Cod sursa(job #467911)

Utilizator AndreyPAndrei Poenaru AndreyP Data 1 iulie 2010 12:14:42
Problema Numerele lui Stirling Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.75 kb
#include <cstdio>
#define N 205
#define M 98999

int s[N][N],S[N][N];
inline void precalc()
{
    s[0][0]=1;
    S[1][1]=1;

    int n=200;
    for(int i=1; i<=n; ++i)
    {
        s[i][0]=((1-i)*s[i-1][0]) % M;
        for(int j=1; j<=n; ++j)
            s[i][j]= (s[i-1][j-1] - (i-1)*s[i-1][j]) % M;
    }

    for(int i=2; i<=n; ++i)
    {
        for(int j=1; j<=i; ++j)
            S[i][j]= (S[i-1][j]*j + S[i-1][j-1]) % M;
    }
}

int main()
{
    freopen("stirling.in","r",stdin);
    freopen("stirling.out","w",stdout);

    precalc();
    int T;
    int x,i,j;
    for(scanf("%d",&T); T; --T)
    {
        scanf("%d%d%d",&x,&i,&j);
        printf("%d\n", ( (x==1) ? (s[i][j]) : (S[i][j]) ) );
    }

    return 0;
}