QOJ.ac

QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#289280#7863. Parity Gameucup-team112#WA 3ms3508kbC++2013.5kb2023-12-23 16:39:352023-12-23 16:39:36

Judging History

你现在查看的是最新测评结果

  • [2023-12-23 16:39:36]
  • 评测
  • 测评结果:WA
  • 用时:3ms
  • 内存:3508kb
  • [2023-12-23 16:39:35]
  • 提交

answer

// #pragma GCC target("avx2")
// #pragma GCC optimize("O3")
// #pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
using namespace std;

namespace templates {
// type
using ll  = long long;
using ull = unsigned long long;
template <class T>
using pq = priority_queue<T>;
template <class T>
using qp = priority_queue<T, vector<T>, greater<T>>;
#define vec(T, A, ...) vector<T> A(__VA_ARGS__);
#define vvec(T, A, h, ...) vector<vector<T>> A(h, vector<T>(__VA_ARGS__));
#define vvvec(T, A, h1, h2, ...) vector<vector<vector<T>>> A(h1, vector<vector<T>>(h2, vector<T>(__VA_ARGS__)));

// for loop
#define fori1(a) for (ll _ = 0; _ < (a); _++)
#define fori2(i, a) for (ll i = 0; i < (a); i++)
#define fori3(i, a, b) for (ll i = (a); i < (b); i++)
#define fori4(i, a, b, c) for (ll i = (a); ((c) > 0 || i > (b)) && ((c) < 0 || i < (b)); i += (c))
#define overload4(a, b, c, d, e, ...) e
#define fori(...) overload4(__VA_ARGS__, fori4, fori3, fori2, fori1)(__VA_ARGS__)

// declare and input
// clang-format off
#define INT(...) int __VA_ARGS__; inp(__VA_ARGS__);
#define LL(...) ll __VA_ARGS__; inp(__VA_ARGS__);
#define STRING(...) string __VA_ARGS__; inp(__VA_ARGS__);
#define CHAR(...) char __VA_ARGS__; inp(__VA_ARGS__);
#define DOUBLE(...) double __VA_ARGS__; STRING(str___); __VA_ARGS__ = stod(str___);
#define VEC(T, A, n) vector<T> A(n); inp(A);
#define VVEC(T, A, n, m) vector<vector<T>> A(n, vector<T>(m)); inp(A);
// clang-format on

// const value
const ll MOD1   = 1000000007;
const ll MOD9   = 998244353;
const double PI = acos(-1);

// other macro
#ifndef RIN__LOCAL
// #define endl "\n"
#endif
#define spa ' '
#define len(A) ll(A.size())
#define all(A) begin(A), end(A)

// function
vector<char> stoc(string &S) {
    int n = S.size();
    vector<char> ret(n);
    for (int i = 0; i < n; i++) ret[i] = S[i];
    return ret;
}
string ctos(vector<char> &S) {
    int n      = S.size();
    string ret = "";
    for (int i = 0; i < n; i++) ret += S[i];
    return ret;
}

template <class T>
auto min(const T &a) {
    return *min_element(all(a));
}
template <class T>
auto max(const T &a) {
    return *max_element(all(a));
}
template <class T, class S>
auto clamp(T &a, const S &l, const S &r) {
    return (a > r ? r : a < l ? l : a);
}
template <class T, class S>
inline bool chmax(T &a, const S &b) {
    return (a < b ? a = b, 1 : 0);
}
template <class T, class S>
inline bool chmin(T &a, const S &b) {
    return (a > b ? a = b, 1 : 0);
}
template <class T, class S>
inline bool chclamp(T &a, const S &l, const S &r) {
    auto b = clamp(a, l, r);
    return (a != b ? a = b, 1 : 0);
}

template <typename T>
T sum(vector<T> &A) {
    T tot = 0;
    for (auto a : A) tot += a;
    return tot;
}

template <typename T>
vector<T> compression(vector<T> X) {
    sort(all(X));
    X.erase(unique(all(X)), X.end());
    return X;
}

// input and output
namespace io {

// vector<T>
template <typename T>
istream &operator>>(istream &is, vector<T> &A) {
    for (auto &a : A) is >> a;
    return is;
}
template <typename T>
ostream &operator<<(ostream &os, vector<T> &A) {
    for (size_t i = 0; i < A.size(); i++) {
        os << A[i];
        if (i != A.size() - 1) os << ' ';
    }
    return os;
}

