結果

問題 No.1334 Multiply or Add
ユーザー rniyarniya
提出日時 2021-01-09 00:16:58
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 29 ms / 2,000 ms
コード長 7,390 bytes
コンパイル時間 3,641 ms
コンパイル使用メモリ 209,544 KB
実行使用メモリ 5,248 KB
最終ジャッジ日時 2024-11-16 19:38:08
合計ジャッジ時間 5,133 ms
ジャッジサーバーID
（参考情報） 		judge3 / judge4
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 1 ms
5,248 KB
testcase_01 AC 2 ms
5,248 KB
testcase_02 AC 2 ms
5,248 KB
testcase_03 AC 15 ms
5,248 KB
testcase_04 AC 14 ms
5,248 KB
testcase_05 AC 14 ms
5,248 KB
testcase_06 AC 14 ms
5,248 KB
testcase_07 AC 15 ms
5,248 KB
testcase_08 AC 14 ms
5,248 KB
testcase_09 AC 14 ms
5,248 KB
testcase_10 AC 15 ms
5,248 KB
testcase_11 AC 14 ms
5,248 KB
testcase_12 AC 14 ms
5,248 KB
testcase_13 AC 15 ms
5,248 KB
testcase_14 AC 14 ms
5,248 KB
testcase_15 AC 15 ms
5,248 KB
testcase_16 AC 15 ms
5,248 KB
testcase_17 AC 16 ms
5,248 KB
testcase_18 AC 15 ms
5,248 KB
testcase_19 AC 22 ms
5,248 KB
testcase_20 AC 24 ms
5,248 KB
testcase_21 AC 23 ms
5,248 KB
testcase_22 AC 13 ms
5,248 KB
testcase_23 AC 14 ms
5,248 KB
testcase_24 AC 14 ms
5,248 KB
testcase_25 AC 14 ms
5,248 KB
testcase_26 AC 15 ms
5,248 KB
testcase_27 AC 14 ms
5,248 KB
testcase_28 AC 14 ms
5,248 KB
testcase_29 AC 15 ms
5,248 KB
testcase_30 AC 15 ms
5,248 KB
testcase_31 AC 15 ms
5,248 KB
testcase_32 AC 14 ms
5,248 KB
testcase_33 AC 15 ms
5,248 KB
testcase_34 AC 14 ms
5,248 KB
testcase_35 AC 14 ms
5,248 KB
testcase_36 AC 15 ms
5,248 KB
testcase_37 AC 15 ms
5,248 KB
testcase_38 AC 15 ms
5,248 KB
testcase_39 AC 2 ms
5,248 KB
testcase_40 AC 7 ms
5,248 KB
testcase_41 AC 3 ms
5,248 KB
testcase_42 AC 4 ms
5,248 KB
testcase_43 AC 10 ms
5,248 KB
testcase_44 AC 7 ms
5,248 KB
testcase_45 AC 4 ms
5,248 KB
testcase_46 AC 7 ms
5,248 KB
testcase_47 AC 10 ms
5,248 KB
testcase_48 AC 8 ms
5,248 KB
testcase_49 AC 13 ms
5,248 KB
testcase_50 AC 27 ms
5,248 KB
testcase_51 AC 28 ms
5,248 KB
testcase_52 AC 28 ms
5,248 KB
testcase_53 AC 28 ms
5,248 KB
testcase_54 AC 28 ms
5,248 KB
testcase_55 AC 29 ms
5,248 KB
testcase_56 AC 2 ms
5,248 KB
testcase_57 AC 2 ms
5,248 KB
testcase_58 AC 2 ms
5,248 KB
testcase_59 AC 2 ms
5,248 KB
testcase_60 AC 2 ms
5,248 KB
testcase_61 AC 2 ms
5,248 KB
testcase_62 AC 2 ms
5,248 KB
testcase_63 AC 2 ms
5,248 KB
testcase_64 AC 2 ms
5,248 KB
testcase_65 AC 2 ms
5,248 KB
testcase_66 AC 23 ms
5,248 KB
testcase_67 AC 16 ms
5,248 KB
testcase_68 AC 2 ms
5,248 KB
testcase_69 AC 27 ms
5,248 KB
testcase_70 AC 25 ms
5,248 KB
権限があれば一括ダウンロードができます

