結果
問題 | No.1863 Xor Sum 2...? |
ユーザー |
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提出日時 | 2022-03-04 22:00:58 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 46 ms / 2,000 ms |
コード長 | 3,205 bytes |
コンパイル時間 | 1,468 ms |
コンパイル使用メモリ | 118,856 KB |
最終ジャッジ日時 | 2025-01-28 05:18:31 |
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 28 |
ソースコード
// ===== template.hpp =====#include <algorithm>#include <array>#include <bitset>#include <cassert>#include <cmath>#include <iomanip>#include <iostream>#include <map>#include <numeric>#include <queue>#include <set>#include <stack>#include <string>#include <tuple>#include <unordered_map>#include <unordered_set>#include <utility>#include <vector>#define OVERRIDE(a, b, c, d, ...) d#define REP2(i, n) for (i32 i = 0; i < (i32) (n); ++i)#define REP3(i, m, n) for (i32 i = (i32) (m); i < (i32) (n); ++i)#define REP(...) OVERRIDE(__VA_ARGS__, REP3, REP2)(__VA_ARGS__)#define PER(i, n) for (i32 i = (i32) (n) - 1; i >= 0; --i)#define ALL(x) begin(x), end(x)using namespace std;using u32 = unsigned int;using u64 = unsigned long long;using u128 = __uint128_t;using i32 = signed int;using i64 = signed long long;using i128 = __int128_t;template <typename T>using Vec = vector<T>;template <typename T>bool chmin(T &x, const T &y) {if (x > y) {x = y;return true;}return false;}template <typename T>bool chmax(T &x, const T &y) {if (x < y) {x = y;return true;}return false;}[[maybe_unused]] constexpr i32 inf = 1000000100;[[maybe_unused]] constexpr i64 inf64 = 3000000000000000100;struct SetIO {SetIO() {ios::sync_with_stdio(false);cin.tie(nullptr);cout << fixed << setprecision(10);}} set_io;// ===== template.hpp =====#ifdef DEBUGF#include "../new_library/other/debug.hpp"#else#define DBG(x) (void) 0#endifint main() {i32 n;cin >> n;Vec<i64> a(n), b(n);REP(i, n) {cin >> a[i];}REP(i, n) {cin >> b[i];}Vec<i64> asum(n + 1, 0);REP(i, n) {asum[i + 1] = asum[i] + a[i];}Vec<i64> axor(n + 1, 0);REP(i, n) {axor[i + 1] = axor[i] ^ a[i];}Vec<i64> bxor(n + 1, 0);REP(i, n) {bxor[i + 1] = bxor[i] ^ b[i];}Vec<i64> bxorsum(n + 2, 0);REP(i, n + 1) {bxorsum[i + 1] = bxorsum[i] + bxor[i];}auto range_b_count = [&](i64 x, i32 l, i32 r) -> i64 {if (x == 1) {return bxorsum[r] - bxorsum[l];} else {return r - l - (bxorsum[r] - bxorsum[l]);}};i64 ans = 0;REP(i, n) {// max r s.t. sum([l, r)) - xor([l, r)) = 0i32 ok = i, ng = n + 1;while (ng - ok > 1) {i32 mid = (ok + ng) / 2;if (asum[mid] - asum[i] == (axor[mid] ^ axor[i])) {ok = mid;} else {ng = mid;}}i32 max_r0 = ok;// max r s.t. sum([l, r)) - xor([l, r)) = 1ng = n + 1;while (ng - ok > 1) {i32 mid = (ok + ng) / 2;if (asum[mid] - asum[i] == (axor[mid] ^ axor[i]) + 1) {ok = mid;} else {ng = mid;}}i32 max_r1 = ok;DBG(max_r0);DBG(max_r1);ans += range_b_count(bxor[i], i + 1, max_r0 + 1);ans += range_b_count(!bxor[i], max_r0 + 1, max_r1 + 1);}cout << ans << '\n';}