 1;
            }
            else r = mid - 1;
        }
        if (ans == -1) {
            cout << "NO\n";
            return;
        }
        //cout << ans << '\n';
        treap.erase(treap.upper_bound({ans, 0}));
        left.insert(dis + 1, dis + r_dis - 1, -1);
        right.insert(dis - l_dis + 1, dis - 1, -1);
    }
    cout << "YES\n";
}

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0), cout.tie(0);
    int T = 1;
    cin >> T;
    while (T--) {
        work();
    }
    return 0;
}

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 3564kb

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: 3640kb

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
NO
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
Y...

result:

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