結果

問題 No.1082 XORのXOR
ユーザー phocomphocom
提出日時 2020-06-19 21:27:23
言語 C++14
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 4 ms / 2,000 ms
コード長 6,833 bytes
コンパイル時間 1,267 ms
コンパイル使用メモリ 116,376 KB
実行使用メモリ 6,944 KB
最終ジャッジ日時 2024-07-03 13:50:06
合計ジャッジ時間 2,211 ms
ジャッジサーバーID
(参考情報)
judge2 / judge1
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 1 ms
6,816 KB
testcase_01 AC 1 ms
6,940 KB
testcase_02 AC 2 ms
6,944 KB
testcase_03 AC 4 ms
6,944 KB
testcase_04 AC 4 ms
6,940 KB
testcase_05 AC 3 ms
6,940 KB
testcase_06 AC 3 ms
6,940 KB
testcase_07 AC 3 ms
6,940 KB
testcase_08 AC 3 ms
6,944 KB
testcase_09 AC 4 ms
6,940 KB
testcase_10 AC 3 ms
6,944 KB
testcase_11 AC 3 ms
6,940 KB
testcase_12 AC 3 ms
6,940 KB
testcase_13 AC 3 ms
6,940 KB
testcase_14 AC 4 ms
6,940 KB
testcase_15 AC 4 ms
6,940 KB
testcase_16 AC 3 ms
6,944 KB
testcase_17 AC 3 ms
6,944 KB
testcase_18 AC 3 ms
6,940 KB
testcase_19 AC 3 ms
6,940 KB
testcase_20 AC 3 ms
6,940 KB
testcase_21 AC 4 ms
6,940 KB
testcase_22 AC 3 ms
6,944 KB
testcase_23 AC 4 ms
6,944 KB
testcase_24 AC 3 ms
6,940 KB
testcase_25 AC 3 ms
6,940 KB
testcase_26 AC 3 ms
6,944 KB
testcase_27 AC 3 ms
6,944 KB
testcase_28 AC 2 ms
6,940 KB
testcase_29 AC 1 ms
6,940 KB
testcase_30 AC 2 ms
6,944 KB
testcase_31 AC 2 ms
6,940 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 <iostream>
#include <vector>
#include <set>
#include <unordered_set>
#include <map>
#include <unordered_map>
#include <cstdio>
#include <bitset>
#include <queue>
#include <deque>
#include <algorithm>
#include <numeric>
#include <cassert>
#include <functional>
#include <stack>
#include <cmath>
#include <string>
using namespace std;
#define REP(i, N) for (int i = 0; i < (int)N; i++)
#define FOR(i, a, b) for (int i = a; i < (int)b; i++)
#define ALL(x) (x).begin(), (x).end()
#define INF (1 << 30)
#define LLINF (1LL << 62)
#define DEBUG(...) debug(__LINE__, ":" __VA_ARGS__)
constexpr int MOD = 1000000007;
using ll = long long;
using Pii = pair<int, int>;
using Pll = pair<ll, ll>;
inline int popcount(ll x) { return __builtin_popcountll(x); }
inline int div2num(ll x) { return __builtin_ctzll(x); }
inline bool bit(ll x, int b) { return (x >> b) & 1; }
template <class T>
string to_string(T s);
template <class S, class T>
string to_string(pair<S, T> p);
string to_string(string s) { return s; }
string to_string(const char s[]) { return to_string(string(s)); }
template <class T>
string to_string(T v) {
if (v.empty()) return "{}";
string ret = "{";
for (auto x : v) ret += to_string(x) + ",";
ret.back() = '}';
return ret;
}
template <class S, class T>
string to_string(pair<S, T> p) {
return "{" + to_string(p.first) + ":" + to_string(p.second) + "}";
}
void debug() { cerr << endl; }
template <class Head, class... Tail>
void debug(Head head, Tail... tail) {
cerr << to_string(head) << " ";
debug(tail...);
}
struct IO {
#ifdef _WIN32
inline char getchar_unlocked() { return getchar(); }
inline void putchar_unlocked(char c) { putchar(c); }
#endif
std::string separator = " ";
template <class T>
inline void read(T& x) {
char c;
do {
c = getchar_unlocked();
} while (c != '-' && (c < '0' || '9' < c));
bool minus = 0;
if (c == '-') {
minus = 1;
c = getchar_unlocked();
}
x = 0;
while ('0' <= c && c <= '9') {
x *= 10;
x += c - '0';
c = getchar_unlocked();
}
if (minus) x = -x;
}
inline void read(std::string& x) {
char c;
do {
c = getchar_unlocked();
} while (c == ' ' || c == '\n');
x.clear();
do {
x += c;
c = getchar_unlocked();
} while (c != ' ' && c != '\n' && c != EOF);
}
template <class T>
inline void read(std::vector<T>& v) {
for (auto& x : v) read(x);
}
template <class S, class T>
inline void read(std::pair<S, T>& p) {
read(p.first);
read(p.second);
