Cod sursa(job #2631889)

Utilizator mjmilan11Mujdar Milan mjmilan11 Data 1 iulie 2020 14:56:20
Problema Kperm Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.68 kb
#include <bits/stdc++.h>
using namespace std;
ifstream fin("kperm.in");
ofstream fout("kperm.out");
const int MOD = 666013;
long long n,k,c,r,rasp=1,nr=1;
int main()
{
    fin >> n >> k;
    if(k%2==0){
        fout << 0;
        return 0;
    }
    c=n/k,r=n%k;
    for(int i=1;i<=c+1;i++) nr=(1LL*nr*i)%MOD;
    for(int i=1;i<=r;i++) rasp=(1LL*rasp*nr)%MOD;
    nr=1;
    for(int i=1;i<=c;i++) nr=(1LL*nr*i)%MOD;
    for(int i=1;i<=k-r;i++) rasp=(1LL*rasp*nr)%MOD;
    nr=1;
    for(int i=1;i<=r;i++) nr=(1LL*nr*i)%MOD;
    rasp=(1LL*rasp*nr)%MOD;
    nr=1;
    for(int i=1;i<=k-r;i++) nr=(1LL*nr*i)%MOD;
    rasp=(1LL*rasp*nr)%MOD;
    fout << rasp;
    return 0;
}