Submission #598539

#	Time	Username	Problem	Language	Result	Execution time	Memory
598539		Valaki2	Amusement Park (CEOI19_amusementpark)	C++14	0 / 100	1 ms	320 KiB

amusementpark

#include <bits/stdc++.h>
using namespace std;

#define ll long long

const ll mod = 998244353;

void solve() {
    ll n, m;
    cin >> n >> m;
    if(n == 1) {
        cout << "0\n";
        return;
    }
    ll ans = 1;
    for(ll i = 3; i <= n; i++) {
        ans = (ans * i) % mod;
    }
    ans = (ans * m) % mod;
    cout << ans << "\n";
}

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    solve();
    return 0;
}

• Subtask 1: 0 / 7
• Subtask 2: 0 / 12
• Subtask 3: 0 / 23
• Subtask 4: 0 / 21
• Subtask 5: 0 / 37