ソースコード

diff # 

#include <bits/stdc++.h>
using namespace std;
const long long MOD=1000000007;
// const long long MOD=998244353;
#define LOCAL
#pragma region Macros
typedef long long ll;
typedef __int128_t i128;
typedef unsigned int uint;
typedef unsigned long long ull;
#define ALL(x) (x).begin(),(x).end()
const int INF=1e9;
const long long IINF=1e18;
const int dx[4]={1,0,-1,0},dy[4]={0,1,0,-1};
const char dir[4]={'D','R','U','L'};

template<typename T>
istream &operator>>(istream &is,vector<T> &v){
    for (T &x:v) is >> x;
    return is;
}
template<typename T>
ostream &operator<<(ostream &os,const vector<T> &v){
    for (int i=0;i<v.size();++i){
        os << v[i] << (i+1==v.size()?"": " ");
    }
    return os;
}
template<typename T,typename U>
ostream &operator<<(ostream &os,const pair<T,U> &p){
    os << '(' << p.first << ',' << p.second << ')';
    return os;
}
template<typename T,typename U,typename V>
ostream&operator<<(ostream &os,const tuple<T,U,V> &t){
    os << '(' << get<0>(t) << ',' << get<1>(t) << ',' << get<2>(t) << ')';
    return os;
}
template<typename T,typename U,typename V,typename W>
ostream&operator<<(ostream &os,const tuple<T,U,V,W> &t){
    os << '(' << get<0>(t) << ',' << get<1>(t) << ',' << get<2>(t) << ',' << get<3>(t) << ')';
    return os;
}
template<typename T,typename U>
ostream &operator<<(ostream &os,const map<T,U> &m){
    os << '{';
    for (auto itr=m.begin();itr!=m.end();){
        os << '(' << itr->first << ',' << itr->second << ')';
        if (++itr!=m.end()) os << ',';
    }
    os << '}';
    return os;
}
template<typename T,typename U>
ostream &operator<<(ostream &os,const unordered_map<T,U> &m){
    os << '{';
    for (auto itr=m.begin();itr!=m.end();){
        os << '(' << itr->first << ',' << itr->second << ')';
        if (++itr!=m.end()) os << ',';
    }
    os << '}';
    return os;
}
template<typename T>
ostream &operator<<(ostream &os,const set<T> &s){
    os << '{';
    for (auto itr=s.begin();itr!=s.end();){
        os << *itr;
        if (++itr!=s.end()) os << ',';
    }
    os << '}';
    return os;
}
template<typename T>
ostream &operator<<(ostream &os,const multiset<T> &s){
    os << '{';
    for (auto itr=s.begin();itr!=s.end();){
        os << *itr;
        if (++itr!=s.end()) os << ',';
    }
    os << '}';
    return os;
}
template<typename T>
ostream &operator<<(ostream &os,const unordered_set<T> &s){
    os << '{';
    for (auto itr=s.begin();itr!=s.end();){
        os << *itr;
        if (++itr!=s.end()) os << ',';
    }
    os << '}';
    return os;
}
template<typename T>
ostream &operator<<(ostream &os,const deque<T> &v){
    for (int i=0;i<v.size();++i){
        os << v[i] << (i+1==v.size()?"": " ");
    }
    return os;
}

void debug_out(){cerr << '\n';}
template<class Head,class... Tail>
void debug_out(Head&& head,Tail&&... tail){
    cerr << head;
    if (sizeof...(Tail)>0) cerr << ", ";
    debug_out(move(tail)...);
}
#ifdef LOCAL
#define debug(...) cerr << " ";\
cerr << #__VA_ARGS__ << " :[" << __LINE__ << ":" << __FUNCTION__ << "]" << '\n';\
cerr << " ";\
debug_out(__VA_ARGS__)
#else
#define debug(...) 42
#endif

template<typename T> T gcd(T x,T y){return y!=0?gcd(y,x%y):x;}
template<typename T> T lcm(T x,T y){return x/gcd(x,y)*y;}

template<class T1,class T2> inline bool chmin(T1 &a,T2 b){
    if (a>b){a=b; return true;} return false;
}
template<class T1,class T2> inline bool chmax(T1 &a,T2 b){
    if (a<b){a=b; return true;} return false;
}
#pragma endregion

