View Compilation Error

0_0_30595024_21338.cpp: In function 'int dfs(int, int)':
0_0_30595024_21338.cpp:75:2: error: expected primary-expression before 'for'
  for(int i = 0; i < G[x].size(); i++) {
  ^
0_0_30595024_21338.cpp:75:17: error: 'i' was not declared in this scope
  for(int i = 0; i < G[x].size(); i++) {
                 ^
0_0_30595024_21338.cpp: In function 'int main()':
0_0_30595024_21338.cpp:89:7: error: too few arguments to function 'int dfs(int, int)'
  dfs(0);
       ^
0_0_30595024_21338.cpp:73:5: note: declared here
 int dfs(int x, int fa) {
     ^