}
template <class Head, class... Tail>
inline void read(Head& head, Tail&... tail) {
read(head);
read(tail...);
}
template <class T>
inline void write(T x) {
char buf[32];
int p = 0;
if (x < 0) {
x = -x;
putchar_unlocked('-');
}
if (x == 0) putchar_unlocked('0');
while (x > 0) {
buf[p++] = (x % 10) + '0';
x /= 10;
}
while (p) {
putchar_unlocked(buf[--p]);
}
}
inline void write(std::string x) {
for (char c : x) putchar_unlocked(c);
}
inline void write(const char s[]) {
for (int i = 0; s[i] != 0; ++i) putchar_unlocked(s[i]);
}
template <class T>
inline void write(std::vector<T> v) {
if (v.empty()) return;
for (auto itr = v.begin(); itr + 1 != v.end(); ++itr) {
write(*itr);
write(separator);
}
write(v.back());
}
template <class Head, class... Tail>
inline void write(Head head, Tail... tail) {
write(head);
write(separator);
write(tail...);
}
template <class Head, class... Tail>
inline void writeln(Head head, Tail... tail) {
write(head, tail...);
write("\n");
}
void set_separator(std::string s) { separator = s; }
} io;
struct Prime {
int n;
vector<int> table;
vector<int> primes;
Prime(int _n = 100000) {
n = _n + 1;
table.resize(n, -1);
table[0] = 0;
table[1] = -1;
for (int i = 2; i * i < n; ++i) {
if (table[i] == -1) {
for (int j = i * i; j < n; j += i) {
table[j] = i;
}
}
}
}
void enumerate_primes() {
primes.clear();
for (int i = 2; i < n; ++i) {
if (table[i] == -1) primes.push_back(i);
}
}
vector<pair<long long, int>> prime_factor(long long x) {
map<long long, int> mp;
long long div = 2;
int p = 0;
while (n <= x && div * div <= x) {
if (x % div == 0) {
mp[div]++;
x /= div;
} else {
if (p + 1 < primes.size()) {
div = primes[++p];
} else {
div++;
}
}
}
if (x < n) {
while (table[x] != -1) {
mp[table[x]]++;
x /= table[x];
}
}
if (x > 1) mp[x]++;
vector<pair<long long, int>> ret;
for (auto p : mp) ret.push_back(p);
return ret;
}
};
template <int MOD = 1000000007>
struct Math {
vector<long long> fact, factinv, inv;
Math(int n = 100000) {
fact.resize(n + 1);
factinv.resize(n + 1);
inv.resize(n + 1);
fact[0] = fact[1] = 1;
factinv[0] = factinv[1] = 1;
inv[1] = 1;
for (int i = 2; i <= n; ++i) {
fact[i] = fact[i - 1] * i % MOD;
inv[i] = MOD - inv[MOD % i] * (MOD / i) % MOD;
factinv[i] = factinv[i - 1] * inv[i] % MOD;
}
}
long long C(int n, int r) {
if (n < r || n < 0 || r < 0) {
return 0;
} else {
return fact[n] * (factinv[r] * factinv[n - r] % MOD) % MOD;
}
}
long long P(int n, int r) {
if (n < r || n < 0 || r < 0) {
return 0;
} else {
return fact[n] * factinv[n - r] % MOD;
}
}
long long H(int n, int r) { return C(n + r - 1, r); }
};
struct UnionFind {
vector<int> data;
vector<vector<int>> groups;
UnionFind(int n) : data(n, -1) {}
int root(int v) { return data[v] < 0 ? v : data[v] = root(data[v]); }
bool unite(int u, int v) {
if ((u = root(u)) == (v = root(v))) {
return 1;
} else {
if (-data[u] < -data[v]) swap(u, v);
data[u] += data[v];
data[v] = u;
return 0;
}
}
int size(int v) { return -data[root(v)]; }
void make_groups() {
map<int, vector<int>> mp;
for (int i = 0; i < data.size(); ++i) mp[root(i)].push_back(i);
groups.clear();
for (auto p : mp) groups.push_back(p.second);
}
};
namespace phc {
long long modpow(long long a, long long n) {
long long res = 1;
while (n > 0) {
if (n & 1) res = res * a % MOD;
a = a * a % MOD;
n >>= 1;
}
return res;
}
long long gcd(long long a, long long b) { return b != 0 ? gcd(b, a % b) : a; }
long long lcm(long long a, long long b) { return a * b / gcd(a, b); }
} // namespace phc
int main() {
int N;
io.read(N);
vector<ll> A(N);
io.read(A);
ll ans = 0;
REP(i, N) FOR(j, i + 1, N) ans = max(ans, A[i] ^ A[j]);
io.writeln(ans);
return 0;
}
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