Cod sursa(job #1124723)

Utilizator VladMSBonta vlad valentin VladMS Data 26 februarie 2014 13:30:22
Problema Numerele lui Stirling Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.91 kb
#include<cstdio>
using namespace std;
const int N=201,MOD=98999;

int t,n,m,speta,s[N][N],S[N][N];

void precalculare_s()
{
    s[1][1]= 1;
    for( int i=2 ; i<N ; ++i )//precalculam pana la limita maxima
        for( int j=1 ; j<=i ; ++j )//pentru j>i s(i,j)=0 pentru ca ciclurile au cel putin un element
            s[i][j]= ( s[i-1][j-1] - (i-1)*s[i-1][j] )%MOD ;
}

void precalculare_S()
{
    S[1][1]= 1;
    for( int i=2 ; i<N ; ++i )
        for( int j=1 ; j<=i ; ++j )
            S[i][j]= ( S[i-1][j-1] + j*S[i-1][j] )%MOD;
}

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

    precalculare_s();
    precalculare_S();

    scanf("%d",&t);

    while(t--)
    {
        scanf("%d%d%d",&speta,&n,&m);
        if(speta==1)
            printf("%d\n",s[n][m]);
        if(speta==2)
            printf("%d\n",S[n][m]);
    }

    return 0;
}