Compilare: main.cpp: In function 'void dfs1(int, int)': main.cpp:28:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<v[nod].size();i++){ ~^~~~~~~~~~~~~~ main.cpp: In function 'void dfs2(int, int)': main.cpp:44:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<w[nod].size();i++){ ~^~~~~~~~~~~~~~ main.cpp: In function 'int cuplez(int, int, int)': main.cpp:62:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<w[y].size();i++){ ~^~~~~~~~~~~~ main.cpp:73:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<w[y].size();i++){ ~^~~~~~~~~~~~ main.cpp: In function 'int cuplaj(int, int)': main.cpp:91:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<v[x].size();i++){ ~^~~~~~~~~~~~ main.cpp:99:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<w[y].size();i++){ ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:138:25: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&t); ^ main.cpp:142:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&n); ^ main.cpp:148:38: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d",&x,&y); ^ main.cpp:154:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&m); ^ main.cpp:158:38: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d",&x,&y); ^