Compilare: main.cpp: In function 'void dfs(trie*)': main.cpp:42:19: 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:51:25: warning: format '%s' expects argument of type 'char*', but argument 3 has type 'char (*)[1000100]' [-Wformat=] fscanf(fin, "%s", &A); ^ main.cpp:54:29: warning: format '%s' expects argument of type 'char*', but argument 3 has type 'char (*)[10010]' [-Wformat=] fscanf(fin, "%s", &s); ^ main.cpp:51:26: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%s", &A); ^ main.cpp:52:26: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^ main.cpp:54:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%s", &s); ^