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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#407751 | #4252. Permutation | zhaohaikun# | 0 | 93ms | 4016kb | C++20 | 2.5kb | 2024-05-09 10:39:31 | 2024-05-09 10:39:33 |
Judging History
answer
#pragma GCC optimize(2)
#pragma GCC optimize("Ofast")
#pragma GCC optimize("inline","fast-math","unroll-loops","no-stack-protector")
#pragma GCC diagnostic error "-fwhole-program"
#pragma GCC diagnostic error "-fcse-skip-blocks"
#pragma GCC diagnostic error "-funsafe-loop-optimizations"
#include "perm.h"
// MagicDark
#include <bits/stdc++.h>
#define debug cerr << "\033[32m[" << __LINE__ << "]\033[0m "
#define SZ(x) ((int) x.size() - 1)
#define all(x) x.begin(), x.end()
#define ms(x, y) memset(x, y, sizeof x)
#define F(i, x, y) for (int i = (x); i <= (y); i++)
#define DF(i, x, y) for (int i = (x); i >= (y); i--)
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
template <typename T> T& chkmax(T& x, T y) {return x = max(x, y);}
template <typename T> T& chkmin(T& x, T y) {return x = min(x, y);}
template <typename T> T& read(T &x) {
x = 0; int f = 1; char c = getchar();
for (; !isdigit(c); c = getchar()) if (c == '-') f = -f;
for (; isdigit(c); c = getchar()) x = (x << 1) + (x << 3) + (c ^ 48);
return x *= f;
}
mt19937 mrand(chrono::steady_clock::now().time_since_epoch().count());
inline int rnd(int l, int r) {return mrand() % (r - l + 1) + l;}
vector <int> solve(ll n) {
vector <int> ans;
DF(i, 60, 1) {
ll w = (1ll << i) - 1;
while (n >= w) {
for (int& j: ans) j += i;
F(j, 1, i) ans.push_back(j - 1);
n -= w;
}
}
return ans;
}
int dp[1010], t[1010], len;
void modify(int x, int y) {
x++;
for (; x <= len; x += x & -x) t[x] += y;
}
int query(int x) {
int s = 0;
for (; x; x ^= x & -x) s += t[x];
return s;
}
int calc(vector <int> x) {
len = x.size();
F(i, 1, len) t[i] = 0;
int s = 0;
F(i, 0, SZ(x)) {
dp[i] = 1 + query(x[i]);
// F(j, 0, i - 1) {
// if (x[j] < x[i]) {
// dp[i] += dp[j];
// }
// }
s += dp[i];
modify(i, dp[i]);
}
return s;
}
std::vector<int> construct_permutation(long long n) {
n--;
vector <int> ans;
// if (n <= 90) {
// F(i, 1, n) ans.push_back(n - i);
// return ans;
// }
ans = solve(n);
F(i, 1, 20) {
vector <int> t(i);
F(j, 1, i) t[j - 1] = j - 1;
// do {
F(j, 1, 100) {
shuffle(all(t), mrand);
int v = calc(t);
// debug << v << endl;
if (n >= v) {
vector <int> w = solve(n - v);
if (w.size() + i < ans.size()) {
ans.clear();
for (int j: t) ans.push_back(j + w.size());
for (int j: w) ans.push_back(j);
}
}
}
// } while (next_permutation(all(t)));
}
return ans;
}
Details
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Subtask #1:
score: 0
Wrong Answer
Test #1:
score: 0
Wrong Answer
time: 38ms
memory: 3984kb
input:
a92b3f80-b312-8377-273c-3916024d7f2a 89 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90
output:
6cad0f33-b1bd-3a3e-1a8d-c4af23adfcbf OK 1 0 2 1 0 2 0 1 3 1 2 0 3 1 0 2 4 2 3 0 1 3 0 1 2 4 1 2 3 0 4 2 0 1 3 5 2 3 4 0 1 4 0 1 3 2 5 2 1 3 4 0 5 1 4 0 3 2 5 1 0 4 3 2 4 0 1 2 3 5 1 2 3 4 0 5 0 2 4 3 1 6 2 3 4 5 0 1 5 0 2 3 1 4 6 1 4 2 3 5 0 6 0 5 4 1 2 3 6 1 5 0 2 4 3 5 0 1 2 4 3 6 1 2 3 5 4 0 6 4 ...
result:
wrong answer
Subtask #2:
score: 0
Wrong Answer
Test #2:
score: 0
Wrong Answer
time: 93ms
memory: 4016kb
input:
a92b3f80-b312-8377-273c-3916024d7f2a 100 39993 85709 48645 25391 15360 54084 28947 18808 86735 316 14357 82845 96210 16242 58466 43439 77462 70742 76176 20397 30314 22634 29622 81835 31904 81283 37072 36527 26764 55878 72762 5262 34915 63468 20595 66579 77373 36670 89340 83384 73268 31960 67318 3908...
output:
6cad0f33-b1bd-3a3e-1a8d-c4af23adfcbf OK 40 23 37 26 32 38 35 25 29 30 21 34 28 33 31 22 24 36 27 39 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 3 4 5 0 1 2 55 48 39 43 47 40 46 49 45 41 42 54 53 51 44 38 52 50 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 8 9 10 11 12 13 14 15 16 17 18 19 20 21 4 5 6...
result:
wrong answer