Cod sursa(job #1496170)

Utilizator gapdanPopescu George gapdan Data 4 octombrie 2015 15:18:02
Problema 1-sir Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.47 kb
#include <cstdio>
#include <algorithm>
#define MOD 194767

using namespace std;

int n,s;
int d[2][50000];

int main()
{
    freopen("1-sir.in","r",stdin);
    freopen("1-sir.out","w",stdout);
    scanf("%d%d",&n,&s);
    d[1][0]=1;
    for(int i = 2; i <= n; ++i)
        for(int j = 0; j <= i * (i-1)/2; ++j)
        {
            d[i%2][j] = (d[(i+1)%2][abs(j-i+1)] + d[(i+1)%2][j+i-1]) % MOD;
        }
    printf("%d\n",d[(n)%2][abs(s)]);
    return 0;
}