#521998 (C++17) No.1142 XOR と XOR

• 問題: No.1142 XOR と XOR
• ユーザー: Series_205
• 提出日時: 2020-07-31 22:09:44
• 言語: C++17 (gcc 13.3.0 + boost 1.87.0)
• 結果: AC
• 実行時間: 1,164 ms / 2,000 ms
• コード長: 3,158 bytes
• コンパイル時間: 2,074 ms
• コンパイル使用メモリ: 194,660 KB
• 最終ジャッジ日時: 2025-01-12 10:21:34
• ジャッジサーバーID （参考情報）: judge3 / judge3

ファイルパターン	結果
sample	AC * 3
other	AC * 25

ソースコード

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#include <bits/stdc++.h>
#define FOR(i, a, n) for(ll i = (ll)a; i < (ll)n; i++)
#define FORR(i, n) for(ll i = (ll)n - 1LL; i >= 0LL; i--)
#define rep(i, n) FOR(i, 0, n)
#define ALL(x) begin(x), end(x)
using namespace std;
using ll = long long;
constexpr ll Mod = 998244353;
constexpr ll mod = 1e9 + 7;
constexpr ll inf = 1LL << 60;
const double PI = acos(-1);
template <typename T1, typename T2> inline bool chmax(T1 &a, T2 b) {
    return a < b && (a = b, true);
}
template <typename T1, typename T2> inline bool chmin(T1 &a, T2 b) {
    return a > b && (a = b, true);
}
/*-------------------------------------------*/
template <int M> class ModInt {
    int x;
  public:
    constexpr ModInt() : x(0) {}
    constexpr ModInt(int64_t y) : x(y >= 0 ? y % M : (M - (-y) % M) % M) {}
    constexpr ModInt &operator+=(const ModInt p) {
        if((x += p.x) >= M) x -= M;
        return *this;
    }
    constexpr ModInt &operator-=(const ModInt p) {
        if((x += M - p.x) >= M) x -= M;
        return *this;
    }
    constexpr ModInt &operator*=(const ModInt p) {
        x = (int)(1LL * x * p.x % M);
        return *this;
    }
    constexpr ModInt &operator/=(const ModInt p) {
        *this *= p.inverse();
        return *this;
    }
    constexpr ModInt operator-() const { return ModInt(-x); }
    constexpr ModInt operator+(const ModInt p) const {
        return ModInt(*this) += p;
    }
    constexpr ModInt operator-(const ModInt p) const {
        return ModInt(*this) -= p;
    }
    constexpr ModInt operator*(const ModInt p) const {
        return ModInt(*this) *= p;
    }
    constexpr ModInt operator/(const ModInt p) const {
        return ModInt(*this) /= p;
    }
    constexpr bool operator==(const ModInt p) const { return x == p.x; }
    constexpr bool operator!=(const ModInt p) const { return x != p.x; }
    constexpr ModInt inverse() const {
        int a = x, b = M, u = 1, v = 0, t = 0;
        while(b > 0) {
            t = a / b;
            swap(a -= t * b, b);
            swap(u -= t * v, v);
        }
        return ModInt(u);
    }
    constexpr ModInt pow(int64_t k) const {
        ModInt ret(1), mul(x);
        while(k > 0) {
            if(k & 1) ret *= mul;
            mul *= mul;
            k >>= 1;
        }
        return ret;
    }
    constexpr friend ostream &operator<<(ostream &os, const ModInt &p) {
        return os << p.x;
    }
    constexpr friend istream &operator>>(istream &is, ModInt &a) {
        int64_t t = 0;
        is >> t;
        a = ModInt(t);
        return (is);
    }
};
using mint = ModInt<mod>;
int n, m, k;
int va[1024], vb[1024];
mint cnta[1024], cntb[1024];
int main() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    cin >> n >> m >> k;
    int a = 0;
    va[0] = vb[0] = 1;
    rep(i, n) {
        int x;
        cin >> x;
        a ^= x;
        rep(j, 1024) cnta[j] += va[a ^ j];
        va[a]++;
    }
    a = 0;
    rep(i, m) {
        int x;
        cin >> x;
        a ^= x;
        rep(j, 1024) cntb[j] += vb[a ^ j];
        vb[a]++;
    }
    mint ans;
    rep(i, 1024) ans += cnta[i] * cntb[k ^ i];
    cout << ans << endl;
    return 0;
}
 
 
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