Compilare: user.cpp: In function ‘void Read()’: user.cpp:17:9: warning: unused variable ‘val’ [-Wunused-variable] int val = 0, i = 1; ^ user.cpp:17:18: warning: unused variable ‘i’ [-Wunused-variable] int val = 0, i = 1; ^ user.cpp: In function ‘void Solve()’: user.cpp:65:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < Time[i].size(); j++) ^ user.cpp:73:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < Time2[i].size(); j++) ^