Cod sursa(job #2052759)

Utilizator tanasaradutanasaradu tanasaradu Data 30 octombrie 2017 22:54:30
Problema Numerele lui Stirling Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.8 kb
#include <bits/stdc++.h>
using namespace std;
ifstream fin("stirling.in");
ofstream fout("stirling.out");
const short NMAX=205;
const int MODULO=98999;
int query,dp[NMAX][NMAX],DP[NMAX][NMAX];
int main()
{
    int t,n,k;
    fin>>query;
    ///Recurenta:S(n,k)=-(n-1)*S(n-1,k)+S(n-1,k-1)(De speta I)
    ///Recurenta:S(n,k)=S(n-1,k-1)+j*S(i-1,j)(De speta a II-a)
    dp[1][1]=DP[1][1]=1;
    for(int i=1;i<=NMAX-5;i++)
        for(int j=1;j<=NMAX-5;j++)
            if(i!=1 || j!=1)
    {
        dp[i][j]=(dp[i-1][j-1]-(1LL*(i-1)*dp[i-1][j])%MODULO)%MODULO;
        DP[i][j]=(DP[i-1][j-1]+(1LL*j*DP[i-1][j])%MODULO)%MODULO;
    }
    while(query--)
    {
        fin>>t>>n>>k;
        if(t==1)
            fout<<dp[n][k]<<"\n";
        else fout<<DP[n][k]<<"\n";
    }
    return 0;
}