QOJ.ac

QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#281046#7782. Ursa Minorucup-team1191#WA 578ms184052kbC++208.2kb2023-12-09 20:24:252023-12-09 20:24:26

Judging History

你现在查看的是最新测评结果

  • [2023-12-09 20:24:26]
  • 评测
  • 测评结果:WA
  • 用时:578ms
  • 内存:184052kb
  • [2023-12-09 20:24:25]
  • 提交

answer

/*
    author:  Maksim1744
    created: 09.12.2023 14:51:11
*/

#include "bits/stdc++.h"

using namespace std;

using ll = long long;
using ld = long double;

#define mp   make_pair
#define pb   push_back
#define eb   emplace_back

#define sum(a)     ( accumulate ((a).begin(), (a).end(), 0ll))
#define mine(a)    (*min_element((a).begin(), (a).end()))
#define maxe(a)    (*max_element((a).begin(), (a).end()))
#define mini(a)    ( min_element((a).begin(), (a).end()) - (a).begin())
#define maxi(a)    ( max_element((a).begin(), (a).end()) - (a).begin())
#define lowb(a, x) ( lower_bound((a).begin(), (a).end(), (x)) - (a).begin())
#define uppb(a, x) ( upper_bound((a).begin(), (a).end(), (x)) - (a).begin())

template<typename T>             vector<T>& operator--            (vector<T> &v){for (auto& i : v) --i;            return  v;}
template<typename T>             vector<T>& operator++            (vector<T> &v){for (auto& i : v) ++i;            return  v;}
template<typename T>             istream& operator>>(istream& is,  vector<T> &v){for (auto& i : v) is >> i;        return is;}
template<typename T>             ostream& operator<<(ostream& os,  vector<T>  v){for (auto& i : v) os << i << ' '; return os;}
template<typename T, typename U> pair<T,U>& operator--           (pair<T, U> &p){--p.first; --p.second;            return  p;}
template<typename T, typename U> pair<T,U>& operator++           (pair<T, U> &p){++p.first; ++p.second;            return  p;}
template<typename T, typename U> istream& operator>>(istream& is, pair<T, U> &p){is >> p.first >> p.second;        return is;}
template<typename T, typename U> ostream& operator<<(ostream& os, pair<T, U>  p){os << p.first << ' ' << p.second; return os;}
template<typename T, typename U> pair<T,U> operator-(pair<T,U> a, pair<T,U> b){return mp(a.first-b.first, a.second-b.second);}
template<typename T, typename U> pair<T,U> operator+(pair<T,U> a, pair<T,U> b){return mp(a.first+b.first, a.second+b.second);}
template<typename T, typename U> void umin(T& a, U b){if (a > b) a = b;}
template<typename T, typename U> void umax(T& a, U b){if (a < b) a = b;}

#ifdef HOME
#define SHOW_COLORS
#include "/mnt/c/Libs/tools/print.cpp"
#else
#define show(...) void(0)
#define debugf(fun)   fun
#define debugv(var)   var
#define mclock    void(0)
#define shows     void(0)
#define debug  if (false)
#define OSTREAM(...)    ;
#define OSTREAM0(...)   ;
#endif

const int D = 100;
const int B = 450;

using Hash = uint64_t;

const uint64_t P = 5792438681590757847ull;
const uint64_t PINV = 640429216751946215ull;
static_assert(P * PINV == 1);

template<typename T, typename F = std::function<T(const T&, const T&)>>
struct SparseTable {
    vector<vector<T>> table;
    vector<int> p2;
    F combine;

    SparseTable(int n, F combine) : combine(combine) {
        while ((1 << table.size()) <= n || table.empty())
            table.emplace_back(n);
    }
    template<typename U>
    SparseTable(const vector<U>& v, F combine) : SparseTable<T>(v.size(), combine) {
        table[0].assign(v.begin(), v.end());
        build();
    }

    void build() {
        p2.resize(table[0].size() + 1);
        for (int i = 2; i < p2.size(); ++i)
            p2[i] = p2[i / 2] + 1;
        for (int i = 1; i < table.size(); ++i) {
            for (int j = 0; j + (1 << i) <= table[i].size(); ++j) {
                table[i][j] = combine(table[i - 1][j], table[i - 1][j + (1 << (i - 1))]);
            }
        }
    }

