#include <cstdio>#include <cstring>#include <cmath>#include <string>#include <iostream>#include <algorithm>#include <queue>using namespace std;#define rep(i, n) for(int i=0; i<(n); ++i)#define for1(i,a,n) for(int i=(a);i<=(n);++i)#define for2(i,a,n) for(int i=(a);i<(n);++i)#define for3(i,a,n) for(int i=(a);i>=(n);--i)#define for4(i,a,n) for(int i=(a);i>(n);--i)#define CC(i,a) memset(i,a,sizeof(i))#define read(a) a=getint()#define print(a) printf("%d", a)#define dbg(x) cout << (#x) << " = " << (x) << endl#define printarr2(a, b, c) for1(_, 1, b) { for1(__, 1, c) cout << a[_][__]; cout << endl; }#define printarr1(a, b) for1(_, 1, b) cout << a[_] << ‘\t‘; cout << endlinline const int getint() { int r=0, k=1; char c=getchar(); for(; c<‘0‘||c>‘9‘; c=getchar()) if(c==‘-‘) k=-1; for(; c>=‘0‘&&c<=‘9‘; c=getchar()) r=r*10+c-‘0‘; return k*r; }inline const int max(const int &a, const int &b) { return a>b?a:b; }inline const int min(const int &a, const int &b) { return a<b?a:b; }#define mkpii(a, b) make_pair<int, int> (a, b)const int N=305, oo=(~0u>>2)-10005;typedef pair<int, int> pii;int d[N][N], n, m, ihead[N], cnt, v[N], ans=oo, vis[N];struct ED { int next, to, w; }e[N*N<<1];priority_queue<pii, vector<pii>, greater<pii> > q;void add(int u, int v, int w) {	e[++cnt].next=ihead[u]; ihead[u]=cnt; e[cnt].to=v; e[cnt].w=w;	e[++cnt].next=ihead[v]; ihead[v]=cnt; e[cnt].to=u; e[cnt].w=w;}void dij(int s, int *d) {	for1(i, 1, n) d[i]=oo, vis[i]=0; int y;	while(!q.empty()) q.pop();	d[s]=0; q.push(mkpii(0, s));	while(!q.empty()) {		int x=q.top().second; q.pop();		if(vis[x]) continue; vis[x]=1;		for(int i=ihead[x]; i; i=e[i].next) if(d[y=e[i].to]>d[x]+e[i].w) {			d[y]=d[x]+e[i].w;			q.push(mkpii(d[y], y));		}	}}int main() {	read(n); read(m);	for1(i, 1, n) read(v[i]);	for1(i, 1, m) {		int u=getint(), v=getint(), w=getint();		add(u, v, w);	}	for1(i, 1, n) dij(i, d[i]);	read(m);	while(m--) {		int x=getint(), y=getint();		ans=oo;		for1(i, 1, n) ans=min(ans, d[i][x]+d[i][y]+v[i]);		if(ans==oo) ans=-1;		printf("%d\n", ans);	}	return 0;}

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