Cod sursa(job #69129)

Utilizator gigi_becaliGigi Becali gigi_becali Data 1 iulie 2007 13:49:18
Problema 1-sir Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.65 kb
using namespace std;
#include <cstdio>
#define maxn 100
#define maxS (maxn*maxn/2)
#define mod 194767
#include <map>
int N, S;

map<int, map<int,int> > dp;


template <class T> T sgn(T a) { if(a>0) return a;return -a;}
int main()
{
	freopen("1-sir.in","r",stdin);
	scanf("%d %d\n", &N, &S);
	dp[1][1]=1;
	dp[1][-1]=1;
	//S=sgn(S);
	int i, j;
	for(i=2;i<=N;++i)
		for(j=0;j<=S;++j)
			dp[i][j]=dp[i-1][j-(i-1)]+dp[i-1][j+(i-1)],
			dp[i][j]%=mod;
		
		
	/*	for(i=0;i<=N;++i)
		{
			for(j=0;j<=S;++j) printf("%d ", dp[i][j]);
			printf("\n");
		}
	*/
		
	freopen("1-sir.out","w",stdout);
	printf("%d\n", sgn(dp[N-1][S]));
return 0;
}