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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#775776#9786. Magical BagsMofumofu Binary Tree (Shunsuke Fujisawa, Yui Tamura, Kawaue Yamato)#WA 0ms3808kbC++1712.9kb2024-11-23 16:40:062024-11-23 16:40:06

Judging History

This is the latest submission verdict.

  • [2024-11-23 16:40:06]
  • Judged
  • Verdict: WA
  • Time: 0ms
  • Memory: 3808kb
  • [2024-11-23 16:40:06]
  • Submitted

answer

#ifdef NACHIA
#define _GLIBCXX_DEBUG
#else
#define NDEBUG
#endif
#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <iterator>
#include <functional>
#include <utility>
#include <type_traits>

template<class Elem> struct vec;

template<class Iter>
struct seq_view{
    using Ref = typename std::iterator_traits<Iter>::reference;
    using Elem = typename std::iterator_traits<Iter>::value_type;
    Iter a, b;
    Iter begin() const { return a; }
    Iter end() const { return b; }
    int size() const { return (int)(b-a); }
    seq_view(Iter first, Iter last) : a(first), b(last) {}
    seq_view sort() const { std::sort(a, b); return *this; }
    Ref& operator[](int x) const { return *(a+x); }
    template<class F = std::less<Elem>, class ret = vec<int>> ret sorti(F f = F()) const {
        ret x(size()); for(int i=0; i<size(); i++) x[i] = i;
        x().sort([&](int l, int r){ return f(a[l],a[r]); });
        return x;
    }
    template<class ret = vec<Elem>> ret col() const { return ret(begin(), end()); }
    template<class ret = vec<Elem>> ret cumsum() const {
        auto res = ret(size() + 1, Elem(0));
        for(int i=0; i<size(); i++) res[i+1] = res[i] + operator[](i);
        return res;
    }
    template<class F = std::equal_to<Elem>, class ret = vec<std::pair<Elem, int>>>
    ret rle(F eq = F()) const {
        auto x = ret();
        for(auto& a : (*this)){
            if(x.size() == 0 || !eq(x[x.size()-1].first, a)) x.emp(a, 1); else x[x.size()-1].second++;
        } return x;
    }
    template<class F> seq_view sort(F f) const { std::sort(a, b, f); return *this; }
    Iter uni() const { return std::unique(a, b); }
    Iter lb(const Elem& x) const { return std::lower_bound(a, b, x); }
    Iter ub(const Elem& x) const { return std::upper_bound(a, b, x); }
    int lbi(const Elem& x) const { return lb(x) - a; }
    int ubi(const Elem& x) const { return ub(x) - a; }
    seq_view bound(const Elem& l, const Elem& r) const { return { lb(l), lb(r) }; }
    template<class F> Iter lb(const Elem& x, F f) const { return std::lower_bound(a, b, x, f); }
    template<class F> Iter ub(const Elem& x, F f) const { return std::upper_bound(a, b, x, f); }
    template<class F> Iter when_true_to_false(F f) const {
        if(a == b) return a;
        return std::lower_bound(a, b, *a,
            [&](const Elem& x, const Elem&){ return f(x); });
    }
    seq_view same(Elem x) const { return { lb(x), ub(x) }; }
    template<class F> auto map(F f) const {
        vec<decltype(f(std::declval<const typename Iter::value_type&>()))> r;
        for(auto& x : *this) r.emp(f(x));
        return r;
    }
    Iter max() const { return std::max_element(a, b); }
    Iter min() const { return std::min_element(a, b); }
    template<class F = std::less<Elem>>
    Iter min(F f) const { return std::min_element(a, b, f); }
    seq_view rev() const { std::reverse(a, b); return *this; }
};

template<class Elem>
struct vec {
public:
    using Base = typename std::vector<Elem>;
    using Iter = typename Base::iterator;
    using CIter = typename Base::const_iterator;
    using View = seq_view<Iter>;
    using CView = seq_view<CIter>;

    vec(){}
    explicit vec(int n, const Elem& value = Elem()) : a(0<n?n:0, value) {}
    template <class I2> vec(I2 first, I2 last) : a(first, last) {}
    vec(std::initializer_list<Elem> il) : a(std::move(il)) {}
    vec(Base b) : a(std::move(b)) {}
    operator Base() const { return a; }

