Compilare: user.cpp: In function ‘int main()’: user.cpp:31:8: warning: unused variable ‘start’ [-Wunused-variable] int start = interv.back().first, end = interv.back().second, max_end; ^ user.cpp:31:65: warning: variable ‘max_end’ set but not used [-Wunused-but-set-variable] int start = interv.back().first, end = interv.back().second, max_end; ^ user.cpp:21:12: warning: unused variable ‘sum’ [-Wunused-variable] int T, N, sum; ^