Cod sursa(job #3220721)

Utilizator Cazacu2006RazvanRazvan Cazacu Cazacu2006Razvan Data 4 aprilie 2024 18:11:06
Problema 1-sir Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.6 kb
#include <fstream>
#include <cmath>
#include <cstring>
#define mod 194767
using namespace std;
ifstream fin("1-sir.in");
ofstream fout("1-sir.out");
long long n,s,d[2][50000];
int main()
{
    fin>>n>>s;
    s=abs(s);
    if((n-1)*n<s)
    {
        fout<<0;
        return 0;
    }
   d[0][0]=1;
   int ind=1;
    for(int i=2;i<=n;i++,ind=1-ind)
    {
        memset(d[ind],0,sizeof(d[ind]));
        for(int k=0;k<=50000;k++)
        {

           d[ind][k]=(d[ind][k]+d[1-ind][abs(k-i+1)]+d[1-ind][abs(k+i-1)])%mod;
        }
    }
    fout<<d[1-ind][s]<<" ";


    return 0;
}