結果

問題 No.1187 皇帝ペンギン
ユーザー bond_cmprogbond_cmprog
提出日時 2020-08-22 19:52:33
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 26 ms / 1,000 ms
コード長 7,701 bytes
コンパイル時間 2,124 ms
コンパイル使用メモリ 203,488 KB
実行使用メモリ 25,452 KB
平均クエリ数 20.96
最終ジャッジ日時 2024-07-17 06:40:15
合計ジャッジ時間 6,202 ms
ジャッジサーバーID
(参考情報)
judge2 / judge4
このコードへのチャレンジ
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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 26 ms
24,940 KB
testcase_01 AC 23 ms
25,184 KB
testcase_02 AC 23 ms
25,196 KB
testcase_03 AC 24 ms
24,556 KB
testcase_04 AC 23 ms
24,940 KB
testcase_05 AC 24 ms
24,940 KB
testcase_06 AC 24 ms
24,556 KB
testcase_07 AC 24 ms
24,940 KB
testcase_08 AC 25 ms
24,556 KB
testcase_09 AC 24 ms
25,196 KB
testcase_10 AC 23 ms
24,812 KB
testcase_11 AC 23 ms
24,580 KB
testcase_12 AC 24 ms
24,812 KB
testcase_13 AC 23 ms
25,196 KB
testcase_14 AC 24 ms
24,812 KB
testcase_15 AC 24 ms
24,940 KB
testcase_16 AC 24 ms
24,556 KB
testcase_17 AC 23 ms
24,556 KB
testcase_18 AC 23 ms
25,196 KB
testcase_19 AC 24 ms
25,240 KB
testcase_20 AC 24 ms
24,556 KB
testcase_21 AC 23 ms
25,196 KB
testcase_22 AC 24 ms
24,800 KB
testcase_23 AC 24 ms
24,812 KB
testcase_24 AC 24 ms
24,556 KB
testcase_25 AC 24 ms
25,196 KB
testcase_26 AC 24 ms
25,452 KB
testcase_27 AC 23 ms
25,196 KB
testcase_28 AC 23 ms
24,812 KB
testcase_29 AC 24 ms
24,556 KB
testcase_30 AC 23 ms
24,812 KB
testcase_31 AC 23 ms
25,196 KB
testcase_32 AC 23 ms
25,208 KB
testcase_33 AC 23 ms
24,824 KB
testcase_34 AC 24 ms
25,208 KB
testcase_35 AC 24 ms
24,568 KB
testcase_36 AC 24 ms
25,208 KB
testcase_37 AC 24 ms
24,952 KB
testcase_38 AC 25 ms
24,952 KB
testcase_39 AC 24 ms
25,208 KB
testcase_40 AC 24 ms
24,568 KB
testcase_41 AC 23 ms
24,952 KB
testcase_42 AC 24 ms
25,220 KB
testcase_43 AC 24 ms
24,836 KB
testcase_44 AC 24 ms
24,964 KB
testcase_45 AC 24 ms
25,220 KB
testcase_46 AC 24 ms
25,208 KB
testcase_47 AC 24 ms
24,556 KB
testcase_48 AC 24 ms
25,196 KB
testcase_49 AC 23 ms
24,800 KB
testcase_50 AC 24 ms
25,196 KB
testcase_51 AC 24 ms
24,940 KB
testcase_52 AC 23 ms
24,568 KB
testcase_53 AC 24 ms
24,824 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>
#define REP(i, n) for(int i = 0;i < n;i++)
#define ll long long
using namespace std;
typedef pair<int, int> P;
typedef pair<ll,ll> LP;
const int dx[8] = {1, 0, -1, 0, 1, -1, -1, 1};
const int dy[8] = {0, 1, 0, -1, 1, 1, -1, -1};
const int INF = 1000000000;
const ll LINF = 1000000000000000000;//1e18
const ll MOD = 1000000007;
const ll MOD2 = 998244353;
const double PI = acos(-1.0);
// const double EPS = 1e-10;

