Compilare: user.cpp: In function ‘void Solve_2()’: user.cpp:84:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,l,ok=0; ^ user.cpp:84:13: warning: unused variable ‘l’ [-Wunused-variable] int i,j,l,ok=0; ^ user.cpp: In function ‘int main()’: user.cpp:97:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d %d",&N,&K,&S); ^ user.cpp:98:55: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(int i = 1; i <= N; ++i) fscanf(fin,"%d",&h[i]); ^