Submission #1097182

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1097182	2024-10-06 11:48:38	raphaelp	Binaria (CCO23_day1problem1)	C++14	25 / 25	188 ms	28752 KiB

Main

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#include <bits/stdc++.h>
using namespace std;
const int MAXN = 1e6;
long long fac[MAXN + 1];
long long inv[MAXN + 1];
long long exp(long long x, long long n, long long m)
{
    x %= m;
    long long ans = 1;
    while (n > 0)
    {
        if (n % 2)
            ans = (ans * x) % m;
        n /= 2;
        x = (x * x) % m;
    }
    return ans;
}
void precalc(long long p)
{
    fac[0] = 1;
    for (int i = 1; i <= MAXN; i++)
    {
        fac[i] = (fac[i - 1] * i) % p;
    }
    inv[MAXN] = exp(fac[MAXN], p - 2, p);
    for (int i = MAXN; i >= 1; i--)
        inv[i - 1] = (inv[i] * i) % p;
}
long long choose(int n, int k, int p)
 
 
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