#include #include using namespace std; using namespace atcoder; typedef long long int ll; typedef long double ld; typedef vector vi; typedef vector vl; typedef vector vvl; typedef vector vvvl; typedef vector vvvvl; typedef vector vb; typedef vector vvb; typedef vector vvvb; typedef vector vvvvb; typedef pair pl; typedef pair ppl; typedef pair pppl; typedef pair pppppl; #define rep(i,a,b) for(int i=(a);i<(b);i++) #define rrep(i,a,b) for(int i=(b)-1;i>=(a);i--) #define all(a) begin(a),end(a) #define sz(a) (int)(a).size() #define F first #define S second #define bs(A,x) binary_search(all(A),x) #define lb(A,x) (ll)(lower_bound(all(A),x)-A.begin()) #define ub(A,x) (ll)(upper_bound(all(A),x)-A.begin()) #define cou(A,x) (ll)(upper_bound(all(A),x)-lower_bound(all(A),x)) templateusing min_priority_queue=priority_queue,greater>; templatebool chmax(T&a,T b){if(abool chmin(T&a,T b){if(b vm; typedef vector vvm; typedef vector vvvm; typedef vector vvvvm; ostream&operator<<(ostream&os,mint a){os<>(istream&is,mint&a){int x;is>>x;a=mint(x);return is;} //*/ templateostream&operator<<(ostream&os,pairp){os<istream&operator>>(istream&is,pair&p){is>>p.F>>p.S;return is;} templateostream&operator<<(ostream&os,vectorv){rep(i,0,sz(v))os<istream&operator>>(istream&is,vector&v){for(T&in:v)is>>in;return is;} int main(){ cin.tie(0)->sync_with_stdio(0); cin.exceptions(cin.failbit); ll N,M;cin>>N>>M; vl P(N);cin>>P; vector>E(N+1); rep(i,0,M){ ll u,v,t;cin>>u>>v>>t;u--;v--; E[u].emplace_back(v,t); } rep(i,0,N)E[N].emplace_back(i,0); vl D(N+1,1e18); D[N]=0; min_priority_queueQ; Q.emplace(D[N],N); while(sz(Q)){ auto[d,v]=Q.top();Q.pop(); for(auto[u,t]:E[v])if(chmin(D[u],D[v]+t))Q.emplace(D[u],u); } rep(i,0,N)for(auto&[j,t]:E[i])t+=D[i]-D[j]; ll mi=1e18,cnt=0; rep(i,0,N){ vl DD(N,1e18); DD[i]=-D[i]; min_priority_queueQ; Q.emplace(DD[i],i); while(sz(Q)){ auto[d,v]=Q.top();Q.pop(); if(d!=DD[v])continue; for(auto[u,t]:E[v])if(chmin(DD[u],d+t))Q.emplace(DD[u],u); } rep(j,0,N)DD[j]+=D[j]+P[j]+P[i]; rep(j,0,N)if(i!=j){ if(mi>DD[j])mi=DD[j],cnt=1; else if(mi==DD[j])cnt++; } } cout<