download:Go micro-service entry into container practice, landing observable micro-service e-commerce projects
For true microservice projects, service development is only the first step; containerization, elastic scaling, and observability are the real keys. This course will systematically learn the full form of micro-services and master the mature closed-loop landing scheme through the actual practice of e-commerce projects. Technical requirements Have practical experience in Go development, be familiar with Linux operation, and be familiar with MySQL environment parameters development language: Golang Development platform: Windows 10 Development tool: GoLand
! [] ()! []()“` 1 #include
2 using namespace std; 3 const int maxn=3e5+10; 4 const int mod=1e9+7; 5 #define ll long long 6 #define pi pair
7 #define fi first 8 #define sc second 9 #define pb push_back 10 int cnt[maxn][2]; 11 int a[maxn]; 12 vectorE[maxn]; 13 int ans,n; 14 int cntr,cntb; 15 16 void dfs(int u,int fa) 17 { 18 if(a[u]==1) cnt[u][1]++; 19 if(a[u]==2) cnt[u][0]++; 20 for(auto &v:E[u]) 21 { 22 if(v==fa) continue; 23 dfs(v,u); 24 cnt[u][0]+=cnt[v][0]; 25 cnt[u][1]+=cnt[v][1]; 26 if(cnt[v][1]==cntr&&cnt[v][0]==0) 27 ans++; 28 if(cnt[v][0]==cntb&&cnt[v][1]==0) 29 ans++; 30 } 31 } 32 33 34 int main() 35 { 36 ios::sync_with_stdio(0); 37 cin.tie(0); 38 cin>>n; 39 for(int i=1; i<=n; i++) cin>>a[i],cntr+=a[i]==1,cntb+=a[i]==2; 40 for(int i=1; i
>x>>y; 44 E[x].pb(y); 45 E[y].pb(x); 46} 47 if(CNTR &&cntb) 48 DFS (1,0); 49 else 50 ans=n-1; 51 cout<