Compilare: user.cpp: In function ‘int main()’: user.cpp:48:50: warning: unused variable ‘max1’ [-Wunused-variable] int min_st=INF,max_st=0,min_dr=INF,max_dr=0,max1=0,max2=0; ^ user.cpp:48:57: warning: unused variable ‘max2’ [-Wunused-variable] int min_st=INF,max_st=0,min_dr=INF,max_dr=0,max1=0,max2=0; ^ user.cpp:45:6: warning: unused variable ‘q’ [-Wunused-variable] int q,w,e,r,max=0,ci,cj,ck; ^ user.cpp:45:8: warning: unused variable ‘w’ [-Wunused-variable] int q,w,e,r,max=0,ci,cj,ck; ^ user.cpp:45:10: warning: unused variable ‘e’ [-Wunused-variable] int q,w,e,r,max=0,ci,cj,ck; ^ user.cpp:45:12: warning: unused variable ‘r’ [-Wunused-variable] int q,w,e,r,max=0,ci,cj,ck; ^ user.cpp:16:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("split.in","r",stdin); ^ user.cpp:17:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("split.out","w",stdout); ^ user.cpp:18:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:20:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v[i]); ^