Mai intai trebuie sa te autentifici.
Cod sursa(job #69120)
Utilizator | Data | 1 iulie 2007 13:39:23 | |
---|---|---|---|
Problema | 1-sir | Scor | 0 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.61 kb |
using namespace std;
#include <cstdio>
#define maxn 100
#define maxS (maxn*maxn/2)
#define mod 194767
int N, S;
int dp[maxn][maxS];
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;
int i, j;
for(i=2;i<=N;++i)
for(j=0;j<=S;++j)
dp[i][j]=dp[i-1][sgn(j-(i-1))]+dp[i-1][sgn(j+(i-1))],
dp[i][j]%=mod;
/*
for(i=1;i<=N;++i)
{
for(j=1;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;
}