Compilare: user.cpp: In function ‘void prt()’: user.cpp:60:13: warning: unused variable ‘fs’ [-Wunused-variable] int fi,fj,fs,lp; ^ user.cpp: In function ‘int main()’: user.cpp:87:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("lost.in","r",stdin); ^ user.cpp:88:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("lost.out","w",stdout); ^ user.cpp: In function ‘void prt()’: user.cpp:66:46: warning: ‘lp’ may be used uninitialized in this function [-Wmaybe-uninitialized] cout<<fixed<<setprecision(4)<<rz<<'\n'<<lp-1<<'\n'; ^ user.cpp:70:31: warning: ‘fj’ may be used uninitialized in this function [-Wmaybe-uninitialized] int pt=lpath[i][fi][fj][lp]; ^ user.cpp:70:31: warning: ‘fi’ may be used uninitialized in this function [-Wmaybe-uninitialized]