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Cod sursa(job #922897)
#include<fstream>
#include<algorithm>
using namespace std;
ifstream f("diamant.in");
ofstream g("diamant.out");
int X,M,N,s[2][90000],t[401],i,j;
int main()
{
f>>N>>M>>X;
if((X<-N*M*(M+1)*(N+1)/4)||(X>N*M*(M+1)*(N+1)/4)){g<<0<<"\n";return 0;}
for(i=1;i<=M*N;++i) t[i]=t[i-1]+2*((i-1)/M +1)*((i-1)%M+1);
X=X+N*M*(M+1)*(N+1)/4;
s[0][0]=s[0][1]=s[0][2]=1;
for(int i=2;i<=N*M;++i)
{
for(j=0;j<=min(t[i],X);++j)
{
s[1][j]=s[0][j];
if(j>=((i-1)/M +1)*((i-1)%M+1)) s[1][j]=(s[1][j]+s[0][j-((i-1)/M +1)*((i-1)%M+1)])%10000;
if(j>=2*((i-1)/M +1)*((i-1)%M+1)) s[1][j]=(s[1][j]+s[0][j-2*((i-1)/M +1)*((i-1)%M+1)])%10000;
}
for(j=0;j<=min(t[i],X);++j) s[0][j]=s[1][j];
}
g<<s[0][X];
return 0;
}