    T ask(int l, int r) {
        int ln = p2[r - l + 1];
        if (r - l + 1 == ln) return table[ln][l];
        return combine(table[ln][l], table[ln][r - (1 << ln) + 1]);
    }
};

template<typename T>
struct fenwick {
    vector<T> tree;
    int n;
    int K;

    fenwick(int n = 0) : n(n) {
        tree.assign(n, 0);
        K = 0;
        while ((1 << K) <= n)
            ++K;
    }

    void add(int i, T k) {
        for (; i < n; i = (i | (i + 1)))
            tree[i] += k;
    }

    T ask(int r) {
        T res = 0;
        for (; r >= 0; r = (r & (r + 1)) - 1)
            res += tree[r];
        return res;
    }

    T ask(int l, int r) {
        if (l > r) return 0;
        return ask(r) - ask(l - 1);
    }

    // find first i such that sum[0..i] >= x
    int lower_bound(T x) {
        int cur = 0;
        T cur_sum = 0;
        for (int k = K - 1; k >= 0; --k) {
            int ind = cur | ((1 << k) - 1);
            if (ind >= n) continue;
            if (cur_sum + tree[ind] >= x) continue;
            cur_sum += tree[ind];
            cur |= (1 << k);
        }
        return cur;
    }
};

int main() {
    ios_base::sync_with_stdio(false); cin.tie(NULL);

    int n, m, q;
    cin >> n >> m >> q;
    vector<int> a(n);
    cin >> a;
    vector<int> b(m);
    cin >> b;
    SparseTable<int> sparse(b, [](int a, int b) { return gcd(a, b); });
    vector<Hash> pows(n + 5);
    vector<Hash> invpows(n + 5);
    invpows[0] = 1;
    for (int i = 1; i < invpows.size(); ++i)
        invpows[i] = invpows[i - 1] * PINV;
    pows[0] = 1;
    for (int i = 1; i < pows.size(); ++i) {
        pows[i] = pows[i - 1] * P;
    }
    vector<Hash> prefpows = pows;
    for (int i = 1; i < prefpows.size(); ++i)
        prefpows[i] += prefpows[i - 1];
    vector<array<Hash, B>> v(n / B + 1);
    for (auto& u : v)
        u.fill(0);
    for (int i = 0; i < n; ++i) {
        v[i / B][i % B] = pows[i] * a[i];
    }
    for (auto& u : v)
        for (int i = 1; i < B; ++i)
            u[i] += u[i - 1];
    vector<Hash> block_delta(n / B + 1, 0);

    fenwick<ll> justsum(n);
    for (int i = 0; i < n; ++i) {
        justsum.add(i, a[i]);
    }

    vector<fenwick<ll>> trees;
    trees.pb(0);
    for (int d = 1; d <= D; ++d) {
        trees.pb(n + d + 5);
        for (int i = 0; i < n; ++i) {
            trees.back().add((i % d) * (n / d + 1) + i / d, a[i]);
        }
    }

    while (q--) {
        char c;
        cin >> c;
        if (c == 'U') {
            int ind;
            int val;
            cin >> ind >> val;
            --ind;
            int vdelta = val - a[ind];
            a[ind] = val;
            justsum.add(ind, vdelta);
            Hash delta = pows[ind] * vdelta;
            for (int j = ind % B; j < B; ++j)
                v[ind / B][j] += delta;
            for (int i = ind / B + 1; i < block_delta.size(); ++i)
                block_delta[i] += delta;
            for (int d = 1; d <= D; ++d)
                trees[d].add((ind % d) * (n / d + 1) + ind / d, vdelta);
        } else {
            auto pointval = [&](int i) {
                return v[i / B][i % B] + block_delta[i / B];
            };
            auto segsum = [&](int l, int r) {
                Hash res = pointval(r);
                if (l) res -= pointval(l - 1);
                return res;
            };

