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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#151644#4810. Add OneHaccerKatWA 2ms3792kbC++204.5kb2023-08-27 12:24:172023-08-27 12:24:18

Judging History

你现在查看的是最新测评结果

  • [2023-08-27 12:24:18]
  • 评测
  • 测评结果:WA
  • 用时:2ms
  • 内存:3792kb
  • [2023-08-27 12:24:17]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;
template<typename T>
int SIZE(T (&t)){
    return t.size();
}

template<typename T, size_t N>
int SIZE(T (&t)[N]){
    return N;
}

string to_string(char t){
    return "'" + string({t}) + "'";
}

string to_string(bool t){
    return t ? "true" : "false";
}

string to_string(const string &t, int x1=0, int x2=1e9){
    string ret = "";
    for(int i = min(x1,SIZE(t)), _i = min(x2,SIZE(t)-1); i <= _i; ++i){
        ret += t[i];
    }
    return '"' + ret + '"';
}

string to_string(const char* t){
    string ret(t);
    return to_string(ret);
}

template<size_t N>
string to_string(const bitset<N> &t, int x1=0, int x2=1e9){
    string ret = "";
    for(int i = min(x1,SIZE(t)); i <= min(x2,SIZE(t)-1); ++i){
        ret += t[i] + '0';
    }
    return to_string(ret);
}

template<typename T, typename... Coords>
string to_string(const T (&t), int x1=0, int x2=1e9, Coords... C);

template<typename T, typename S>
string to_string(const pair<T, S> &t){
    return "(" + to_string(t.first) + ", " + to_string(t.second) + ")";
}

template<typename T, typename... Coords>
string to_string(const T (&t), int x1, int x2, Coords... C){
    string ret = "[";
    x1 = min(x1, SIZE(t));
    auto e = begin(t);
    advance(e,x1);
    for(int i = x1, _i = min(x2,SIZE(t)-1); i <= _i; ++i){
        ret += to_string(*e, C...) + (i != _i ? ", " : "");
        e = next(e);
    }
    return ret + "]";
}

template<int Index, typename... Ts>
struct print_tuple{
    string operator() (const tuple<Ts...>& t) {
        string ret = print_tuple<Index - 1, Ts...>{}(t);
        ret += (Index ? ", " : "");
        return ret + to_string(get<Index>(t));
    }
};

template<typename... Ts>
struct print_tuple<0, Ts...> {
    string operator() (const tuple<Ts...>& t) {
        return to_string(get<0>(t));
    }
};

template<typename... Ts>
string to_string(const tuple<Ts...>& t) {
    const auto Size = tuple_size<tuple<Ts...>>::value;
    return print_tuple<Size - 1, Ts...>{}(t);
}

void dbgr(){;}
template<typename Heads, typename... Tails>
void dbgr(Heads H, Tails... T){
    cout << to_string(H) << " | ";
    dbgr(T...);
}

void dbgs(){;}
template<typename Heads, typename... Tails>
void dbgs(Heads H, Tails... T){
    cout << H << " ";
    dbgs(T...);
}

/*
formatted functions:
*/

/*
consider __VA_ARGS__ as a whole:
dbgv() prints values only
dbg() prints name and values
*/
#define dbgv(...) cout << to_string(__VA_ARGS__) << endl;

#define dbg(...) cout << "[" << #__VA_ARGS__ << "]: "; dbgv(__VA_ARGS__);
//#define dbg(...)

/*
consider __VA_ARGS__ as a sequence of arguments:
dbgr() prints values only
dbgm() prints names and values
*/
#define dbgr(...) dbgr(__VA_ARGS__); cout << endl;

#define dbgm(...) cout << "[" << #__VA_ARGS__ << "]: "; dbgr(__VA_ARGS__);

struct custom_hash {
    static uint64_t splitmix64(uint64_t x) {
        // http://xorshift.di.unimi.it/splitmix64.c
        x += 0x9e3779b97f4a7c15;
        x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
        x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
        return x ^ (x >> 31);
    }

    size_t operator()(uint64_t x) const {
        static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
        return splitmix64(x + FIXED_RANDOM);
    }
};

typedef long long ll;
typedef unsigned int ui;
typedef unsigned long long ull;
typedef pair<int, int> pi;
typedef pair<ll, ll> pll;
// using u128 = __uint128_t;
// using i128 = __int128;
const int mod = 1000000007;
const int N = 1000005;
const int LOG = 20;
const int inf = 1e9;
const double eps = 1e-11;
ll basis[60], a[N];
bool add(ll x, bool onlycheck = 0) {
    for (int i = 0; i < 60; i++) {
        if (!((x >> i) & 1)) continue;
        if (!basis[i]) {
            if (!onlycheck) basis[i] = x;
            break;
        }
        
        x ^= basis[i];
    }
    
    return (x == 0);
}

int n, m, k, qq;
void solve() {
    cin >> n;
    ll xorsum = 0;
    for (int i = 0; i < n; i++) {
        cin >> a[i];
        xorsum ^= a[i];
        add(a[i]);
    }
    
    ll out = 0;
    for (int i = 0; i <= 60; i++) {
        ll x = (1LL << i) - 1;
        bool check = add(x, 1);
        if (check) {
            ll y = (1LL << i + 1) - 1;
            out = max(out, xorsum ^ y);
        }
    }
    
    cout << out << "\n";
}

int32_t main() {
    std::ios::sync_with_stdio(false);
    cin.tie(NULL);
    solve();
}

詳細信息

Test #1:

score: 100
Accepted
time: 1ms
memory: 3616kb

input:

4
1 2 1 2

output:

7

result:

ok 1 number(s): "7"

Test #2:

score: 0
Accepted
time: 2ms
memory: 3500kb

input:

5
1 2 3 4 5

output:

14

result:

ok 1 number(s): "14"

Test #3:

score: 0
Accepted
time: 2ms
memory: 3792kb

input:

6
1 2 4 7 15 31

output:

47

result:

ok 1 number(s): "47"

Test #4:

score: 0
Accepted
time: 2ms
memory: 3504kb

input:

5
41 40 50 11 36

output:

99

result:

ok 1 number(s): "99"

Test #5:

score: 0
Accepted
time: 0ms
memory: 3468kb

input:

6
10 40 60 2 44 47

output:

96

result:

ok 1 number(s): "96"

Test #6:

score: 0
Accepted
time: 2ms
memory: 3576kb

input:

6
46 25 39 47 23 60

output:

107

result:

ok 1 number(s): "107"

Test #7:

score: -100
Wrong Answer
time: 1ms
memory: 3504kb

input:

6
56 90 61 63 56 23

output:

78

result:

wrong answer 1st numbers differ - expected: '112', found: '78'