Create 2492.Minimum-Score-of-a-Path-Between-Two-Cities.cpp

Author: wisdompeak

Union_Find/2492.Minimum-Score-of-a-Path-Between-Two-Cities/2492.Minimum-Score-of-a-Path-Between-Two-Cities.cpp

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+class Solution { 
+ int Father[100005];
+ int FindFather(int x)
+ {
+ if (Father[x]!=x)
+ Father[x] = FindFather(Father[x]);
+ return Father[x];
+ }
+ 
+ void Union(int x, int y)
+ {
+ x = Father[x];
+ y = Father[y];
+ if (x<y) Father[y] = x;
+ else Father[x] = y;
+ } 
+ 
+public: 
+ int minScore(int n, vector<vector<int>>& roads) 
+ { 
+ for (int i=1; i<=n; i++)
+ Father[i] = i;
+ 
+ for (auto road: roads)
+ {
+ int a = road[0], b = road[1], d = road[2];
+ if (FindFather(a)!=FindFather(b))
+ Union(a,b); 
+ }
+ 
+ int ret = INT_MAX;
+ for (auto road: roads)
+ {
+ int a = road[0], b = road[1], d = road[2];
+ if (FindFather(a)==FindFather(1))
+ ret = min(ret, d);
+ }
+ 
+ return ret;
+ }
+};