            int l, r, s, t;
            cin >> l >> r >> s >> t;
            --l; --r; --s; --t;
            int d = sparse.ask(s, t);
            d = gcd(d, r - l + 1);
            ll sm = justsum.ask(l, r);
            show(l, r, d, sm);
            if (sm % d != 0) {
                cout << "No\n";
                continue;
            }
            sm /= d;
            if (d <= D) {
                ll last = -1;
                bool ok = true;
                for (int rem = 0; rem < d; ++rem) {
                    int li = l + rem;
                    int ri = r + 1 + rem - d;
                    li = (li % d) * (n / d + 1) + li / d;
                    ri = (ri % d) * (n / d + 1) + ri / d;
                    ll cur = trees[d].ask(li, ri);
                    if (rem && last != cur) {
                        ok = false;
                        break;
                    }
                    last = cur;
                }
                cout << (ok ? "Yes" : "No") << '\n';
            } else {
                Hash cur = 0;
                for (int i = l; i <= r; i += d) {
                    cur += segsum(i, i+d-1) * invpows[i];
                }
                Hash need = prefpows[d - 1] * sm;
                show(cur);
                show(need);
                cout << (cur == need ? "Yes" : "No") << '\n';
            }
        }
    }

    return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3916kb

input:

6 4 5
1 1 4 5 1 4
3 3 2 4
Q 1 5 1 2
Q 2 5 3 4
U 5 2
Q 1 6 1 2
Q 2 5 3 4

output:

Yes
No
No
Yes

result:

ok 4 tokens

Test #2:

score: 0
Accepted
time: 0ms
memory: 3712kb

input:

1 1 1
0
1
Q 1 1 1 1

output:

Yes

result:

ok "Yes"

Test #3:

score: 0
Accepted
time: 222ms
memory: 4924kb

input:

2000 2000 200000
1 1 2 0 0 2 0 2 0 0 0 0 0 2 2 1 2 0 0 2 2 2 1 0 1 2 1 2 0 0 1 1 1 2 0 0 2 2 2 2 0 2 0 0 2 1 2 0 0 1 2 2 1 0 2 0 0 0 1 2 2 1 2 2 0 0 1 1 1 0 0 2 0 0 1 1 0 2 2 2 1 0 0 1 0 1 2 2 2 1 1 2 2 1 2 1 0 2 2 3 1 3 2 3 1 0 1 2 0 1 1 1 0 2 2 3 2 0 3 2 3 3 1 2 3 1 2 0 1 0 3 1 0 0 2 0 1 2 1 3 2 2...

output:

Yes
Yes
No
Yes
Yes
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
No
Yes
Yes
No
No
No
No
No
Yes
No
No
No
Yes
Yes
No
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
No
Yes
Yes
Yes
No
No
Yes
No
Yes
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
No...

result:

ok 100554 tokens

Test #4:

score: 0
Accepted
time: 114ms
memory: 19072kb

input:

1 200000 200000
998244353
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...

output:

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
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
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
...

result:

ok 100240 tokens

Test #5:

score: 0
Accepted
time: 94ms
memory: 13712kb

input:

6 131072 200000
0 0 0 0 1000000000 1000000000
4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ...

output:

Yes
Yes
Yes
No
No
No
Yes
No
No
No
No
No
Yes
Yes
No
Yes
No
Yes
Yes
Yes
No
No
No
No
No
No
No
Yes
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
Yes
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
Yes
Yes
No
Yes
N...

result:

ok 100021 tokens

Test #6:

score: -100
Wrong Answer
time: 578ms
memory: 184052kb

input:

200000 200000 200000
490339877 490339877 490339877 490339877 490339877 490339877 490339877 490339877 490339877 490339877 490339877 490339877 490339877 490339877 490339877 490339877 490339877 490339877 490339877 490339877 490339877 490339877 490339877 490339877 490339877 490339877 490339877 490339877...

output:

No
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
Yes
Yes
Yes
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes
No
Yes
Yes
No
No
No
No
No
No
No
No
N...

result:

wrong answer 682nd words differ - expected: 'Yes', found: 'No'