Compilare: main.cpp: In function 'void desc(int)': main.cpp:15:12: warning: unused variable 'i' [-Wunused-variable] int d, i, j, maxim; ^ main.cpp:15:15: warning: unused variable 'j' [-Wunused-variable] int d, i, j, maxim; ^ main.cpp: In function 'int main()': main.cpp:73:15: warning: unused variable 'j' [-Wunused-variable] int n, i, j, a, maxim = 0, f; ^ main.cpp:86:31: warning: 'f' may be used uninitialized in this function [-Wmaybe-uninitialized] f = (long long)(f + max_val[i].second ) % MOD; ~~~^~~~~~~~~~~~~~~~~~~~~