Cod sursa(job #2428801)

Utilizator alcholistuStafie Ciprian Mihai alcholistu Data 6 iunie 2019 15:41:07
Problema 1-sir Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.57 kb

#include <bits/stdc++.h>



#define md 194767

#define Nmax 257



using namespace std;



ifstream fin("1-sir.in");

ofstream fout("1-sir.out");



int N, S;

int dp[2][Nmax * (Nmax - 1) / 2];



int main()

{

    fin >> N >> S;

    S = abs(S);

    dp[1][0] = 1;

    for(int i = 2; i <= N; i++)

        for(int j = 0; j <= i * (i - 1) / 2; j++)

            dp[i & 1][j] = (dp[1 - (i & 1)][min(j + i - 1, Nmax * (Nmax - 1) / 2 - 1)] + dp[1 - (i & 1)][abs(j - i + 1)]) % md;

    fout << dp[N & 1][S] << "\n";

    return 0;

}