結果

問題 No.2252 Find Zero
ユーザー SnowBeenDidingSnowBeenDiding
提出日時 2023-03-24 21:32:35
言語 C++23
(gcc 12.3.0 + boost 1.83.0)
結果
WA  
実行時間 -
コード長 6,608 bytes
コンパイル時間 5,446 ms
コンパイル使用メモリ 310,980 KB
実行使用メモリ 25,452 KB
平均クエリ数 151.50
最終ジャッジ日時 2024-09-18 16:49:57
合計ジャッジ時間 7,764 ms
ジャッジサーバーID
(参考情報)
judge5 / 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 WA -
testcase_01 WA -
testcase_02 AC 56 ms
25,196 KB
testcase_03 AC 72 ms
25,196 KB
testcase_04 WA -
testcase_05 AC 57 ms
25,196 KB
testcase_06 WA -
testcase_07 WA -
testcase_08 AC 69 ms
24,836 KB
testcase_09 WA -
testcase_10 AC 55 ms
24,556 KB
testcase_11 AC 54 ms
24,812 KB
testcase_12 AC 54 ms
24,812 KB
testcase_13 WA -
testcase_14 AC 56 ms
24,428 KB
testcase_15 WA -
testcase_16 WA -
testcase_17 AC 54 ms
24,812 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 #
プレゼンテーションモードにする

#include <atcoder/all>
using namespace atcoder;
using mint = modint998244353;
const long long MOD = 998244353;
// using mint = modint1000000007;
// const long long MOD = 1000000007;
// using mint = modint;//mint::set_mod(MOD);
#include <bits/stdc++.h>
#define rep(i, a, b) for (ll i = (ll)(a); i < (ll)(b); i++)
#define repeq(i, a, b) for (ll i = (ll)(a); i <= (ll)(b); i++)
#define repreq(i, a, b) for (ll i = (ll)(a); i >= (ll)(b); i--)
// #define endl '\n' // fflush(stdout);
#define cYes cout << "Yes" << endl
#define cNo cout << "No" << endl
#define sortr(v) sort(v, greater<>())
#define pb push_back
#define pob pop_back
#define mp make_pair
#define mt make_tuple
#define FI first
#define SE second
#define ALL(v) (v).begin(), (v).end()
#define INFLL 3000000000000000100LL
#define INF 1000000100
#define PI acos(-1.0L)
#define TAU (PI * 2.0L)
using namespace std;
typedef long long ll;
typedef pair<ll, ll> Pll;
typedef tuple<ll, ll, ll> Tlll;
typedef vector<int> Vi;
typedef vector<Vi> VVi;
typedef vector<ll> Vl;
typedef vector<Vl> VVl;
typedef vector<VVl> VVVl;
typedef vector<Tlll> VTlll;
typedef vector<mint> Vm;
typedef vector<Vm> VVm;
typedef vector<string> Vs;
typedef vector<double> Vd;
typedef vector<char> Vc;
typedef vector<bool> Vb;
typedef vector<Pll> VPll;
typedef priority_queue<ll> PQl;
typedef priority_queue<ll, vector<ll>, greater<ll>> PQlr;
/* inout */
ostream &operator<<(ostream &os, mint const &m) {
os << m.val();
return os;
}
istream &operator>>(istream &is, mint &m) {
long long n;
is >> n, m = n;
return is;
}
template <typename T>
ostream &operator<<(ostream &os, const vector<T> &v) {
int n = v.size();
rep(i, 0, n) { os << v[i] << " \n"[i == n - 1]; }
return os;
}
template <typename T>
ostream &operator<<(ostream &os, const vector<vector<T>> &v) {
int n = v.size();
rep(i, 0, n) os << v[i];
return os;
}
template <typename T, typename S>
ostream &operator<<(ostream &os, pair<T, S> const &p) {
os << p.first << ' ' << p.second;
return os;
}
template <typename T, typename S>
ostream &operator<<(ostream &os, const map<T, S> &mp) {
for (auto &[key, val] : mp) {
os << key << ':' << val << '\n';
}
return os;
}
template <typename T>
ostream &operator<<(ostream &os, const set<T> &st) {
auto itr = st.begin();
for (int i = 0; i < (int)st.size(); i++) {
os << *itr << (i + 1 != (int)st.size() ? ' ' : '\n');
itr++;
}
return os;
}
template <typename T>
ostream &operator<<(ostream &os, multiset<T> &st) {
auto itr = st.begin();
for (int i = 0; i < (int)st.size(); i++) {
