| 比赛 |
五一大礼包 |
评测结果 |
AATTTTTTTT |
| 题目名称 |
组一辈子乐队 |
最终得分 |
20 |
| 用户昵称 |
xuyuqing |
运行时间 |
9.201 s |
| 代码语言 |
C++ |
内存使用 |
814.51 MiB |
| 提交时间 |
2026-05-04 09:50:59 |
显示代码纯文本
#include <cstdio>
#include <iostream>
using namespace std;
const int N = 233233;
const int K = 332;
const long long Mod = 998244353;
int n;
int k;
long long nums[N][K];
long long sums[N][K];
long long magic[K][K];
long long res[K];
int main () {
freopen ("MyGo.in", "r", stdin);
freopen ("MyGo.out", "w", stdout);
cin >> n >> k;
for (int i = 1; i <= n; i++) {
cin >> nums[i][1];
nums[i][0] = 1;
sums[i][0] = (sums[i - 1][0] + nums[i][0]) % Mod;
sums[i][1] = (sums[i - 1][1] + nums[i][1]) % Mod;
}
for (int j = 2; j <= k; j++) {
for (int i = 1; i <= n; i++) {
nums[i][j] = nums[i][j - 1] * nums[i][1] % Mod;
sums[i][j] = (sums[i - 1][j] + nums[i][j]) % Mod;
}
}
magic[0][0] = 1;
for (int i = 1; i <= k; i++) {
magic[i][0] = 1;
for (int j = 1; j <= i; j++) {
magic[i][j] = (magic[i - 1][j - 1] + magic[i - 1][j]) % Mod;
}
}
for (int now = 1; now <= k; now++) {
for (int i = 1; i <= n; i++) {
for (int a = 0; a <= now; a++) {
int b = now - a;
res[now] = (res[now] + nums[i][a] * sums[i - 1][b] % Mod * magic[now][a] % Mod) % Mod;
}
}
}
for (int i = 1; i <= k; i++) {
cout << res[i] << endl;
}
return 0;
}