Compilare: user.cpp: In function ‘void solve()’: user.cpp:54:25: warning: unused variable ‘sumpart’ [-Wunused-variable] long long sumn = 0, sumpart; ^ user.cpp:38:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%lld", &n); ^ user.cpp:58:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%lld", &nr); ^ user.cpp:147:42: warning: array subscript is below array bounds [-Warray-bounds] rez = mxa(rez, (sum[ex] - sum[sxx - 1]) * mxnr(sxx, ex)); ^