Compilare: main.cpp:3: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas] 3 | #pragma GCC optimization ("O3") | main.cpp:4: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas] 4 | #pragma GCC optimization ("unroll-loops") | main.cpp: In function 'int main()': main.cpp:14:11: warning: unused variable 'retin' [-Wunused-variable] 14 | int i,retin,maxi=-999999,j,cnt=0,val,con,t; | ^~~~~ main.cpp:14:38: warning: unused variable 'val' [-Wunused-variable] 14 | int i,retin,maxi=-999999,j,cnt=0,val,con,t; | ^~~