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Cod sursa(job #766720)
#include<fstream>
using namespace std;
ifstream f("diamant.in");
ofstream g("diamant.out");
int n,m,x,s,nr;
void back(int k)
{int l,c,i;
if(k==m*n+1)
{if(s==x)
++nr,nr%=10000;
}
else
{if(k%m==0)
l=k/m;
else
l=k/m+1;
if(k%m==0)
c=m;
else
c=k%m;
for(i=-1;i<=1;++i)
{s+=i*l*c;
back(k+1);
s-=i*l*c;
}
}
}
int main()
{f>>n>>m>>x;
back(1);
g<<nr<<'\n';
return 0;
}