os << *itr << (i + 1 != (int)st.size() ? ' ' : '\n');
itr++;
}
return os;
}
template <typename T>
ostream &operator<<(ostream &os, queue<T> q) {
while (q.size()) {
os << q.front();
q.pop();
os << " \n"[q.empty()];
}
return os;
}
template <typename T>
ostream &operator<<(ostream &os, stack<T> st) {
vector<T> v;
while (st.size()) {
v.push_back(st.top());
st.pop();
}
reverse(ALL(v));
os << v;
return os;
}
template <class T, class Container, class Compare>
ostream &operator<<(ostream &os, priority_queue<T, Container, Compare> pq) {
vector<T> v;
while (pq.size()) {
v.push_back(pq.top());
pq.pop();
}
os << v;
return os;
}
template <typename T>
istream &operator>>(istream &is, vector<T> &v) {
for (T &in : v) is >> in;
return is;
}
template <typename T1, typename T2>
istream &operator>>(istream &is, pair<T1, T2> &p) {
is >> p.first >> p.second;
return is;
}
/* useful */
template <typename T>
int SMALLER(vector<T> &a, T x) {
return lower_bound(a.begin(), a.end(), x) - a.begin();
}
template <typename T>
int orSMALLER(vector<T> &a, T x) {
return upper_bound(a.begin(), a.end(), x) - a.begin();
}
template <typename T>
int BIGGER(vector<T> &a, T x) {
return a.size() - orSMALLER(a, x);
}
template <typename T>
int orBIGGER(vector<T> &a, T x) {
return a.size() - SMALLER(a, x);
}
template <typename T>
int COUNT(vector<T> &a, T x) {
return upper_bound(ALL(a), x) - lower_bound(ALL(a), x);
}
template <typename T, typename S>
bool chmax(T &a, S b) {
if (a < b) {
a = b;
return 1;
}
return 0;
}
template <typename T, typename S>
bool chmin(T &a, S b) {
if (a > b) {
a = b;
return 1;
}
return 0;
}
template <typename T>
void press(T &v) {
v.erase(unique(ALL(v)), v.end());
}
template <typename T>
vector<int> zip(vector<T> b) {
pair<T, int> p[b.size() + 10];
int a = b.size();
vector<int> l(a);
for (int i = 0; i < a; i++) p[i] = mp(b[i], i);
sort(p, p + a);
int w = 0;
for (int i = 0; i < a; i++) {
if (i && p[i].first != p[i - 1].first) w++;
l[p[i].second] = w;
}
return l;
}
template <typename T>
vector<T> vis(vector<T> &v) {
vector<T> S(v.size() + 1);
rep(i, 1, S.size()) S[i] += v[i - 1] + S[i - 1];
return S;
}
ll dem(ll a, ll b) { return ((a + b - 1) / (b)); }
ll dtoll(double d, int g) { return round(d * pow(10, g)); }
string tobin(ll n, ll d) {
string ret;
rep(i, 0, d) {
ret += (n % 2) ? '1' : '0';
n /= 2;
}
reverse(ALL(ret));
return ret;
}
const double EPS = 1e-10;
void init() {
cin.tie(0);
cout.tie(0);
ios::sync_with_stdio(0);
cout << fixed << setprecision(12);
}
// do {} while (next_permutation(ALL(vec)));
/********************************** START **********************************/
void sol();
int main() {
init();
int q = 1;
// cin >> q;
while (q--) sol();
return 0;
}
/********************************** SOLVE **********************************/
void sol() {
int n;
cin >> n;
if (n % 2 == 0) {
int nw = 0;
while (1) {
cout << "? " << nw << ' ' << nw << endl;
fflush(stdout);
int ne;
cin >> ne;
if (ne == nw) {
cout << "! " << nw << endl;
return;
}
nw = ne;
}
return;
}
Vi ok(n);
int ct = n / 2;
int i = 0;
while (ct--) {
while (ok[i]) i++;
cout << "? " << i << ' ' << i << endl;
fflush(stdout);
int nw;
cin >> nw;
if (nw == i) {
cout << "! ";
cout << nw << endl;
return;
}
ok[i] = 1;
ok[nw] = 1;
}
rep(i, 0, n) if (ok[i] == 0) {
cout << "! " << i << endl;
return;
}
}
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