template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; }

/*  ----------------------- DEBUG FUNCTION ---------------------------- */
#define DUMPOUT cerr
void dump_function() { DUMPOUT << ' '; }
void dump_function(bool a) { DUMPOUT << a; }
void dump_function(int a) { DUMPOUT << a; }
void dump_function(long long a) { DUMPOUT << a; }
void dump_function(char a) { DUMPOUT << a; }
void dump_function(string &a) { DUMPOUT << a; }
void dump_function(double a) { DUMPOUT << a; }
template <class T> void dump_function(const vector<T> &);
template <class T, size_t size> void dump_function(const array<T, size> &);
template <class T, class L> void dump_function(const pair<T, L> &p);
template <class T, size_t size> void dump_function(const T (&)[size]);
template <class T> void dump_function(const vector<T> &a) {
    if(a.empty()) return;
    dump_function(a[0]);
    for(auto i = a.begin(); ++i != a.end();) {
        DUMPOUT << " ";
        dump_function(*i);
    }
    DUMPOUT << endl;
}
template <class T> void dump_function(const deque<T> &a) {
    if(a.empty()) return;
    dump_function(a[0]);
    for(auto i = a.begin(); ++i != a.end();) {
        DUMPOUT << " ";
        dump_function(*i);
    }
}
template <class T, size_t size> void dump_function(const array<T, size> &a) {
    dump_function(a[0]);
    for(auto i = a.begin(); ++i != a.end();) {
        DUMPOUT << " ";
        dump_function(*i);
    }
}
template <class T, class L> void dump_function(const pair<T, L> &p) {
    DUMPOUT << '(';
    dump_function(p.first);
    DUMPOUT << ",";
    dump_function(p.second);
    DUMPOUT << ')';
}
template <class T> void dump_function(set<T> &x) {
    for(auto e : x) dump_function(e), DUMPOUT << " ";
    DUMPOUT << endl;
}
template <class T> void dump_function(multiset<T> &x) {
    for(auto e : x) dump_function(e), DUMPOUT << " ";
    DUMPOUT << endl;
}
template <class T, size_t size> void dump_function(const T (&a)[size]) {
    dump_function(a[0]);
    for(auto i = a; ++i != end(a);) {
        DUMPOUT << " ";
        dump_function(*i);
    }
}
template <class T> void dump_function(const T &a) { DUMPOUT << a; }
int dump_out() {
    DUMPOUT << '\n';
    return 0;
}
template <class T> int dump_out(const T &t) {
    dump_function(t);
    DUMPOUT << '\n';
    return 0;
}
template <class Head, class... Tail> int dump_out(const Head &head, const Tail &... tail) {
    dump_function(head);
    DUMPOUT << ' ';
    dump_out(tail...);
    return 0;
}

#ifdef DEBUG_
#define dump(x)                                                                                                                                               \
    DUMPOUT << #x << ": ";                                                                                                                                        \
    dump_function(x);                                                                                                                                                  \
    DUMPOUT << endl;
void dumps() {}
template <class T> void dumps(const T &t) {
    dump_function(t);
    DUMPOUT << " ";
}
template <class Head, class... Tail> void dumps(const Head &head, const Tail &... tail) {
    dump_function(head);
    DUMPOUT << ' ';
    dump_out(tail...);
}
#else
#define dump(x)
template <class... T> void dumps(const T &...) {}
#endif
/*  ----------------------- DEBUG FUNCTION ---------------------------- */

