Compilare: main.cpp: In function 'int main()': main.cpp:63:66: warning: 'lastmaxa' may be used uninitialized in this function [-Wmaybe-uninitialized] 63 | int lastmax=0, maxx=0, maxxa=0, firstmax=0, firstmaxa=0, lastmaxa; | ^~~~~~~~ main.cpp:58:25: warning: 'last1' may be used uninitialized in this function [-Wmaybe-uninitialized] 58 | for(int i=last1+1; i<=n; i++) fout << n << " " << i << "\n"; | ^