Cod sursa(job #394142)
Utilizator | Ivan Cristian cristik | Data | 10 februarie 2010 16:44:54 |
---|---|---|---|
Problema | Parantezare optima de matrici | Scor | 80 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.6 kb |
#include <stdio.h>
#define max 502
#define inf 0x3f3f3f3f
long long m[max][max],d[max];
int n,i,j,k,nr;
int main()
{
freopen("podm.in","r",stdin);
freopen("podm.out","w",stdout);
scanf("%lld",&n);
for(i=1; i<=n+1; i++) scanf("%lld",&d[i]);
for(nr=2; nr<=n; nr++)
for(i=1; i<=n-nr+1; i++)
{
j=i+nr-1;
m[i][j]=inf;
for(k=i; k<j; k++)
if(m[i][j]>m[i][k]+m[k+1][j]+d[i]*d[k+1]*d[j+1])
{
m[i][j]=m[i][k]+m[k+1][j]+d[i]*d[k+1]*d[j+1];
}
}
printf("%lld",m[1][n]);
return 0;
}