結果
| 問題 |
No.2428 Returning Shuffle
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2023-09-28 15:59:48 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 261 ms / 2,000 ms |
| コード長 | 1,960 bytes |
| コンパイル時間 | 2,158 ms |
| コンパイル使用メモリ | 202,324 KB |
| 最終ジャッジ日時 | 2025-02-17 02:47:48 |
|
ジャッジサーバーID (参考情報) |
judge5 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 23 |
コンパイルメッセージ
main.cpp: In function ‘int main()’:
main.cpp:93:16: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 2 has type ‘i64’ {aka ‘long int’} [-Wformat=]
93 | printf("%lld\n", ans);
| ~~~^ ~~~
| | |
| | i64 {aka long int}
| long long int
| %ld
main.cpp:26:10: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
26 | scanf("%d%d", &n, &m);
| ~~~~~^~~~~~~~~~~~~~~~
main.cpp:33:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
33 | scanf("%d", &t);
| ~~~~~^~~~~~~~~~
main.cpp:36:32: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
36 | for (auto& v : s) scanf("%d", &v), --v;
| ~~~~~^~~~~~~~~~
ソースコード
#include <bits/stdc++.h>
using namespace std::literals::string_literals;
using i64 = std::int_fast64_t;
using std::cerr;
using std::cin;
using std::cout;
using std::endl;
#if defined(DONLINE_JUDGE)
#define NDEBUG
#elif defined(ONLINE_JUDGE)
#define NDEBUG
#endif
template <typename T>
std::vector<T> make_v(size_t a) {
return std::vector<T>(a);
}
template <typename T, typename... Ts>
auto make_v(size_t a, Ts... ts) {
return std::vector<decltype(make_v<T>(ts...))>(a, make_v<T>(ts...));
}
int main() {
int n, m;
scanf("%d%d", &n, &m);
std::vector<int> p(n);
std::iota(p.begin(), p.end(), 0);
for (int i = 0; i < m; ++i) {
int t;
scanf("%d", &t);
std::vector<int> s(t);
for (auto& v : s) scanf("%d", &v), --v;
const int o = p[s.back()];
for (int j = t - 1; j > 0; --j) {
p[s[j]] = p[s[j - 1]];
}
p[s.front()] = o;
}
std::vector<int> minp(n + 1, -1);
for (int p = 2; p <= n; ++p) {
if (minp[p] != -1) continue;
for (int i = p; i <= n; i += p) {
if (minp[i] != -1) continue;
minp[i] = p;
}
}
std::map<int, int> lcm;
std::vector<int> used(n);
for (int i = 0; i < n; ++i) {
if (used[i]) continue;
used[i] = 1;
int size = 1;
{
int now = p[i];
while (now != i) {
++size;
used[now] = 1;
now = p[now];
}
}
while (size != 1) {
const int p = minp[size];
int cnt = 0;
while (size % p == 0) {
++cnt;
size /= p;
}
lcm[p] = std::max(lcm[p], cnt);
}
}
const int MOD = 998244353;
i64 ans = 1;
for (auto [p, cnt] : lcm) {
for (int i = 0; i < cnt; ++i) ans = ans * p % MOD;
}
printf("%lld\n", ans);
return 0;
}