QOJ.ac
QOJ
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 |
---|---|---|---|---|---|---|---|---|---|
#343762 | #1817. AND Permutation | LaStataleBlue | RE | 1ms | 3604kb | C++23 | 3.4kb | 2024-03-03 00:59:14 | 2024-03-03 00:59:15 |
Judging History
answer
#include "bits/stdc++.h"
using namespace std;
typedef long long ll;
typedef long double db;
#define TESTCASE 0
static void solve([[maybe_unused]] int tc) {
int n;
cin >> n;
vector<long long> a(n);
for (int i = 0; i < n; i++)cin >> a[i];
auto tmp = a;
sort(a.begin(),a.end());
if (n == 1) {
cout << "0\n";
return;
}
auto solve = [&](auto &solve, int pos, vector<long long> v) -> map<long long, long long> {
if (v.size() == 0) {
return map<long long, long long>();
}
if (v.size() == 2) {
return map<long long, long long>{{v[0], v[1]},
{v[1], v[0]}};
}
if (v.size() == 1) {
return map<long long, long long>{{v[0], v[0]}};
}
map<long long, long long> res;
vector<long long> v0, v1;
for (auto i: v) {
if (i & (1ll << pos))v1.push_back(i);
else v0.push_back(i);
}
map<long long, long long> sol0, sol1;
sol0 = solve(solve, pos - 1, v0);
sol1 = solve(solve, pos - 1, v1);
map<long long, int> col;
auto dfs = [&](auto &dfs, long long pos, int mode) -> void {
//cout << pos << " dfs\n";
if (col.find(pos) != col.end())return;
col[pos] = mode;
dfs(dfs, sol1[pos], mode ^ 1);
if (sol0.find(pos ^ (1ll << pos)) != sol0.end())
if (sol1.find(sol0[pos ^ (1ll << pos)] ^ (1ll << pos)) != sol1.end()) {
dfs(dfs, sol0[pos ^ (1ll << pos)] ^ (1ll << pos), mode ^ 1);
}
};
int loop0 = -1, loop1 = -1;
for (auto [i, j]: sol0) {
if (i == j)loop0 = i;
}
for (auto [i, j]: sol1) {
if (i == j)loop1 = i;
}
for (auto i: v1)if (sol1[i] != i || (loop0==-1))dfs(dfs, i, 1);
if (loop0 != -1 && loop1 != -1) {
sol0[loop0] = loop1;
sol1[loop1] = loop0;
loop0 = -1;
loop1 = -1;
}
for (auto [i, j]: sol1) {
if (col[i] == 1) {
if(i==j){
int a=i^(1ll<<pos);
int b=sol0[a];
sol1[i]=b;
sol0[b]=i;
sol0[a]=a;
continue;
}
int a = i ^ (1ll << pos);
int b = sol0[a];
sol1[i] = b;
sol1[j] = a;
sol0[a] = j;
sol0[b] = i;
}
}
for (auto [i, j]: sol0)res[i] = j;
for (auto [i, j]: sol1)res[i] = j;
return res;
};
auto sol = solve(solve, 59, a);
a = tmp;
for (int i = 0; i < n; i++) {
cout << sol[a[i]] << "\n";
assert((a[i]&sol[a[i]])==0);
}
}
int main() {
//ios::sync_with_stdio(false);
if (const char *f = getenv("REDIRECT_STDOUT"); f) {
freopen(f, "w", stdout);
}
int T = 1;
#if TESTCASE
cin >> T;
#endif
for (int t = 1; t <= T; t++) {
solve(t);
}
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 1ms
memory: 3604kb
input:
6 0 1 4 5 2 6
output:
4 6 0 2 5 1
result:
ok OK!
Test #2:
score: -100
Runtime Error
input:
272 315 138 126 6 394 297 44 273 84 200 9 197 396 133 16 46 65 87 86 336 316 174 140 162 250 306 52 188 57 36 63 192 320 388 10 156 15 208 38 32 31 228 30 305 234 384 220 142 72 27 337 110 94 317 304 242 398 209 5 323 29 284 301 309 244 230 261 61 254 266 194 296 275 313 80 206 214 88 308 18 288 106...