Submission #858221

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
858221	2023-10-07 16:13:00	thangdz2k7	NoM (RMI21_nom)	C++17	34 / 100	730 ms	69496 KiB

Main

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#include <bits/stdc++.h>
#define int long long
#define ii pair <int, int>
#define F first
#define S second
using namespace std;
const int mod = 1e9 + 7;
const int N = 4e3 + 5;
void add(int &a, int b){
    a += b;
    if (a >= mod) a -= mod;
    if (a < 0) a += mod;
}
int mu(int a, int b){
    if (b == 0) return 1;
    if (b % 2 == 1) return 1ll * mu(a, b - 1) * a % mod;
    int c = mu(a, b / 2);
    return 1ll * c * c % mod;
}
int dp[N][N], C[N][N];
int n, m;
int gt[N], re_2[N];
int c(int b, int a){
    return 1ll * (1ll * gt[a] * mu(gt[b], mod - 2) % mod) * mu(gt[a - b], mod - 2) % mod;
 
 
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• Subtask 1: 9 / 9
• Subtask 2: 12 / 12
• Subtask 3: 13 / 13
• Subtask 4: 0 / 18
• Subtask 5: 0 / 48