Cod sursa(job #2641118)

Utilizator ArkhamKnightyMarco Vraja ArkhamKnighty Data 10 august 2020 10:42:58
Problema Numerele lui Stirling Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.85 kb
#include <fstream>
#define N 205
#define MOD 98999
using namespace std;

ifstream cin("stirling.in");
ofstream cout("stirling.out");

int S[N][N], s[N][N], m;

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()
{
    int t, speta, n, m;

    cin >> t;

    precalculare_s();
    precalculare_S();

    for(int i = 1 ; i <= t ; i++)
    {
        cin >> speta >> n >> m;
        if(speta==1)
			cout << s[n][m] << '\n';

		if(speta==2)
			cout << S[n][m] << '\n';
    }
}