View Compilation Error

0_0_37844824_1908.cpp:15:8: error: expected ';' at end of member declaration
  int l,r
        ^
0_0_37844824_1908.cpp: In function 'void dfs(int, int)':
0_0_37844824_1908.cpp:21:12: error: 'struct point' has no member named 'b'
  if(len[i].b!=f){
            ^
0_0_37844824_1908.cpp:22:16: error: 'struct point' has no member named 'b'
   int V=len[i].b;
                ^
0_0_37844824_1908.cpp: In function 'void add(int, int)':
0_0_37844824_1908.cpp:33:2: error: 'tot' was not declared in this scope
  tot++;
  ^
0_0_37844824_1908.cpp: In function 'int main()':
0_0_37844824_1908.cpp:47:33: error: 'memset' was not declared in this scope
   memset(dp[i], 0, sizeof(dp[i]));
                                 ^