// http://algorithms.blog55.fc2.com/blog-entry-66.html

#include <stdio.h>
#include <string.h>

#define M 100

int N,R[M+1],C[M][M],B[M][M];

void compute(){
	int i=0,j,k,cost;
	memset(C,99,sizeof(C));
	for(;i<N;i++)C[i][i]=0;
	for(j=1;j<N;j++)
		for(i=0;i<N - j; i++ )
			for (k = i; k < i + j; k++ ){
				cost = C[i][k] + C[k+1][i+j] + R[i]*R[k+1]*R[i+j+1];
				if(cost<C[i][i+j])C[i][i+j]=cost,B[i][i+j]=k; 
			}
}

void order( int i, int j ){
	if(i==j)printf("M%d",i);
	else{
		printf("(");
		order( i, B[i][j]-1 ); order(B[i][j], j);
		printf(")");
	}
}

void input(){
	scanf("%d",&N);
	int z,i=0;
	for(;i<N;i++)scanf("%d%d",R+i,&z);
	R[i]=z;
}

void output(){
	printf("%d\n",C[0][N-1]);
	//order(0, N);
	//puts("");
}

main(){
	input();
	compute();
	output();
}
#include <stdio.h>
 
int main(){
 int n;
 scanf("%d",&n);
 while(n){
  int a=0,b=0,aa,bb;
  for(int i=n;i>0;i--){
   scanf("%d %d",&aa,&bb);
   if(aa>bb){
    a+=aa+bb;
   }else if(aa<bb){
    b+=aa+bb;
   }else{
    a+=aa;
    b+=bb;
   }
  }
  printf("%d %d\n",a,b);
  scanf("%d",&n);
 }
}