Cod sursa(job #813024)
#include <fstream>
#define minim(x, y) ((x)<(y)?(x):(y))
using namespace std;
ifstream fin("podm.in");
ofstream fout("podm.out");
long long int d[100], cmin[100][100], n, op[100];
//cmin[i][j] nr minim de inmultiri elementare necesare pt a inmulti matricile de la a[i] la a[j] d[i] marimea matricilor
void citire();
void pd();
int main()
{
citire();
pd();
return 0;
}
void citire()
{
int i;
fin>>n;
for(i=0; i<=n; i++) fin>>d[i];
}
void pd ()
{
long long int i, j, p, aux, k;
//initializare
for(i=1; i<=n; i++)
cmin[i][i]=0;
for(i=1; i<=n-1; i++)
cmin[i][i+1]=d[i-1]*d[i]*d[i+1];
for(p=2; p<=n-1; p++)
for(i=1; i<=n-p; i++)
{
j=i+p;
cmin[i][j]=cmin[i][i]+cmin[i+1][j]+d[i-1]*d[i]*d[j];
cmin[j][i]=i;
for(k=i+1; k<=j-1; k++)
{
aux=cmin[i][k]+cmin[k+1][j]+d[i-1]*d[k]*d[j];
cmin[i][j]=minim(cmin[i][j], aux );
}
}
fout<<cmin[1][n];
}