Compilare: main.cpp: In function 'void gen()': main.cpp:21:17: warning: unused variable 'k' [-Wunused-variable] 21 | int k=n*(i-1)+j+2; | ^ main.cpp: In function 'void sol()': main.cpp:82:32: warning: 'mij' may be used uninitialized [-Wmaybe-uninitialized] 82 | fout << mij << "\n"; | ^~~~ main.cpp:70:31: note: 'mij' was declared here 70 | int st=1,dr=n,mij; | ^~~ main.cpp:61:32: warning: 'mij' may be used uninitialized [-Wmaybe-uninitialized] 61 | fout << mij << "\n"; | ^~~~ main.cpp:50:31: note: 'mij' was declared here 50 | int st=1,dr=n,mij; | ^~~