Compilare: main.cpp: In function 'void dfs(int)': main.cpp:38:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v1[x].size();i++) ~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:53:39: warning: format '%s' expects argument of type 'char*', but argument 5 has type 'char (*)[5]' [-Wformat=] fscanf(fin, "%d%d %s\n",&x,&y,&c); ^ main.cpp:68:39: warning: format '%s' expects argument of type 'char*', but argument 5 has type 'char (*)[5]' [-Wformat=] fscanf(fin, "%d%d %s\n",&x,&y,&c); ^ main.cpp:50:33: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d",&p,&n,&m); ^ main.cpp:53:40: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d %s\n",&x,&y,&c); ^ main.cpp:68:40: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d %s\n",&x,&y,&c); ^