// vector<vector<T>>
template <typename T>
istream &operator>>(istream &is, vector<vector<T>> &A) {
    for (auto &a : A) is >> a;
    return is;
}
template <typename T>
ostream &operator<<(ostream &os, vector<vector<T>> &A) {
    for (size_t i = 0; i < A.size(); i++) {
        os << A[i];
        if (i != A.size() - 1) os << endl;
    }
    return os;
}

// pair<S, T>
template <typename S, typename T>
istream &operator>>(istream &is, pair<S, T> &A) {
    is >> A.first >> A.second;
    return is;
}
template <typename S, typename T>
ostream &operator<<(ostream &os, pair<S, T> &A) {
    os << A.first << ' ' << A.second;
    return os;
}

// vector<pair<S, T>>
template <typename S, typename T>
istream &operator>>(istream &is, vector<pair<S, T>> &A) {
    for (size_t i = 0; i < A.size(); i++) {
        is >> A[i];
    }
    return is;
}
template <typename S, typename T>
ostream &operator<<(ostream &os, vector<pair<S, T>> &A) {
    for (size_t i = 0; i < A.size(); i++) {
        os << A[i];
        if (i != A.size() - 1) os << endl;
    }
    return os;
}

// tuple
template <typename T, size_t N>
struct TuplePrint {
    static ostream &print(ostream &os, const T &t) {
        TuplePrint<T, N - 1>::print(os, t);
        os << ' ' << get<N - 1>(t);
        return os;
    }
};
template <typename T>
struct TuplePrint<T, 1> {
    static ostream &print(ostream &os, const T &t) {
        os << get<0>(t);
        return os;
    }
};
template <typename... Args>
ostream &operator<<(ostream &os, const tuple<Args...> &t) {
    TuplePrint<decltype(t), sizeof...(Args)>::print(os, t);
    return os;
}

// io functions
void FLUSH() {
    cout << flush;
}

void print() {
    cout << endl;
}
template <class Head, class... Tail>
void print(Head &&head, Tail &&...tail) {
    cout << head;
    if (sizeof...(Tail)) cout << spa;
    print(std::forward<Tail>(tail)...);
}

template <typename T, typename S>
void prisep(vector<T> &A, S sep) {
    int n = A.size();
    for (int i = 0; i < n; i++) {
        cout << A[i];
        if (i != n - 1) cout << sep;
    }
    cout << endl;
}
template <typename T, typename S>
void priend(T A, S end) {
    cout << A << end;
}
template <typename T>
void prispa(T A) {
    priend(A, spa);
}
template <typename T, typename S>
bool printif(bool f, T A, S B) {
    if (f)
        print(A);
    else
        print(B);
    return f;
}

template <class... T>
void inp(T &...a) {
    (cin >> ... >> a);
}

} // namespace io
using namespace io;

// read graph
vector<vector<int>> read_edges(int n, int m, bool direct = false, int indexed = 1) {
    vector<vector<int>> edges(n, vector<int>());
    for (int i = 0; i < m; i++) {
        INT(u, v);
        u -= indexed;
        v -= indexed;
        edges[u].push_back(v);
        if (!direct) edges[v].push_back(u);
    }
    return edges;
}
vector<vector<int>> read_tree(int n, int indexed = 1) {
    return read_edges(n, n - 1, false, indexed);
}

template <typename T = long long>
vector<vector<pair<int, T>>> read_wedges(int n, int m, bool direct = false, int indexed = 1) {
    vector<vector<pair<int, T>>> edges(n, vector<pair<int, T>>());
    for (int i = 0; i < m; i++) {
        INT(u, v);
        T w;
        inp(w);
        u -= indexed;
        v -= indexed;
        edges[u].push_back({v, w});
        if (!direct) edges[v].push_back({u, w});
    }
    return edges;
}
template <typename T = long long>
vector<vector<pair<int, T>>> read_wtree(int n, int indexed = 1) {
    return read_wedges<T>(n, n - 1, false, indexed);
}

// yes / no
namespace yesno {

// yes
inline bool yes(bool f = true) {
    cout << (f ? "yes" : "no") << endl;
    return f;
}
inline bool Yes(bool f = true) {
    cout << (f ? "Yes" : "No") << endl;
    return f;
}
inline bool YES(bool f = true) {
    cout << (f ? "YES" : "NO") << endl;
    return f;
}

