View Compilation Error

0_0_14586841_9740.cpp:12:1: error: expected initializer before 'int'
 int cnt, n;
 ^
0_0_14586841_9740.cpp: In function 'void addedge(int, int, int)':
0_0_14586841_9740.cpp:23:10: error: 'cnt' was not declared in this scope
     edge[cnt] = Edge(u, v, val);
          ^
0_0_14586841_9740.cpp: In function 'void DFS(int, int, int)':
0_0_14586841_9740.cpp:33:9: error: 'dp' was not declared in this scope
         dp[val]++;
         ^
0_0_14586841_9740.cpp: In function 'void init()':
0_0_14586841_9740.cpp:44:12: error: 'dp' was not declared in this scope
     memset(dp, 0, sizeof(dp));
            ^
0_0_14586841_9740.cpp: In function 'int main()':
0_0_14586841_9740.cpp:54:22: error: 'n' was not declared in this scope
         scanf("%d", &n);
                      ^
0_0_14586841_9740.cpp:56:9: error: 'cnt' was not declared in this scope
         cnt = 0;
         ^
0_0_14586841_9740.cpp:72:24: error: 'dp' was not declared in this scope
                 ans += dp[temp];
                        ^