Compilare: main.cpp: In function 'void dfs(trie*)': main.cpp:40:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i < nod->v.size(); i++){ ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:47:25: warning: format '%s' expects argument of type 'char*', but argument 3 has type 'char (*)[1000001]' [-Wformat=] fscanf(fin, "%s", &A); ^ main.cpp:50:29: warning: format '%s' expects argument of type 'char*', but argument 3 has type 'char (*)[10001]' [-Wformat=] fscanf(fin, "%s", &s); ^ main.cpp:47:26: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%s", &A); ^ main.cpp:48:26: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^ main.cpp:50:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%s", &s); ^