// no
inline bool no(bool f = true) {
    cout << (!f ? "yes" : "no") << endl;
    return f;
}
inline bool No(bool f = true) {
    cout << (!f ? "Yes" : "No") << endl;
    return f;
}
inline bool NO(bool f = true) {
    cout << (!f ? "YES" : "NO") << endl;
    return f;
}

// possible
inline bool possible(bool f = true) {
    cout << (f ? "possible" : "impossible") << endl;
    return f;
}
inline bool Possible(bool f = true) {
    cout << (f ? "Possible" : "Impossible") << endl;
    return f;
}
inline bool POSSIBLE(bool f = true) {
    cout << (f ? "POSSIBLE" : "IMPOSSIBLE") << endl;
    return f;
}

// impossible
inline bool impossible(bool f = true) {
    cout << (!f ? "possible" : "impossible") << endl;
    return f;
}
inline bool Impossible(bool f = true) {
    cout << (!f ? "Possible" : "Impossible") << endl;
    return f;
}
inline bool IMPOSSIBLE(bool f = true) {
    cout << (!f ? "POSSIBLE" : "IMPOSSIBLE") << endl;
    return f;
}

// Alice Bob
inline bool Alice(bool f = true) {
    cout << (f ? "Alice" : "Bob") << endl;
    return f;
}
inline bool Bob(bool f = true) {
    cout << (f ? "Bob" : "Alice") << endl;
    return f;
}

// Takahashi Aoki
inline bool Takahashi(bool f = true) {
    cout << (f ? "Takahashi" : "Aoki") << endl;
    return f;
}
inline bool Aoki(bool f = true) {
    cout << (f ? "Aoki" : "Takahashi") << endl;
    return f;
}

} // namespace yesno
using namespace yesno;

} // namespace templates
using namespace templates;

void solve() {
    LL(n, t);
    VEC(ll, A, n);

    auto f = [&](int p, char s) {
        p--;
        if (s == '+') {
            A[p] = (A[p] + A[p + 1]) % 2;
        } else {
            A[p] = (A[p] * A[p + 1]) % 2;
        }
        fori(i, p + 1, len(A) - 1) {
            A[i] = A[i + 1];
        }
        A.pop_back();

#ifdef RIN__LOCAL
        print("A:", A);
#endif
    };
    int p;
    char s;

    if (n % 2 == 0 and t % 2 == 0) {
        print("Alice");
        while (len(A) > 2) {
            print(1, '+');
            f(1, '+');
            inp(p, s);
            f(p, s);
        }
        if (A[0] + A[1] == 1) {
            print(1, '*');
            f(1, '*');
        } else {
            print(1, '+');
            f(1, '+');
        }
        return;
    } else if (n % 2 == 1 and t % 2 == 1) {
        print("Bob");
        inp(p, s);
        f(p, s);
        while (len(A) > 2) {
            print(1, '+');
            f(1, '+');
            inp(p, s);
            f(p, s);
        }
        if (A[0] + A[1] == 1) {
            print(1, '*');
            f(1, '*');
        } else {
            print(1, '+');
            f(1, '+');
        }
        return;
    }

    auto f1 = [&]() -> int {
        for (int i = 0; i < len(A) - 1; i++) {
            if (A[i] == 1 and A[i + 1] == 1) {
                return i;
            }
        }
        for (int i = 0; i < len(A) - 1; i++) {
            if (A[i] == 1 or A[i + 1] == 1) {
                return i;
            }
        }
        return 0;
    };
    auto f2 = [&]() -> int {
        if (A[0] == 0) {
            return 0;
        } else if (A.back() == 0) {
            return len(A) - 2;
        }
        for (int i = 0; i < len(A) - 1; i++) {
            if (A[i] == 0 and A[i + 1] == 0) {
                return i;
            }
        }
        for (int i = 0; i < len(A) - 1; i++) {
            if (A[i] == 0 or A[i + 1] == 0) {
                return i;
            }
        }
        return -1;
    };

    if (n % 2 == 0) {
        auto B = A;
        bool t = true;
        while (len(A) >= 3) {
            if (t) {
                int p = f2() + 1;
                if (p == 0) {
                    f(1, '*');
                } else {
                    f(p, '+');
                }
            } else {
                f(f1() + 1, '*');
            }
            t = !t;
        }
        bool win = (A[0] == 1 or A[1] == 1);
        A        = B;
        if (win) {
            print("Alice");
            while (len(A) >= 3) {
                p = f2() + 1;
                if (p == 0) {
                    print(1, '*');
                    f(1, '*');
                } else {
                    print(p, '+');
                    f(p, '+');
                }
                inp(p, s);
                f(p, s);
            }
            if (A[0] + A[1] == 2) {
                print(1, '*');
                f(1, '*');
            } else {
                print(1, '+');
                f(1, '+');
            }

