a53

CalculSume

a53
Jan 3rd, 2019
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  1. #include <fstream>
  2. #define MOD 9973
  3. #define N 101
  4. using namespace std;
  5. ifstream f("calculsume.in");
  6. ofstream g("calculsume.out");
  7. int n,k,a[N],S[N][N];
  8.  
  9. int main()
  10. {
  11. f>>n>>k;
  12. for(int i=1;i<=n;++i)
  13. f>>a[i];
  14. for(int i=0;i<=n;++i)
  15. S[i][0]=1;
  16. S[1][1]=a[1];
  17. for(int i=2;i<=n;++i)
  18. for(int j=1;j<=i;++j)
  19. S[i][j]=((a[i]*S[i-1][j-1])%MOD+S[i-1][j])%MOD;
  20. g<<S[n][k];
  21. return 0;
  22. }
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