結果
問題 | No.822 Bitwise AND |
ユーザー | nomi |
提出日時 | 2019-04-26 23:13:38 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,685 bytes |
コンパイル時間 | 1,548 ms |
コンパイル使用メモリ | 174,160 KB |
実行使用メモリ | 31,980 KB |
最終ジャッジ日時 | 2024-11-25 06:50:55 |
合計ジャッジ時間 | 3,731 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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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 | 186 ms
17,536 KB |
testcase_01 | AC | 41 ms
10,368 KB |
testcase_02 | AC | 244 ms
31,852 KB |
testcase_03 | AC | 246 ms
31,864 KB |
testcase_04 | AC | 6 ms
6,816 KB |
testcase_05 | AC | 4 ms
6,816 KB |
testcase_06 | AC | 4 ms
6,820 KB |
testcase_07 | AC | 5 ms
6,816 KB |
testcase_08 | AC | 4 ms
6,816 KB |
testcase_09 | AC | 4 ms
6,820 KB |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | AC | 5 ms
6,820 KB |
testcase_13 | AC | 7 ms
6,820 KB |
testcase_14 | WA | - |
testcase_15 | AC | 4 ms
6,820 KB |
testcase_16 | AC | 121 ms
17,536 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; #define int long long #define vvi vector<vector<int>> #define vec vector #define pq priority_queue #define all(v) (v).begin(), (v).end() #define uniqueV(x) sort(x.begin(), x.end()); x.erase(unique(x.begin(), x.end()), x.end()); #define rep(i, n) for (int (i) = (0); (i) < (n); ++(i)) #define repp(i, m, n) for (int (i) = (m); (i) < (n); ++(i)) #define dbg(x) cerr << #x << ": " << x << endl; #define dbg2(x, y) cerr<<"("<<#x<<", "<<#y<<") = "<<"("<<x<<", "<<y<<")"<<endl; #define dbg3(x, y, z) cerr<<"("<<#x<<", "<<#y<<", "<<#z<<") = "<<"("<<x<<", "<<y<<", "<<z<<")"<<endl; #define dbgB(value, size) cerr<<#value<<": "<<bitset<size>(value) << endl; #define line() cerr << "---------------" << endl; const int dx[] = {1, -1, 0, 0}; const int dy[] = {0, 0, -1, 1}; const double PI = 3.14159265358979323846; template<class T>bool chmax(T &a, const T &b) { if (a<b) { a = b; return 1; } return 0; } template<class T>bool chmin(T &a, const T &b) { if (b<a) { a = b; return 1; } return 0; } template<typename T> void print1(T begin, T end) { while (begin != end) { cout << (*begin) << " "; *begin++; } cout << endl; } template<typename T> void print2(T Array, int height, int width) { for (int i = 0; i < height; i++) { for (int j = 0; j < width; j++) { cout << " " << Array[i][j]; } cout << endl; } } void print() { std::cerr << endl; } template <class Head, class... Tail> void print(Head&& head, Tail&&... tail) { std::cerr << head << " "; print(std::forward<Tail>(tail)...); } template<class T> void Add(T &a, const T &b, const T &mod=1000000007) { int val = ((a % mod) + (b % mod)) % mod; if (val < 0) { val += mod; } a = val; } template <typename X, typename T> auto vectors(X x, T a) { return vector<T>(x, a); } template <typename X, typename Y, typename Z, typename... Zs> auto vectors(X x, Y y, Z z, Zs... zs) { auto cont = vectors(y, z, zs...); return vector<decltype(cont)>(x, cont); } // ------------------------------------------------------------------------------------------ int n, k; int ans = 0; bool check(int x, int y) { return (x <= y) and (y - x <= k) and ((x & y) == n); } /* void dfs(int turn, int x, int y) { if (y - x > k) return; if ((1ll << turn) > (1ll << n)) { if (check(x, y)) { // dbg2(x, y) ans++; } return; } if ((1ll << turn) & n) { if (y - x <= k) dfs(turn+1, x | (1ll << turn), y | (1ll << turn)); } else { if (y - x <= k) dfs(turn+1, x, y); if (y - x <= k) dfs(turn+1, x | (1ll << turn), y); if (y - x <= k) dfs(turn+1, x, y | (1ll << turn)); } } */ set<int> cand; void dfs(int turn, int val) { if (turn > 18) { if ((val & n) == n) cand.insert(val); return; } dfs(turn+1, val); dfs(turn+1, val | (1ll << turn)); } signed main() { cin >> n >> k; dfs(0, 0); int lim = 0; while (1) { if ((1ll << lim) > n) { break; } lim++; } vector<int> v(cand.size()); int cnt = 0; for (int val : cand) { v[cnt++] = val; // if (val < (1<<lim) - 1) { // dbg(val) // } } int ans2 = 0; int v1 = -2, v2 = -1; rep (i, v.size()) { repp (j, i, v.size()) { if (v[j] - v[i] > k) break; if (check(v[i], v[j])) { ans2++; if (v1 == -2) { v1 = -1; continue; } if (v1 == -1) { v1 = v[j] - v[i]; continue; } if (v1 >= 0 and v2 == -1) { v2 = v[j] - v[i]; continue; } } } } // dbg2(v1, v2) if (v1 == v2 and ans2 >= 10) { puts("INF"); return 0; } cout << ans2 << endl; return 0; }