Cod sursa(job #683108)

Utilizator BlaugranasEnal Gemaledin Blaugranas Data 19 februarie 2012 23:19:05
Problema Grigo Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.31 kb
Raporteaza aceasta sursa 
#include<cstdio>
#define N 100001
#define M 1000003
bool c[N];
int n,m,i;
long long b=1;
int main()
{FILE *f=fopen("grigo.in","r"),*g=fopen("grigo.out","w");
fscanf(f,"%d%d",&n,&m);
while(m--)
      fscanf(f,"%d",&i),c[i]=1;
for(i=2;i<=n;i++)
if(!c[i])
      b=(b*(i-1))%M;
fprintf(g,"%lld",b);
return 0;}