Cod sursa(job #2070249)

Utilizator LeVladzCiuperceanu Vlad LeVladz Data 19 noiembrie 2017 13:04:17
Problema 1-sir Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.44 kb
#include <fstream>
#define MOD 194767

using namespace std;

ifstream fin("1-sir.in");
ofstream fout("1-sir.out");

int n,s,i,j,d[3][33800];

int main()
{
    fin >> n >> s;
    ///D[N][S] = nr de 1-siruri cu N term care au suma elem S
    d[1][0] = 1;
    for (i=2; i<=n; i++)
        for (j=0; j<=(i-1)*i/2; j++)
            d[i%2][j] = (d[(i-1)%2][max(j+1-i, -j-1+i)]+d[(i-1)%2][j-1+i])%MOD;
    fout << d[n%2][s];
    return 0;
}