template<int MOD> struct Fp {
    long long val;
    constexpr Fp(long long v = 0) noexcept : val(v % MOD) {
        if (val < 0) val += MOD;
    }
    constexpr int getmod() { return MOD; }
    constexpr Fp operator - () const noexcept {
        return val ? MOD - val : 0;
    }
    constexpr Fp operator + (const Fp& r) const noexcept { return Fp(*this) += r; }
    constexpr Fp operator - (const Fp& r) const noexcept { return Fp(*this) -= r; }
    constexpr Fp operator * (const Fp& r) const noexcept { return Fp(*this) *= r; }
    constexpr Fp operator / (const Fp& r) const noexcept { return Fp(*this) /= r; }
    constexpr Fp& operator += (const Fp& r) noexcept {
        val += r.val;
        if (val >= MOD) val -= MOD;
        return *this;
    }
    constexpr Fp& operator -= (const Fp& r) noexcept {
        val -= r.val;
        if (val < 0) val += MOD;
        return *this;
    }
    constexpr Fp& operator *= (const Fp& r) noexcept {
        val = val * r.val % MOD;
        return *this;
    }
    constexpr Fp& operator /= (const Fp& r) noexcept {
        long long a = r.val, b = MOD, u = 1, v = 0;
        while (b) {
            long long t = a / b;
            a -= t * b; swap(a, b);
            u -= t * v; swap(u, v);
        }
        val = val * u % MOD;
        if (val < 0) val += MOD;
        return *this;
    }
    constexpr bool operator == (const Fp& r) const noexcept {
        return this->val == r.val;
    }
    constexpr bool operator != (const Fp& r) const noexcept {
        return this->val != r.val;
    }
    friend constexpr ostream& operator << (ostream &os, const Fp<MOD>& x) noexcept {
        return os << x.val;
    }
    friend constexpr Fp<MOD> modpow(const Fp<MOD> &a, long long n) noexcept {
        if (n == 0) return 1;
        auto t = modpow(a, n / 2);
        t = t * t;
        if (n & 1) t = t * a;
        return t;
    }
};

template<class T> struct BiCoef {
    vector<T> fact_, inv_, finv_;
    constexpr BiCoef() {}
    constexpr BiCoef(int n) noexcept : fact_(n, 1), inv_(n, 1), finv_(n, 1) {
        init(n);
    }
    constexpr void init(int n) noexcept {
        fact_.assign(n, 1), inv_.assign(n, 1), finv_.assign(n, 1);
        int MOD = fact_[0].getmod();
        for(int i = 2; i < n; i++){
            fact_[i] = fact_[i-1] * i;
            inv_[i] = -inv_[MOD%i] * (MOD/i);
            finv_[i] = finv_[i-1] * inv_[i];
        }
    }
    constexpr T com(int n, int k) const noexcept {
        if (n < k || n < 0 || k < 0) return 0;
        return fact_[n] * finv_[k] * finv_[n-k];
    }
    constexpr T fact(int n) const noexcept {
        if (n < 0) return 0;
        return fact_[n];
    }
    constexpr T inv(int n) const noexcept {
        if (n < 0) return 0;
        return inv_[n];
    }
    constexpr T finv(int n) const noexcept {
        if (n < 0) return 0;
        return finv_[n];
    }
    constexpr T perm(int n, int k) const noexcept {
        if (n < k || n < 0 || k < 0) return 0;
        return fact_[n] * finv_[n-k];
    }
};

using mint = Fp<MOD2>;
BiCoef<mint> bc;
// using vec = vector<mint>;
// using mat = vector<vec>;


void solve(){
    auto check = [&](int x, int cnt = 2) -> bool{
        cout << "? " << x << endl;
        string s;
        cin >> s;
        if(cnt == 1) return s == "safe";
        cout << "? " << x + 1 << endl;
        string t;
        cin >> t;
        return (s == "safe") or (t == "safe");
    };
    int l = 0, r = 1001;
    while(r - l > 1){
        int m = (r + l) >> 1;
        if(check(m)) l = m;
        else r = m;
    }
    cout << "! " << l << endl;
}

int main(){
    cin.tie(0);
    ios::sync_with_stdio(false);
    solve();
    // int T; cin >> T; REP(t,T) solve();
}
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