Articulation Points

///Given a graph. Count the Articulation points
#include <bits/stdc++.h>
using namespace std;
int dis[110],point[110],c;//dis=vis
vector<int> adj[110];

int ArtPoint(int p,int u){
    if (dis[u]) return dis[u];
    int mn=dis[u]=c++,i;
    for (i=0; i<adj[u].size(); i++){
        int v=adj[u][i];
        if (v==p) continue;
        if (dis[v]) {mn=min(mn,dis[v]);continue;}
        int x=ArtPoint(u,v);
        if (x>=dis[u]) point[u]++;
        mn=min(mn,x);
    }
    return mn;
}
int main(){
    int n,e,u,v,i,j,f;
    for (i=0; i<110; i++) adj[i].clear();
    memset(dis,0,sizeof dis),
    memset(point,0,sizeof point);

    puts("Input how many node and edge:");
    scanf("%d %d",&n,&e);

    puts("Input the edges one by one:");
    for (i=0; i<e; i++){
        scanf("%d %d",&u,&v);
        adj[u].push_back(v);
        adj[v].push_back(u);
    }
    for (i=c=1; i<=n; i++) ///Finding Articulation Point
        if (!dis[i]){
            dis[i]=c++;
            for (j=f=0; j<adj[i].size(); j++)
                if (!dis[adj[i][j]])
                    f++, ArtPoint(i,adj[i][j]);
            if (f>1) point[i]=f;
        }
    puts("The Articulation poin(s) are:");
    for (i=1; i<=n; i++) if (point[i]) printf("%d ",i);
    return 0;
}