Create 3108. Minimum Cost Walk in Weighted Graph (#746)

Author: Chayandas07

3108. Minimum Cost Walk in Weighted Graph

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+class Solution {
+    private:
+    int getcmpcost(int node, vector<vector<pair<int,int>>>&adj,vector<bool>&vis,vector<int>&cmp,int cid){
+        queue<int>q;
+        int ccost=INT_MAX;
+        q.push(node);
+        vis[node]=1;
+        while(!q.empty()){
+            int Node=q.front();
+            q.pop();
+            cmp[Node]=cid;
+            for(auto [nbr,w]:adj[Node]){
+                ccost&=w;
+                if(vis[nbr])continue;
+                vis[nbr]=1;
+                q.push(nbr);
+            }
+        }
+        return ccost;
+    }
+public:
+    vector<int> minimumCost(int n, vector<vector<int>>& edges, vector<vector<int>>& query) {
+        vector<vector<pair<int,int>>>adj(n);
+        for(auto ele:edges){
+            adj[ele[0]].push_back({ele[1],ele[2]});
+            adj[ele[1]].push_back({ele[0],ele[2]});
+        }
+        vector<bool>vis(n,0);
+        vector<int>cmp(n);
+        vector<int>cmpcost;
+        int cid=0;
+        for(int node=0;node<n;node++){
+            if(!vis[node]){
+                cmpcost.push_back(getcmpcost(node,adj,vis,cmp,cid));
+                cid++;
+            }
+        }
+        vector<int>ans;
+        for(auto q:query){
+            int s=q[0];
+            int e=q[1];
+            if(cmp[s]==cmp[e])ans.push_back(cmpcost[cmp[s]]);
+            else ans.push_back(-1);
+        }
+        return ans;
+    }
+};