Cod sursa(job #1293288)

Utilizator cojocarugabiReality cojocarugabi Data 15 decembrie 2014 18:25:06
Problema Grigo Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.32 kb
Raporteaza aceasta sursa 
# include <bits/stdc++.h>
using namespace std;
ifstream fi("grigo.in");
ofstream fo("grigo.out");
bitset < 100005 > b;
int main(void)
{
    int n,m,x;
    fi>>n>>m;
    while (m --) fi >> x,b[x] = 1;
    x=1;
    for (int i=1;i<=n;++i) if (!b[i]) x = (1LL * x * (i-1)) % 1000003;
    return fo << x << '\n',0;
}