View Compilation Error

0_0_38018911_30390.cpp: In function 'void dfs(int, int)':
0_0_38018911_30390.cpp:32:12: error: expected ';' before '==' token
  for(int i == 0; i < v[x].size(); i++){
            ^
0_0_38018911_30390.cpp:32:12: error: expected primary-expression before '==' token
0_0_38018911_30390.cpp:32:33: error: expected ')' before ';' token
  for(int i == 0; i < v[x].size(); i++){
                                 ^
0_0_38018911_30390.cpp:32:35: error: 'i' was not declared in this scope
  for(int i == 0; i < v[x].size(); i++){
                                   ^
0_0_38018911_30390.cpp: In function 'int main()':
0_0_38018911_30390.cpp:68:2: error: 'iso' has not been declared
  iso::sync_with_stdio(false);
  ^