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
#409794#8338. Quad Kingdoms ChessbigJWA 41ms4156kbC++234.9kb2024-05-12 18:41:092024-05-12 18:41:09

Judging History

你现在查看的是最新测评结果

  • [2024-05-12 18:41:09]
  • 评测
  • 测评结果:WA
  • 用时:41ms
  • 内存:4156kb
  • [2024-05-12 18:41:09]
  • 提交

answer

#include <bits/stdc++.h>

constexpr bool isprime(int n) {
    if (n <= 1) {
        return false;
    }
    for (int i = 2; i * i <= n; i++) {
        if (n % i == 0) {
            return false;
        }
    }
    return true;
}

constexpr int findPrime(int n) {
    while (!isprime(n)) {
        n++;
    }
    return n;
}

std::mt19937 rnd(std::chrono::high_resolution_clock::now().time_since_epoch().count());
const int P = findPrime(rnd() % 900000000 + 100000000);
const int B = rnd() % P;

constexpr int N = 100000;
int p[N + 1];

template <class Info>
struct SegmentTree {
#define m (l + r) / 2
    int n;
    std::vector<Info> tr;
    SegmentTree() : n(0) {}
    SegmentTree(int n_, Info v_ = Info()) {
        init(n_, v_);
    }
    template<class T>
    SegmentTree(std::vector<T> init_) {
        init(init_);
    }
    void init(int n_, Info v_ = Info()) {
        init(std::vector(n_, v_));
    }
    template<class T>
    void init(std::vector<T> init_) {
        n = init_.size();
        tr.assign(4 << std::__lg(n), Info());
        std::function<void(int, int, int)> build = [&](int p, int l, int r) {
            if (r - l == 1) {
                tr[p] = init_[l];
                tr[p].l = l;
                tr[p].r = r;
                return;
            }
            build(2 * p, l, m);
            build(2 * p + 1, m, r);
            pull(p);
        };
        build(1, 0, n);
    }

    void pull(int p) {
        tr[p] = merge(tr[2 * p], tr[2 * p + 1], *this);
    }

    void modify(int p, int l, int r, int x, const Info& v) {
        if (r - l == 1) {
            tr[p] = v;
            tr[p].l = l;
            tr[p].r = r;
            return;
        }
        if (x < m) {
            modify(2 * p, l, m, x, v);
        } else {
            modify(2 * p + 1, m, r, x, v);
        }
        pull(p);
    }
    void modify(int x, const Info& v) {
        modify(1, 0, n, x, v);
    }

    Info rangeQuery(int p, int l, int r, int x, int y) {
        if (l >= y || r <= x) {
            return Info();
        }
        if (l >= x && r <= y) {
            return tr[p];
        }
        return merge(rangeQuery(2 * p, l, m, x, y), rangeQuery(2 * p + 1, m, r, x, y), *this);
    }

    Info rangeQuery(int l, int r) {
        return rangeQuery(1, 0, n, l, r);
    }
    int findFirst(int p, int l, int r, int x, int y, auto check) {
        if (l >= y || r <= x || !check(tr[p])) {
            return -1;
        }
        if (r - l == 1) {
            return l;
        }
        int res = findFirst(2 * p, l, m, x, y, check);
        if (res == -1) {
            res = findFirst(2 * p + 1, m, r, x, y, check);
        }
        return res;
    }
    int findFirst(int x, int y, auto check) {
        return findFirst(1, 0, n, x, y, check);
    }

    int findLast(int p, int l, int r, int x, int y, auto check) {
        if (l >= y || r <= x || !check(tr[p])) {
            return -1;
        }
        if (r - l == 1) {
            return l;
        }
        int res = findLast(2 * p + 1, m, r, x, y, check);
        if (res == -1) {
            res = findLast(2 * p, l, m, x, y, check);
        }
        return res;
    }
    int findLast(int x, int y, auto check) {
        return findLast(1, 0, n, x, y, check);
    }
#undef m
};

struct Info {
    int l;
    int r;
    int max;
    int premin;
    int hash;
    int siz;
    Info() : l(-1), r(-1), max(0), premin(N + 1), hash(0), siz(1) {}
    Info(int v) : l(0), r(0), max(v), premin(v), hash(1LL * v * B % P), siz(1) {}
};

