#include <stdio.h>
#include <math.h>
#include <limits.h>
#include <stdlib.h>

typedef long long ll;
#define MAX_N 112233
#define REP(i, x, n) for(i = x; i < n; i++)
#define rep(i,n) REP(i,0,n)
#define INF 0x7FFFFFF
#define ALLOCA(type, n) ((type*)alloca(sizeof(type) * (n)))
#define MALLOC(type, n) ((type*)malloc(sizeof(type) * (n)))
#define CALLOC(type, n) ((type*)calloc((n), sizeof(type)))
#define REALLOC(type, n, p) ((type*)realloc((p), sizeof(type) * (n)))
#define MAX(a,b) a>b?a:b
#define MIN(a,b) a<b?a:b
typedef struct heap_queue{long *data;long size;}hq;
void heappush(hq *q,int data){long i = q->size;q->size++;while(i > 0){long p = (i - 1) / 2;if (q->data[p]<=data){break;}q->data[i] = q->data[p];i=p;}q->data[i] = data;}
long heappop(hq *q){long ret = q->data[0];q->size--;long data = q->data[q->size];long i = 0;while(i * 2 + 1 < q->size) {long a = i * 2 + 1, b = i * 2 + 2;if (b < q->size && q->data[b] < q->data[a]) {a=b;}if (q->data[a] >= data) {break;}q->data[i] = q->data[a];i=a;}q->data[i]=data;return ret;}

#define SORT(h, n) qsort(h, n, sizeof(h[0]), ASC)
#define RSORT(h, n) qsort(h, n, sizeof(h[0]), DESC)
int ASC(const void *c1,const void *c2){int tmp1=*(int *)c1;int tmp2=*(int *)c2;if(tmp1<tmp2){return -1;}if(tmp1==tmp2){return 0;}if(tmp1>tmp2){return 1;}}
int DESC(const void *c1,const void *c2){int tmp1 = *(int *)c1;int tmp2=*(int *)c2;if(tmp1>tmp2){return -1;}if(tmp1==tmp2){return  0;}if(tmp1<tmp2){return 1;}}
void Reverse(char *a, char *b, unsigned int n) {unsigned int i = 0;unsigned int d = n;while(d--) {b[d] = a[i++];}b[n] = '\0';}

int n, m, t[51], l[51][51] = {INF};
int main(void)
{
  int i,j,k;
  int a,b,c;
  int min;
  scanf("%d", &n);
  rep(i, n) scanf("%d", &t[i]);
  scanf("%d", &m);
  rep(i, 51) rep(j, 51) l[i][j] = INF;
  rep(i, m) {
    scanf("%d %d %d", &a, &b, &c);
    l[a][b] = c;
    l[b][a] = c;
  }
  rep(k, n) {
    rep(i, n) {
      rep(j, n) {
        l[i][j] = MIN(l[i][j], l[i][k] + l[k][j]);
      }
    }
  }
  min = INF;
  REP(i, 1, n - 1) {
    REP(j, 1, n - 1) {
      if(i != j) min = MIN(min, t[i] + t[j] + l[0][i] + l[i][j] + l[j][n - 1]);
    }
  }
  printf("%d\n", min);
  return 0;
}