Cod sursa(job #2102857)

Utilizator PopeangaMihneaPopeanga Mihnea- Stefan PopeangaMihnea Data 9 ianuarie 2018 15:50:18
Problema 1-sir Scor 80
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.54 kb
#include <iostream>
#include <fstream>

using namespace std;

ifstream fin("1-sir.in");
ofstream fout("1-sir.out");

const int mod=194767;

int dp[200000];
int n, s;

int main()
{
    fin>>n>>s;
    int nr=n*(n-1)/2;
    if(s>nr || s<-nr)
    {
        fout<<"0\n";
        return 0;
    }
    dp[nr+100000]=1;
    for(int i=2; i<=n; ++i)
    {
        for(int j=-nr; j<=nr; ++j)
        {
            dp[j+100000]=(dp[j+100000]+dp[j+2*(n-i+1)+100000])%mod;
        }
    }
    fout<<dp[s+100000]<<"\n";
    return 0;
}