Cod sursa(job #1828760)
Utilizator | Data | 13 decembrie 2016 20:51:56 | |
---|---|---|---|
Problema | Lista lui Andrei | Scor | 0 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.43 kb |
#include <fstream>
using namespace std;
ifstream cin("div3.in");
ofstream cout("div3.out");
int d[1001][3];
int main()
{
int n,m,i,j,p,c,k,s=0;
cin>>n>>p;
m=4001;
for(i=1;i<=n;i++)
{
cin>>c;
d[1][c%3]++;
}
for(i=2;i<=p;i++)
for(j=0;j<3;j++)
for(k=0;k<3;k++)
d[i][j]=(d[i][j]+d[i-1][k]*d[1][(j-k+3)%3])%m;
cout<<d[p][0];
return 0;
}