Info merge(const Info& a, const Info& b, SegmentTree<Info>& seg) {
    if (a.l == -1) {
        return b;
    } else if (b.l == -1) {
        return a;
    }
    Info c = a;
    c.r = b.r;
    if (c.max > b.max) {
        return c;
    }
    Info d = b;
    if (d.premin < c.max) {
        int pos = seg.findFirst(b.l, b.r, [&](const Info& t) {
            return t.max >= c.max;
        });
        d = seg.rangeQuery(pos, b.r);
    }
    c.max = d.max;
    c.siz += d.siz;
    c.hash = (c.hash + d.hash * p[a.siz] % P) % P;
    return c;
}

int main() {
    p[0] = 1;
    for (int i = 1; i <= N; i++) {
        p[i] = (1LL * p[i - 1] * B) % P;
    }

    int n1, n2, m;

    scanf("%d", &n1);
    std::vector<int> a(n1);
    for (int i = 0; i < n1; i++) {
        scanf("%d", &a[i]);
    }

    scanf("%d", &n2);
    std::vector<int> b(n2);
    for (int i = 0; i < n2; i++) {
        scanf("%d", &b[i]);
    }

    std::ranges::reverse(a);
    std::ranges::reverse(b);

    SegmentTree<Info> sega(a);
    SegmentTree<Info> segb(b);

    for (scanf("%d", &m); m; m--) {
        int o, x, y;
        scanf("%d%d%d", &o, &x, &y);
        if (o == 1) {
            sega.modify(n1 - x, y);
        } else {
            segb.modify(n2 - x, y);
        }
        puts(sega.tr[1].hash == segb.tr[1].hash ? "YES" : "NO");
    }

    return 0;
}

詳細信息

Test #1:

score: 100
Accepted
time: 1ms
memory: 4156kb

input:

5
1 2 3 4 5
5
5 4 3 2 1
8
1 1 5
1 4 2
1 2 4
1 5 1
1 5 5
2 1 4
2 3 5
2 5 5

output:

NO
NO
NO
YES
NO
NO
NO
YES

result:

ok 8 tokens

Test #2:

score: 0
Accepted
time: 33ms
memory: 4092kb

input:

1
2
6
2 1 1 1 1 1
200000
2 6 2
1 1 1
1 1 1
1 1 2
2 1 1
1 1 2
1 1 1
2 4 1
2 1 2
1 1 1
1 1 2
2 5 1
1 1 1
1 1 2
1 1 1
2 6 1
1 1 2
1 1 2
1 1 2
2 3 1
1 1 1
2 1 1
2 6 2
1 1 2
2 4 1
1 1 2
2 6 1
1 1 2
1 1 1
2 5 2
2 6 2
1 1 1
2 4 2
2 5 2
2 6 2
1 1 1
2 5 1
2 6 2
1 1 2
1 1 1
1 1 1
2 4 1
1 1 2
1 1 2
1 1 2
2 3 2...

output:

NO
NO
NO
NO
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
N...

result:

ok 200000 tokens

Test #3:

score: 0
Accepted
time: 33ms
memory: 4108kb

input:

6
2 1 1 2 1 2
1
1
200000
2 1 1
1 1 2
1 1 1
2 1 2
2 1 1
2 1 1
2 1 2
2 1 2
1 1 2
1 3 1
1 6 2
1 5 2
1 4 2
1 3 1
2 1 2
1 4 2
1 4 2
2 1 2
2 1 2
1 3 1
1 6 1
1 1 2
2 1 1
1 6 1
1 3 1
1 5 2
1 6 2
1 5 2
2 1 2
1 2 1
1 5 2
2 1 1
2 1 1
1 6 1
2 1 2
2 1 1
1 3 2
2 1 1
1 6 1
1 4 2
1 2 1
1 1 1
2 1 1
1 2 1
1 6 2
1 6 2...

output:

NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
...

result:

ok 200000 tokens

Test #4:

score: -100
Wrong Answer
time: 41ms
memory: 4088kb

input:

6
1 3 1 2 1 2
6
2 1 3 3 3 1
200000
2 4 2
1 2 1
1 6 2
2 3 2
1 1 1
1 6 2
1 6 2
1 3 2
2 6 1
2 4 3
1 1 2
2 5 2
2 6 2
2 3 1
1 4 3
1 3 1
2 5 2
2 4 2
2 1 3
1 1 1
2 2 2
2 4 2
1 5 3
1 6 3
2 6 3
1 5 3
2 5 3
2 4 1
2 4 2
1 1 2
1 6 1
2 6 1
1 2 3
1 1 3
1 1 1
2 6 3
2 4 1
1 4 2
2 2 1
1 3 1
1 1 3
1 1 3
1 4 3
1 3 3
2...

output:

NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
...

result:

wrong answer 27th words differ - expected: 'YES', found: 'NO'