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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#343766 | #1817. AND Permutation | LaStataleBlue | WA | 2ms | 4056kb | C++23 | 3.5kb | 2024-03-03 01:07:28 | 2024-03-03 01:07:28 |
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];
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;
}
if(loop1!=-1 && loop0==-1)dfs(dfs,loop1,1);
for (auto i: v1)if (sol1[i] != i)dfs(dfs, i, 1);
if (loop0 != -1 && loop1 != -1) {
assert((loop0^(1<<pos))==loop1);
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];
assert(a!=b);
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;
int cont=0;
for(auto [i,j] : res)if(i==j)cont++;
assert(cont<=1);
return res;
};
auto sol = solve(solve, 59, a);
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;
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 3728kb
input:
6 0 1 4 5 2 6
output:
4 6 0 2 5 1
result:
ok OK!
Test #2:
score: -100
Wrong Answer
time: 2ms
memory: 4056kb
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...
output:
196 309 129 248 116 22 210 238 131 55 310 122 114 90 199 209 318 384 137 135 194 337 307 285 4 141 267 3 390 218 256 190 151 280 149 98 112 47 281 287 288 283 224 142 277 87 35 305 182 292 174 144 160 66 206 261 49 46 314 20 290 226 82 138 138 152 242 386 321 132 316 215 204 70 303 304 257 39 11 236...
result:
wrong answer Bit and of corresponding values not zero.