Compilare: main.cpp: In function 'int main()': main.cpp:43:33: warning: unused variable 'j' [-Wunused-variable] int i , conf , bit , elem , j , val , sol, f; ^ main.cpp:43:48: warning: unused variable 'f' [-Wunused-variable] int i , conf , bit , elem , j , val , sol, f; ^ main.cpp:44:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d",&n,&k); ^ main.cpp:46:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&v[i]); ^