    Iter begin(){ return a.begin(); }
    CIter begin() const { return a.begin(); }
    Iter end(){ return a.end(); }
    CIter end() const { return a.end(); }
    int size() const { return a.size(); }
    bool empty() const { return a.empty(); }
    Elem& back(){ return a.back(); }
    const Elem& back() const { return a.back(); }
    vec& sortuni(){ (*this)().sort(); a.erase((*this)().uni(), end()); return *this; }
    vec sortunied(){ vec x = *this; x.sortuni(); return x; }
    Iter operator()(int x){ return a.begin() + x; }
    CIter operator()(int x) const { return a.begin() + x; }
    View operator()(int l, int r){ return { (*this)(l), (*this)(r) }; }
    CView operator()(int l, int r) const { return { (*this)(l), (*this)(r) }; }
    View operator()(){ return (*this)(0,size()); }
    CView operator()() const { return (*this)(0,size()); }
    Elem& operator[](int x){ return a[x]; }
    const Elem& operator[](int x) const { return a[x]; }
    Base& operator*(){ return a; }
    const Base& operator*() const { return a; }
    vec& push(Elem args){
        a.push_back(std::move(args));
        return *this;
    }
    template<class... Args>
    vec& emp(Args &&... args){
        a.emplace_back(std::forward<Args>(args) ...);
        return *this;
    }
    template<class Range>
    vec& app(Range& x){ for(auto& v : x){ emp(v); } return *this; }
    Elem pop(){ Elem x = std::move(a.back()); a.pop_back(); return x; }
    void resize(int sz){ a.resize(sz); }
    void reserve(int sz){ a.reserve(sz); }
    bool operator==(const vec& r) const { return a == r.a; }
    bool operator!=(const vec& r) const { return a != r.a; }
    bool operator<(const vec& r) const { return a < r.a; }
    bool operator<=(const vec& r) const { return a <= r.a; }
    bool operator>(const vec& r) const { return a > r.a; }
    bool operator>=(const vec& r) const { return a >= r.a; }
    vec<vec<Elem>> pile(int n) const { return vec<vec<Elem>>(n, *this); }
    template<class F> vec& filter(F f){
        int p = 0;
        for(auto& x : a) if(f(x)) std::swap(a[p++],x);
        resize(p); return *this;
    }
    vec& operator+=(const vec& r){ return app(r); }
    vec operator+(const vec& r) const { vec x = *this; x += r; return x; }
    vec operator*(int t) const { vec res; while(t--){ res += *this; } return res; }
private: Base a;
};

template<class IStr, class U, class T>
IStr& operator>>(IStr& is, vec<std::pair<U,T>>& v){ for(auto& x:v){ is >> x.first >> x.second; } return is; }
template<class IStr, class T>
IStr& operator>>(IStr& is, vec<T>& v){ for(auto& x:v){ is >> x; } return is; }
template<class OStr, class T>
OStr& operator<<(OStr& os, const vec<T>& v){
    for(int i=0; i<v.size(); i++){
        if(i){ os << ' '; } os << v[i];
    } return os;
}
template<class OStr, class U, class T>
OStr& operator<<(OStr& os, const vec<std::pair<U,T>>& v){
    for(int i=0; i<v.size(); i++){
        if(i){ os << ' '; } os << '(' << v[i].first << ',' << v[i].second << ')';
    } return os;
}
#include <cassert>

namespace nachia{

// ax + by = gcd(a,b)
// return ( x, - )
std::pair<long long, long long> ExtGcd(long long a, long long b){
    long long x = 1, y = 0;
    while(b){
        long long u = a / b;
        std::swap(a-=b*u, b);
        std::swap(x-=y*u, y);
    }
    return std::make_pair(x, a);
}

