fork download

copy

#define mem(a,b) memset(a,b,sizeof(a))
 
vector<int> adjList[100005];
int vis[100005], lev[100005];
int n,flag;
 
void bfs()
{
    mem(vis,0);
    mem(lev,63);
    queue<int> Q;
    Q.push(1);
    vis[1]=1;
    while(!Q.empty())
    {
        int u = Q.front();
        Q.pop();
        for(int i = 0; i < adjList[u].size(); i++)
        {
            int v = adjList[u][i];
            if(!vis[v])
            {
                Q.push(v);
                vis[v]=1;
                lev[v]=lev[u]+1;
            }
        }
    }
 
}

prog.cpp:3:1: error: ‘vector’ does not name a type
 vector<int> adjList[100005];
 ^~~~~~
prog.cpp: In function ‘void bfs()’:
prog.cpp:1:38: error: ‘memset’ was not declared in this scope
 #define mem(a,b) memset(a,b,sizeof(a))
                                      ^
prog.cpp:9:5: note: in expansion of macro ‘mem’
     mem(vis,0);
     ^~~
prog.cpp:11:5: error: ‘queue’ was not declared in this scope
     queue<int> Q;
     ^~~~~
prog.cpp:11:11: error: expected primary-expression before ‘int’
     queue<int> Q;
           ^~~
prog.cpp:12:5: error: ‘Q’ was not declared in this scope
     Q.push(1);
     ^
prog.cpp:18:28: error: ‘adj’ was not declared in this scope
         for(int i = 0; i < adj[u].size(); i++)
                            ^~~

Standard output is empty