catinatree.cpp: In function 'int main()':
catinatree.cpp:34:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
34 | for (i = 0 ; i < v[nod].size() ; i++){
| ~~^~~~~~~~~~~~~~~
catinatree.cpp:13:12: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
13 | fscanf (fin,"%d%d",&n,&d);
| ~~~~~~~^~~~~~~~~~~~~~~~~~
catinatree.cpp:15:16: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
15 | fscanf (fin,"%d",&x);
| ~~~~~~~^~~~~~~~~~~~~