} // namespace nachia

namespace nachia{

class DynamicModSupplier{
    using u64 = unsigned long long;
    using Int = unsigned int;
private:
    u64 imod;
    Int mod;
    // atcoder library
    u64 reduce2(u64 z) const noexcept {
        // atcoder library
#ifdef _MSC_VER
        u64 x; _umul128(z, im, &x);
#else
        using u128 = unsigned __int128;
        u64 x = (u64)(((u128)(z)*imod) >> 64);
#endif
        return z - x * mod;
    }
public:
    DynamicModSupplier(unsigned int MOD = 998244353) : mod(MOD) {
        assert(2 <= MOD);
        assert(MOD < (1u << 31));
        imod = (u64)(-1) / mod + 1;
    }
    Int reduce(u64 z) const noexcept {
        Int v = reduce2(z);
        if(mod <= v) v += mod;
        return v;
    }
    Int add(Int a, Int b) const { a += b; if(a >= mod){ a -= mod; } return a; }
    Int sub(Int a, Int b) const { a -= b; if(a >= mod){ a += mod; } return a; }
    Int mul(Int a, Int b) const { return reduce((u64)a * b); }
    Int muladd(Int a, Int b, Int c) const { return reduce((u64)a * b + c); }
    Int inv(Int a) const {
        Int v = ExtGcd(a, mod).first;
        return (v < mod) ? v : (v + mod);
    }
    Int pow(Int a, u64 i) const {
        Int r = a, ans = 1;
        while(i){
            if(i & 1) ans = mul(ans, r);
            i /= 2;
            r = mul(r, r);
        }
        return ans;
    }
    Int getMod() const { return mod; }
};

} // namespace nachia

namespace nachia{

template<unsigned int IDENTIFER, class IDENTIFER2 = void>
class DynamicModint{
    using Int = unsigned int;
    using MyType = DynamicModint;
private:
    static DynamicModSupplier _c;
    Int v;
    template< class Elem >
    static Elem SafeMod(Elem x, Int mod){
        if(x < 0){
            if(0 <= x+mod) return x + mod;
            return mod - ((-(x+mod)-1) % mod + 1);
        }
        return x % mod;
    }
public:
    DynamicModint() : v(0) {}
    DynamicModint(const MyType& r) : v(r.v) {}
    MyType& operator=(const MyType&) = default;
    DynamicModint(long long x){ v = SafeMod(x, _c.getMod()); }
    static MyType raw(Int _v){ MyType res; res.v = _v; return res; }
    static void setMod(DynamicModSupplier sup){ _c = std::move(sup); }
    MyType operator+=(MyType r){ return v = _c.add(v, r.v); }
    MyType operator+(MyType r) const { return raw(_c.add(v, r.v)); }
    MyType operator-=(MyType r){ return v = _c.sub(v, r.v); }
    MyType operator-(MyType r) const { return raw(_c.sub(v, r.v)); }
    MyType operator-() const { return raw(v ? _c.getMod()-v : 0); }
    MyType operator*=(MyType r){ return v = _c.mul(v, r.v); }
    MyType operator*(MyType r) const { return raw(_c.mul(v, r.v)); }
    MyType operator/=(MyType r){ return v = _c.mul(v, _c.inv(r.v)); }
    MyType operator/(MyType r) const { return raw(_c.mul(v, _c.inv(r.v))); }
    MyType inv() const { return raw(_c.inv(v)); }
    MyType pow(unsigned long long r) const { return raw(_c.pow(v, r)); }
    MyType mulAdd(MyType mul, MyType add) const { return raw(_c.muladd(v, mul.v, add.v)); }
    Int val() const { return v; }
    Int operator*() const { return v; }
    static Int mod(){ return _c.getMod(); }
};

template<unsigned int IDENTIFER, class IDENTIFER2>
DynamicModSupplier DynamicModint<IDENTIFER, IDENTIFER2>::_c;

