Compilare: user.cpp: In function ‘void solve()’: user.cpp:68:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < ciup.size(); ++i) ^ user.cpp:64:12: warning: unused variable ‘sol’ [-Wunused-variable] long long sol = funct(1, 1, N, M); ^ user.cpp:65:13: warning: unused variable ‘s_1’ [-Wunused-variable] long long s_1, s_2; ^ user.cpp:65:18: warning: unused variable ‘s_2’ [-Wunused-variable] long long s_1, s_2; ^