template<uint32_t mod> class modint{
    using i64=int64_t;
    using u32=uint32_t;
    using u64=uint64_t;
public:
    u32 v;
    constexpr modint(const i64 x=0) noexcept :v(x<0?mod-1-(-(x+1)%mod):x%mod){}
    constexpr u32 &value() noexcept {return v;}
    constexpr const u32 &value() const noexcept {return v;}
    constexpr modint operator+(const modint &rhs) const noexcept {return modint(*this)+=rhs;}
    constexpr modint operator-(const modint &rhs) const noexcept {return modint(*this)-=rhs;}
    constexpr modint operator*(const modint &rhs) const noexcept {return modint(*this)*=rhs;}
    constexpr modint operator/(const modint &rhs) const noexcept {return modint(*this)/=rhs;}
    constexpr modint &operator+=(const modint &rhs) noexcept {
        v+=rhs.v;
        if (v>=mod) v-=mod;
        return *this;
    }
    constexpr modint &operator-=(const modint &rhs) noexcept {
        if (v<rhs.v) v+=mod;
        v-=rhs.v;
        return *this;
    }
    constexpr modint &operator*=(const modint &rhs) noexcept {
        v=(u64)v*rhs.v%mod;
        return *this;
    }
    constexpr modint &operator/=(const modint &rhs) noexcept {
        return *this*=rhs.pow(mod-2);
    }
    constexpr modint pow(u64 exp) const noexcept {
        modint self(*this),res(1);
        while (exp>0){
            if (exp&1) res*=self;
            self*=self; exp>>=1;
        }
        return res;
    }
    constexpr modint &operator++() noexcept {if (++v==mod) v=0; return *this;}
    constexpr modint &operator--() noexcept {if (v==0) v=mod; return --v,*this;}
    constexpr modint operator++(int) noexcept {modint t=*this; return ++*this,t;}
    constexpr modint operator--(int) noexcept {modint t=*this; return --*this,t;}
    constexpr modint operator-() const noexcept {return modint(mod-v);}
    template<class T> friend constexpr modint operator+(T x,modint y) noexcept {return modint(x)+y;}
    template<class T> friend constexpr modint operator-(T x,modint y) noexcept {return modint(x)-y;}
    template<class T> friend constexpr modint operator*(T x,modint y) noexcept {return modint(x)*y;}
    template<class T> friend constexpr modint operator/(T x,modint y) noexcept {return modint(x)/y;}
    constexpr bool operator==(const modint &rhs) const noexcept {return v==rhs.v;}
    constexpr bool operator!=(const modint &rhs) const noexcept {return v!=rhs.v;}
    constexpr bool operator!() const noexcept {return !v;}
    friend istream &operator>>(istream &s,modint &rhs) noexcept {
        i64 v; rhs=modint{(s>>v,v)}; return s;
    }
    friend ostream &operator<<(ostream &s,const modint &rhs) noexcept {
        return s<<rhs.v;
    }
};

using mint=modint<MOD>;

int main(){
    cin.tie(0);
    ios::sync_with_stdio(false);
    int N; cin >> N;
    deque<int> A;
    for (int i=0;i<N;++i){
        int a; cin >> a;
        A.emplace_back(a);
    }

    int sum=0;
    while (!A.empty()&&A.front()==1) ++sum,A.pop_front();
    while (!A.empty()&&A.back()==1) ++sum,A.pop_back();
    if (A.empty()){
        cout << sum << '\n';
        return 0;
    }
    N=A.size();

    ll prod=1; bool ok=false;
    for (int x:A){
        prod*=x;
        if (prod>=2*N){
            ok=true;
            break;
        }
    }

    if (ok){
        mint ans=1;
        for (int x:A) ans*=x;
        cout << ans+sum << '\n';
        return 0;
    }

    vector<int> v;
    for (int i=0;i<N;){
        int p=1;
        if (A[i]==1){
            p=0;
            while (i<N&&A[i]==1) ++p,++i;
        } else {
            while (i<N&&A[i]!=1) p*=A[i],++i;
        }
        v.emplace_back(p);
    }

    int n=v.size(),m=(n-1)/2;
    int ans=0;
    for (int mask=0;mask<(1<<m);++mask){
        int S=0,cur=v[0];
        for (int i=0;i<m;++i){
            if (mask&1<<i) S+=cur+v[2*i+1],cur=v[2*i+2];
            else cur*=v[2*i+2];
        }
        ans=max(ans,S+cur);
    }

    cout << ans+sum << '\n';
}
0