} // namespace nachia
using i64 = long long;
using u64 = unsigned long long;
#define rep(i,n) for(int i=0; i<int(n); i++)
const i64 INF = 1001001001001001001;
template<typename A> void chmin(A& l, const A& r){ if(r < l) l = r; }
template<typename A> void chmax(A& l, const A& r){ if(l < r) l = r; }
using namespace std;
using Modint = nachia::DynamicModint<998244353>;

namespace nachia{

template<class Modint>
class Comb{
private:
    std::vector<Modint> F;
    std::vector<Modint> iF;
public:
    void extend(int newN){
        int prevN = (int)F.size() - 1;
        if(prevN >= newN) return;
        F.resize(newN+1);
        iF.resize(newN+1);
        for(int i=prevN+1; i<=newN; i++) F[i] = F[i-1] * Modint::raw(i);
        iF[newN] = F[newN].inv();
        for(int i=newN; i>prevN; i--) iF[i-1] = iF[i] * Modint::raw(i);
    }
    Comb(int n = 1){
        F.assign(2, Modint(1));
        iF.assign(2, Modint(1));
        extend(n);
    }
    Modint factorial(int n) const { return F[n]; }
    Modint invFactorial(int n) const { return iF[n]; }
    Modint invOf(int n) const { return iF[n] * F[n-1]; }
    Modint comb(int n, int r) const {
        if(n < 0 || n < r || r < 0) return Modint(0);
        return F[n] * iF[r] * iF[n-r];
    }
    Modint invComb(int n, int r) const {
        if(n < 0 || n < r || r < 0) return Modint(0);
        return iF[n] * F[r] * F[n-r];
    }
    Modint perm(int n, int r) const {
        if(n < 0 || n < r || r < 0) return Modint(0);
        return F[n] * iF[n-r];
    }
    Modint invPerm(int n, int r) const {
        if(n < 0 || n < r || r < 0) return Modint(0);
        return iF[n] * F[n-r];
    }
    Modint operator()(int n, int r) const { return comb(n,r); }
};

} // namespace nachia

void testcase(){
    int N; cin >> N;
    vec<int> L(N), R(N);
    vec<vec<int>> Q(N);
    rep(i,N){
        int K; cin >> K;
        Q[i].resize(K);
        cin >> Q[i];
        Q[i]().sort();
        L[i] = Q[i][0];
        R[i] = Q[i].back();
    }
    vec<int> Ls = L, Rs = R;
    Ls().sort(); Rs().sort();
    vec<int> degable(N);
    rep(i,N){
        for(int k : Q[i]){
            int ok = 1;
            if(Rs().bound(L[i],k).size() != 0) ok = 0;
            if(Ls().bound(k+1,R[i]).size() != 0) ok = 0;
            if(ok) degable[i] = 1;
        }
    }
    vec<pair<int,int>> usable;
    rep(i,N) if(Q[i].size() != 1) usable.push({ R[i], L[i] });
    usable().sort();
    int ans = 0;
    int t = -1;
    for(auto [r,l] : usable){
        if(t < l){
            t = r;
            ans += 1;
        }
    }
    int fans = 0;
    rep(i,N) fans += min(2,Q[i].size());
    fans -= ans;
    cout << fans << endl;
}


int main(){
    ios::sync_with_stdio(false); cin.tie(nullptr);
    testcase();
    return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3584kb

input:

4
3 4 7 10
2 1 9
4 11 2 8 14
3 6 12 13

output:

7

result:

ok 1 number(s): "7"

Test #2:

score: 0
Accepted
time: 0ms
memory: 3580kb

input:

4
1 1
1 2
1 3
1 4

output:

4

result:

ok 1 number(s): "4"

Test #3:

score: 0
Accepted
time: 0ms
memory: 3544kb

input:

4
3 4 7 10
2 1 9
4 11 2 8 14
3 6 12 13

output:

7

result:

ok 1 number(s): "7"

Test #4:

score: 0
Accepted
time: 0ms
memory: 3808kb

input:

4
1 1
1 2
1 3
1 4

output:

4

result:

ok 1 number(s): "4"

Test #5:

score: -100
Wrong Answer
time: 0ms
memory: 3552kb

input:

100
4 372861091 407948190 424244630 359746969
6 568180757 527358812 494745349 665803213 674832670 586694351
4 696340797 775899164 919971335 716827187
4 123145962 344250363 122030550 251739234
4 342654413 368648894 150539766 255189030
1 194505887
3 755984448 736803561 745474041
4 709314938 498953418 ...

output:

171

result:

wrong answer 1st numbers differ - expected: '177', found: '171'