Cod sursa(job #1212004)

Utilizator mihaimusatMihai Musat mihaimusat Data 23 iulie 2014 17:06:17
Problema 1-sir Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.47 kb
#include<fstream>
#define MOD 194767;

using namespace std;

int d[2][65540];

inline int abs(int x)
{return x>0?x:-x;}
int main()
{
    ifstream f("1-sir.in");
    ofstream g("1-sir.out");
    int n,S,s;
    f>>n>>s;
    S=n*(n-1)/2;
    if(s>S)
    {
        g<<"0"<<'\n';
    }
    d[1][0]=1;
    for(int i=2,l=0;i<=n;i++,l=1-l)
        for(int j=0;j<=S;j++)
            d[l][j]=(d[1-l][j+i-1]+d[1-l][abs(j-i+1)])%MOD;
    g<<d[n&1][s];
    return 0;
}