Compilare: main.cpp: In function 'int main()': main.cpp:7:36: warning: unused variable 'fn' [-Wunused-variable] int n,res=-2000000000,c=0,st=1,fn,x,start,fin; ^~ main.cpp:25:46: warning: 'fin' may be used uninitialized in this function [-Wmaybe-uninitialized] cout << res << " " << start << " " << fin; ^ main.cpp:25:36: warning: 'start' may be used uninitialized in this function [-Wmaybe-uninitialized] cout << res << " " << start << " " << fin; ^~~