Cod sursa(job #2587746)

Utilizator malakayMarius Andronie malakay Data 23 martie 2020 15:09:09
Problema Diamant Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.8 kb
#include <fstream>
#define mod 10000
#define M 44601
using namespace std;
int main()
{
    ios::sync_with_stdio(0);
    ifstream f("diamant.in");f.tie(0);
    ofstream g("diamant.out");g.tie(0);
    int n,m,x,mx,curr[2][2*M+5],v[20*20+1],a=0,t=0;
    f>>n>>m>>x;
    f.close();
    for(int i=1;i<=n;i++)
        for(int j=1;j<=m;j++)
            v[++t]=i*j;
    for(int i=0;i<2*M+5;i++)curr[0][i]=curr[1][i]=0;
    mx=1ll*(1ll*n*(1+n)/2)*(1ll*m*(1+m)/2);
    curr[a][M+0]=1;
    if(abs(x)>mx)
    {
        g<<0;
        g.close();
        return 0;
    }
    for(int i=1;i<=t;i++)
    {
        a^=1;
        for(int ac=M-mx;ac<=M+mx;ac++)
            curr[a][ac]=(curr[a^1][ac]+curr[a^1][ac-v[i]]+curr[a^1][ac+v[i]])%mod;
    }
    g<<curr[a][x+M];
    g.close();
    return 0;
}