Cod sursa(job #2781858)
Utilizator | Gabriel Dascalescu Gabriel_Dascalescu | Data | 10 octombrie 2021 17:23:12 |
---|---|---|---|
Problema | Grigo | Scor | 100 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva de probleme | Marime | 0.49 kb |
#include <fstream>
#define nmax 100005
#define mod 1000003
using namespace std;
ifstream in("grigo.in");
ofstream out("grigo.out");
int n, m;
int v[nmax],poz[nmax];
long long prod=1;
int main()
{
in>>n>>m;
for(int i=1; i<=m; i++)
{
in>>v[i];
poz[v[i]]++;
}
for(int i=1; i<=n; i++)
{
if(poz[i]==0)
{
prod *= (i-1)%mod;
prod %=mod;
}
}
out<<prod%mod;
return 0;
}