結果
問題 | No.2252 Find Zero |
ユーザー | kztasa |
提出日時 | 2023-03-24 21:27:22 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 63 ms / 2,000 ms |
コード長 | 5,910 bytes |
コンパイル時間 | 3,378 ms |
コンパイル使用メモリ | 234,724 KB |
実行使用メモリ | 25,580 KB |
平均クエリ数 | 78.17 |
最終ジャッジ日時 | 2024-09-18 16:44:07 |
合計ジャッジ時間 | 5,319 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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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 | 52 ms
24,556 KB |
testcase_01 | AC | 63 ms
24,940 KB |
testcase_02 | AC | 45 ms
24,812 KB |
testcase_03 | AC | 54 ms
24,812 KB |
testcase_04 | AC | 44 ms
24,940 KB |
testcase_05 | AC | 44 ms
25,196 KB |
testcase_06 | AC | 45 ms
25,196 KB |
testcase_07 | AC | 45 ms
25,196 KB |
testcase_08 | AC | 50 ms
25,220 KB |
testcase_09 | AC | 60 ms
25,220 KB |
testcase_10 | AC | 45 ms
24,940 KB |
testcase_11 | AC | 45 ms
25,580 KB |
testcase_12 | AC | 44 ms
24,812 KB |
testcase_13 | AC | 45 ms
24,812 KB |
testcase_14 | AC | 45 ms
25,452 KB |
testcase_15 | AC | 43 ms
25,580 KB |
testcase_16 | AC | 44 ms
25,196 KB |
testcase_17 | AC | 44 ms
25,196 KB |
ソースコード
#include <bits/stdc++.h> #include <atcoder/all> #define pub push_back #define eb emplace_back #define mp make_pair #define fi first #define se second #define rep(i, n) rep2(i, 0, n) #define rep2(i, m, n) for (ll i = m; i < (n); i++) #define per(i, b) per2(i, 0, b) #define per2(i, a, b) for (ll i = int(b) - 1; i >= int(a); i--) #define ALL(c) (c).begin(), (c).end() using namespace std; using namespace atcoder; using ll = long long; using dd = double; using Pll = pair<ll, ll>; using vll = vector< ll>; using vdd = vector< dd>; using vvll = vector< vll>; using vvdd = vector<vdd>; using vvvll = vector< vvll>; using vvvdd = vector<vvdd>; using vvvvll = vector<vvvll>; using vchar = vector< char>; using vvchar = vector<vchar>; using mint = modint998244353; using mint2 = modint1000000007; using vmint = vector< mint>; using vmint2 = vector< mint2>; using vvmint = vector<vmint>; using vvmint2 = vector<vmint2>; constexpr long long INF = (1LL << 60); constexpr double EPS = 1e-9; constexpr double PI = 3.141592653589; ////////////////////////////////////////////////////////// template <typename T> bool chmax(T& a, const T& b) { if (a < b) { a = b; // aをbで更新 return true; } return false; } template <typename T> bool chmin(T& a, const T& b) { if (a > b) { a = b; // aをbで更新 return true; } return false; } template <typename T> T sq(T x) { return x * x; } std::string zfill(int n, const int width) { std::stringstream ss; ss << std::setw(width) << std::setfill('0') << n; return ss.str(); } struct HLD { int n; vector<int> siz, top, dep, parent, in, out, seq; vector<vector<int>> adj; int cur; HLD(int n) { init(n); } void init(int n) { this->n = n; siz.resize(n); top.resize(n); dep.resize(n); parent.resize(n); in.resize(n); out.resize(n); seq.resize(n); cur = 0; adj.assign(n, {}); } void addEdge(int u, int v) { adj[u].push_back(v); adj[v].push_back(u); } void work(int root = 0) { top[root] = root; dep[root] = 0; parent[root] = -1; dfs1(root); dfs2(root); } void dfs1(int u) { if (parent[u] != -1) { adj[u].erase(find(adj[u].begin(), adj[u].end(), parent[u])); } siz[u] = 1; for (auto& v : adj[u]) { parent[v] = u; dep[v] = dep[u] + 1; dfs1(v); siz[u] += siz[v]; if (siz[v] > siz[adj[u][0]]) { swap(v, adj[u][0]); } } } void dfs2(int u) { in[u] = cur++; seq[in[u]] = u; for (auto v : adj[u]) { top[v] = v == adj[u][0] ? top[u] : v; dfs2(v); } out[u] = cur; } int lca(int u, int v) { while (top[u] != top[v]) { if (dep[top[u]] > dep[top[v]]) { u = parent[top[u]]; } else { v = parent[top[v]]; } } return dep[u] < dep[v] ? u : v; } int dist(int u, int v) { return dep[u] + dep[v] - 2 * dep[lca(u, v)]; } int jump(int u, int k) { if (dep[u] < k) { return -1; } int d = dep[u] - k; while (dep[top[u]] > d) { u = parent[top[u]]; } return seq[in[u] - dep[u] + d]; } bool isAncester(int u, int v) { return in[u] <= in[v] && in[v] < out[u]; } int rootedChild(int u, int v) { if (u == v) { return u; } if (!isAncester(u, v)) { return parent[u]; } auto it = std::upper_bound(adj[u].begin(), adj[u].end(), v, [&](int x, int y) { return in[x] < in[y]; }) - 1; return *it; } int rootedSize(int u, int v) { if (u == v) { return n; } if (!isAncester(v, u)) { return siz[v]; } return n - siz[rootedChild(v, u)]; } int rootedLca(int a, int b, int c) { return lca(a, b) ^ lca(b, c) ^ lca(c, a); } }; bool isp(ll num) { if (num < 2) return false; else if (num == 2) return true; else if (num % 2 == 0) return false; // 偶数はあらかじめ除く double sqrtNum = sqrt(num); for (int i = 3; i <= sqrtNum; i += 2) { if (num % i == 0) { // 素数ではない return false; } } // 素数である return true; } //N未満でNと互いに素な数の個数(オイラーのトーシェント関数) vector<ll> totient(int n) { vector<bool> prime(n + 1, true); vector<ll> ans(n + 1); for (int i = 2; i <= n; i++) { ans[i] = i; } if (n >= 0) prime[0] = false; if (n >= 1) prime[1] = false; for (int i = 2; i <= n; i++) { if (!prime[i]) { continue; } ans[i] *= i - 1; ans[i] /= i; for (int j = i + i; j <= n; j += i) { prime[j] = false; ans[j] *= i - 1; ans[j] /= i; } } return ans; } bool ispal(ll N) { string s = to_string(N); ll n = s.size(); rep(i, n) { if (s[i] != s[n - 1 - i]) { return false; } } return true; } int main() { //cout << fixed << setprecision(10); ios::sync_with_stdio(false); cin.tie(nullptr); ll N; cin >> N; ll p = N / 2; rep(i, p) { cout << '?' << " " << 2 * i << " " << 2 * i + 1 << endl; ll z; cin >> z; if (z == 2 * i ) { cout << "!" << " " << 2 * i + 1 << endl; return 0; } else if (z == 2 * i + 1) { cout << "!" << " " << 2 * i << endl; return 0; } } cout << "!" << " " << N - 1 << endl; }