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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 |
---|---|---|---|---|---|---|---|---|---|
#645307 | #8285. Shell Sort | OIer_kzc# | WA | 0ms | 1644kb | C++20 | 1.9kb | 2024-10-16 17:39:11 | 2024-10-16 17:39:13 |
Judging History
answer
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include <cmath>
#include <vector>
#define LOG(FMT...) fprintf(stderr, FMT)
#define eb emplace_back
using namespace std;
typedef long long LL;
constexpr int N = 16, NS = 2097152, mod = 1e9 + 7;
int n, m, d[N], pr[N], c[N];
void Add(int &x, int y) {
if ((x += y) >= mod) {
x -= mod;
}
}
struct Pair {
int x, y;
void operator += (const Pair &t) {
if (x < t.x) {
x = t.x, y = t.y;
} else if (x == t.x) {
Add(y, t.y);
}
}
} f[NS];
int sz;
int ns;
int xs[N], szx;
int cost(int k) {
static char v[32];
for (int i = 0; i < sz; ++i) {
for (int j = 0; j < xs[i]; ++j) {
v[j * sz + i] = -1;
}
for (int j = xs[i]; j < c[i]; ++j) {
v[j * sz + i] = 1;
}
}
/* for (int i = 0; i < n; ++i) {
LOG("%d ", v[i]);
}
LOG("\n"); */
v[xs[k] * sz + k] = 0;
int ret = 0;
for (int i = 1; i < m; ++i) {
int D = d[i];
for (int r = 0; r < D; ++r) {
for (int x = r; x < n; x += D) {
for (int y = x; y >= D && v[y] < v[y - D]; --y) {
ret += (v[y] == 0);
swap(v[y], v[y - D]);
}
}
}
}
return ret;
}
int main() {
scanf("%d%d", &n, &m);
for (int i = 0; i < m; ++i) {
scanf("%d", d + i);
}
sz = d[0];
int extra = 0;
pr[0] = 1;
for (int i = 0; i < sz; ++i) {
c[i] = n / sz + (i < n % sz);
extra += c[i] * (c[i] - 1) / 2;
pr[i + 1] = pr[i] * (1 + c[i]);
}
ns = pr[sz];
for (int i = 1; i < ns; ++i) {
f[i].x = -1, f[i].y = 0;
}
f[0] = (Pair){0, 1};
for (int i = 0; i < ns; ++i) {
if (f[i].x < 0) {
continue;
}
for (int j = 0; j < sz; ++j) {
xs[j] = i % pr[j + 1] / pr[j];
}
for (int j = 0; j < sz; ++j) {
int x = xs[j];
if (x == c[j]) {
continue;
}
Pair t = f[i];
t.x += cost(j);
f[i + pr[j]] += t;
}
}
int res1 = extra + f[ns - 1].x;
int res2 = f[ns - 1].y;
printf("%d %d\n", res1, res2);
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 0ms
memory: 1644kb
input:
2 2 2 1
output:
1 1
result:
ok 2 number(s): "1 1"
Test #2:
score: 0
Accepted
time: 0ms
memory: 1536kb
input:
5 4 5 4 2 1
output:
6 4
result:
ok 2 number(s): "6 4"
Test #3:
score: -100
Wrong Answer
time: 0ms
memory: 1616kb
input:
8 4 6 3 2 1
output:
16 4
result:
wrong answer 1st numbers differ - expected: '15', found: '16'