        } else {
            print("Bob");
            inp(p, s);
            f(p, s);
            while (len(A) >= 3) {
                p = f1() + 1;
                print(p, '*');
                f(p, '*');
                inp(p, s);
                f(p, s);
            }
        }
    } else {
        auto B = A;
        bool t = false;
        while (len(A) >= 3) {
            if (t) {
                int p = f2() + 1;
                if (p == 0) {
                    f(1, '*');
                } else {
                    f(p, '+');
                }
            } else {
                f(f1() + 1, '*');
            }
            t = !t;
        }
        bool win = (A[0] == 1 or A[1] == 1);
        A        = B;
        if (win) {
            print("Bob");
            inp(p, s);
            f(p, s);
            while (len(A) >= 3) {
                p = f2() + 1;
                if (p == 0) {
                    print(1, '*');
                    f(1, '*');
                } else {
                    print(p, '+');
                    f(p, '+');
                }
                inp(p, s);
                f(p, s);
            }
            if (A[0] + A[1] == 2) {
                print(1, '*');
                f(1, '*');
            } else {
                print(1, '+');
                f(1, '+');
            }
        } else {
            print("Alice");
            while (len(A) >= 3) {
                p = f1() + 1;
                print(p, '*');
                f(p, '*');
                inp(p, s);
                f(p, s);
            }
        }
    }
}

int main() {
    // cin.tie(0)->sync_with_stdio(0);
    // cout << fixed << setprecision(12);
    int t;
    t = 1;
    // cin >> t;
    while (t--) solve();
    return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 1ms
memory: 3488kb

input:

4 1
0 1 0 1
1 *
1

output:

Alice
1 +
1 +

result:

ok The player wins!

Test #2:

score: 0
Accepted
time: 0ms
memory: 3472kb

input:

4 0
1 0 1 0
1 *
1

output:

Alice
1 +
1 *

result:

ok The player wins!

Test #3:

score: 0
Accepted
time: 0ms
memory: 3504kb

input:

5 1
1 1 1 0 0
4 +
1 +
1

output:

Bob
1 +
1 *

result:

ok The player wins!

Test #4:

score: 0
Accepted
time: 1ms
memory: 3508kb

input:

3 0
1 1 1
1 +
1

output:

Bob
1 +

result:

ok The player wins!

Test #5:

score: 0
Accepted
time: 1ms
memory: 3500kb

input:

3 1
1 0 1
1 *
1

output:

Bob
1 *

result:

ok The player wins!

Test #6:

score: 0
Accepted
time: 0ms
memory: 3436kb

input:

3 0
1 0 1
1 *
1

output:

Bob
1 +

result:

ok The player wins!

Test #7:

score: 0
Accepted
time: 1ms
memory: 3488kb

input:

2 1
0 1
1

output:

Alice
1 +

result:

ok The player wins!

Test #8:

score: -100
Wrong Answer
time: 3ms
memory: 3432kb

input:

499 0
0 1 1 1 1 1 1 1 0 1 1 1 0 1 1 1 0 1 0 1 1 1 0 1 1 1 1 1 0 1 1 1 1 1 0 1 1 1 0 1 0 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 0 1 1 1 1 1 0 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 0 1 1 1 1 1 0 1 1 1 0 1 1 1 0 1 1 1 0 1 1 1 1 1 0 1 0 1 0 1 0 1 1 1 1 1 1 1 1 1 1 1 0 1 0 1 1 1 0 1 1 1 1 1 1 1 0 1 0 ...

output:

Bob
1 +
1 +
1 +
1 +
489 +
2 +
4 +
8 +
10 +
10 +
12 +
12 +
14 +
18 +
18 +
18 +
18 +
20 +
20 +
22 +
22 +
24 +
24 +
24 +
26 +
26 +
26 +
26 +
28 +
28 +
28 +
30 +
30 +
32 +
34 +
36 +
38 +
38 +
46 +
46 +
46 +
46 +
46 +
50 +
52 +
52 +
52 +
56 +
56 +
56 +
58 +
58 +
60 +
64 +
66 +
68 +
68 +
70 +
72 +
74 +
74...

result:

wrong answer The interactor wins!